Mezzanine designs and builds digital technology solutions for customers across Africa and beyond in order to create productive societies. Founded in 2012, Mezzanine has market-leading expertise in the agricultural, health, financial inclusion and education spaces and works with mobile network operators to bring about positive change in the lives of people through the benefits of the digital dividend. Mezzanine is a home-grown African company delivering value to the people of Africa and beyond.
Mezzanine is a subsidiary of the Vodacom Group.
Looking for a senior engineer with Java 25 skills, PostgreSQL, git and more. Let's talk!
consistent.emu.ajdw@hidingmail.com
Transfyr is building physical AI for science.
Why is it that a professional athlete has dramatically more information about every play they make than a scientist has about the cause of any experimental failure? At Transfyr, we are building the infrastructure to make real-world scientific work legible, transferable, and reproducible.
Modern science is capable of extraordinary outcomes, but much of the most important insights never become explicit: how experiments are actually executed, protocols drift, how experts make gametime decisions on the fly, why experiments fail on Tuesdays. This tacit knowledge is rarely captured, making it difficult to reliably reproduce results, much less hand off protocols to new team members or collaborators. We believe our systematic failure to capture tacit knowledge is holding back the entire industry.
We’re building systems that operate directly in real laboratory environments to elucidate, capture, and interpret this missing information. Our platform records and analyzes multimodal data about how scientific work is performed and turns it into durable, operational knowledge. In doing so, we are also building the world’s largest commercial dataset on real-world scientific execution.
This foundation is critical not only for driving elite human performance today, but for enabling meaningful automation tomorrow. Physical AI systems cannot learn from outcomes alone; they require rich, grounded records of how work is actually done in the real world.
Key domains of expertise we’re looking for (hiring from entry level to senior leadership): - Computer Vision: take messy real-world images and video and make sense of them - AI / ML Research & Engineering: build the best digital brains to support the best physical brains on the planet - Full Stack Engineering: integrate our AI and data into tools that solve real customer problems.
A change from when I posted here previously: we are now focused on on-site in-person roles, at our lab/office in Cambridge, MA. And, we are particularly interested in DevOps/backend experience for the full stack role.
If you're interested, apply here! https://transfyr.ai/join-us
I am building a DevOps team at a capital markets tech company most people haven't heard of — but some of the world's biggest financial institutions run on our platform. 300B+ messages/day. 99.99% uptime. Mostly on-prem, Linux, purpose-built hardware.
You'd be working on systems support, tooling, and helping build a custom observability platform in Python — because off-the-shelf monitoring doesn't cut it at this scale.
Capital markets / FIX experience is a plus, not a requirement. Appetite for learning is.
The vibe: small global team (US/APAC/EMEA), fully async, deeply technical. Leadership still codes. No hand-holding, no fluff.
Mainly focused on US and EMEA hires (we currently have people clustered in Belfast and North Macedonia); for APAC, we have solid leads. We don't have salary expectations to publish. We are open to different engagements given regional and your personal factors, including contract, W-2, contract-to-hire, etc.
Senior IC role, report to me directly.
https://jobs.gusto.com/postings/deep-systems-llc-senior-devo...
Arcol (arcol.io) is a small, high talent density team building the future of building design - a future that's collaborative, fast, and intuitive. We're a web-native, fully collaborative 3d design tool modernizing the experience of architectural design for teams of all sizes.
We're looking for senior engineers with experience in modern web technologies - some of our key technical building blocks are Typescript, Rust, wasm, WebGL - and a strong ownership mindset. Experience with computational geometry, computer graphics, or similar a strong plus. This role sits at the intersection of solving deep technical foundational challenges with shipping a product that solves real problems for real people.
Reach out to me directly at thomas@arcol.io or peruse our careers page (https://www.arcol.io/careers) - we'd love to hear from you!
FUTO is an organization dedicated to developing, both through in-house engineering and investment, technologies that frustrate centralization and industry consolidation. Our work consists of a combination of in-house engineering projects, targeted investments, generous grants, and multi-media public education efforts. We are hiring for a few of our projects, Immich and Grayjay.
Immich is on a mission to provide a secure and private home for your most precious memories through our high-performance, self-hostable photo and video backup solution.
Grayjay is a privacy first media application that lets users follow creators, not platforms. The app aggregates content from multiple video sources including YouTube, Rumble, Twitch, PeerTube, Odysee, and more, into a single unified experience. Grayjay gives users full control over their viewing experience.
Roles currently available:
Mobile Developer - Immich : https://futo.tech/jobs/mobile-developer-immich
Android/iOS Mobile Engineer - Grayjay : https://futo.tech/jobs/mobile-engineer-grayjay
Plugin Engineer - Grayjay : https://futo.tech/jobs/plugin-engineer-grayjay
More details and job postings here: https://futo.tech/jobs
To apply, send your resume and cover letter to jobs at futo dot org.
Details and apply: https://www.docker.com/career-openings/
Smarkets runs one of the world’s most sophisticated prediction markets, handling over £29 billion in volume since 2010 and engaging 200,000+ traders globally. We’re a technology company that happens to revolutionise betting - from sports to political markets, to delivering the sharpest prices and the fairest odds.
We are currently looking for:
Software Engineer - Backend, Python, Rust - https://smarkets.com/job/aaaf901f-77c0-4b35-9240-ed4cfa668ba...
Senior Software Engineer - Backend, Distributed Systems, Rust - https://smarkets.com/job/41fba25f-0896-46d5-a093-8ebbc9e1624...
Staff Engineer - https://smarkets.com/job/134306ca-60bb-478f-9b6c-4844009a908...
Engineering Team Lead/Manager - https://smarkets.com/job/59c8a1d1-25b6-4350-840c-9eb370d1433...
Dev Ops Engineer - https://smarkets.com/job/99823479-fd3a-4720-8090-455394fb63f...
Senior Cloud Infrastructure Engineer - https://smarkets.com/job/7ee3a731-acc0-448f-bc61-64429e2ebf9...
Senior Data Analyst - https://smarkets.com/job/71030981-7f44-4ed5-90b7-98c326b85fb...
Level 12 is a software consulting and custom development agency. We have mid and senior level positions. Our job descriptions are written by developers for developers. No HR fluff here, we want you to know what you are really getting into:
https://www.level12.io/careers/
- We have a commitment to transparency and offer a "no surprises experience" throughout the interview and hiring process. We value candor...as evidenced by the length of our job description. :)
- Our CEO prefers the title CED, Chief Executive Developer. Engineering and operational concerns don't take a back seat when potential sales come to the front door.
- You will be working remote with a team that is all working remote and has been for years. Let's make the best use of our time by not commuting.
- We practice and preach sound development practices. You are likely to learn and grow as a developer while working here.
- You are committed to automated testing of all the software you write (our apps typically have 92%+ test coverage).
- We have a no-drama office policy. We value and cultivate enjoyable working relationships among team members. No jerks allowed!
- We emphasize work/life balance and adopt policies that make sure our people don't get burnt out. For instance, our PTO/Vacation policies are designed so that you actually use them.
- If you apply, we guarantee that we will give you a response, whether "yay" or "nay". No black holes here!
- Hiring status & updates: see my most recent post to our hiring google group. Also, subscribe there if you'd like to be updated in the future: https://groups.google.com/g/level12-hiring
Sesame believes in a future where computers are lifelike - with the ability to see, hear, and collaborate with us in ways that feel natural and human. With this vision, we're designing a new kind of computer, focused on making voice personal agents part of our daily lives. More details from Sequoia: https://www.sequoiacap.com/article/partnering-with-sesame-a-...
Our team brings together founders from Oculus and Ubiquity6, alongside proven leaders from Meta, Google, and Apple, with deep expertise spanning hardware and software.
Open Roles: https://jobs.ashbyhq.com/sesame
- ML Engineers
- Product Designers
- Product Managers
- iOS & Android Engineers
- ML Model Serving Engineer
- Embedded OS Architect
- Mechanical Engineer, Product Design
- Embedded Engineers
- Electrical Engineer
- Audio Systems Engineer
Senior Software Engineer: You'll own complex technical problems end-to-end—translating customer needs into scalable architecture, optimizing AI model efficiency through prompt engineering, and shipping features that directly impact how revenue teams operate. We want bold ideas and people who push boundaries.
Junior Software Engineer: You'll work across our stack (Python, FastAPI, Next.js, React) alongside senior engineers, contributing to real features from day one. Great fit if you're hungry to learn, ship fast, and grow with a startup building cutting-edge agentic systems.
New Grad Software Engineer: Entry point for recent grads excited about AI and agentic systems. You'll get hands-on experience with our modern data stack (Postgres, ElasticSearch, ClickHouse, DuckDB), Kubernetes/AWS deployment, and Temporal.io workflow orchestration while shipping production code.
This role is based in our Manhattan office (4 days/week in-person). Full health and dental coverage.
Apply: https://forms.gle/kEi5MDDiaJKdyN3fA or email maksym at withlantern.com with your resume.
We're hiring an AI Engineer to build and ship production AI systems -- not research prototypes.
You'll own our AI pipeline: RAG optimization, GPU model deployment on Trident architecture, production MLOps (training, inference, model lifecycle), and agentic AI systems. This is for engineers who ship code, not notebooks.
Stack: Python (primary), C++/Java/C#, Docker, CI/CD, GPU infrastructure, RAG, model fine-tuning/distillation.
3-10 years production AI experience. Full-time W2 only.
$175,000/year + Equity. San Francisco on-site.
Apply: saikumar@engineeringsquare.us (subject: "AI Engineer -- [Your Name]")
We make software landscapes understandable and explorable. Our canvas is zoom-to-code, and shows data on overlays from all of the git repos in your company. LLMs go through the codebase and extract the architecture.
We provide clarity when it's most needed: re-orgs, onboarding, explaining the tech stack at board meetings. Or just being stuck in your IDE and want to ask your team mate a question. We'd like to do to large org codebases what Figma did to design.
Comper needs someone that can build revolutionary UIs and go where no man has gone before. Our UI is the core of our product: a zoomable canvas that has all your code, documentation and diagrams on it. We have a long way ahead and need serious thinking to make sure we explain the software stack as simple as can be.
I'm the founder & CTO. We just raised a pre-seed and are now with 6 people. Find the vacancies on our site and send us an email.
About us: We provide access and visitor management platforms integrating a wide range of technologies. Backed by a large Swiss AG.
Hiring: Multiple roles; backend developer (Kotlin, PHP), frontend developer (Angular Typescript), app developer (React Native), support (1st/2nd level), testers (all roles on-site Munich only, 5 mins walk from Munich Ost).
Why join: Multiple technologies, room for growth, great offices near to the city centre and a growing dynamic team.
Contact: Please apply at jobs [at] any2any.co
We are a small team with a wide network, bringing ideas to market with a focus on simplicity and trust. Clients a mix of early-stage and enterprise. Seeking long-term collaboration with imaginative people who communicate well.
Teams are built around projects. At the moment, looking for the following:
- Experience in F&B logistics, pickup/transport/scheduling systems, price monitoring, banking integration, mobile shopping tools and redundancy for a neat client.
- Experience in local models/compliance/alignment at MA/PhD level for preventative medical AI client.
Otherwise, there's more in the pipeline so feel free to reach out now or in the future.
As a consultant, collaboration could be anything from periodic advisor to dedicated contributor.
As for technology, pragmatic - best tool for the job. Rough consensus and running code.
Based in NYC, with clients and team beyond the US. We've got a life to live.
Under wraps due to client, but otherwise transparent and operate in good faith.
Email in profile.
We're building a unified platform for credit and financial data to power financial inclusion globally. Our mission is to unlock economic opportunities for consumers historically excluded from traditional credit systems by transforming diverse data into actionable risk insights. We are YC company backed by investors from Canapi Ventures, Kleiner Perkins, General Catalyst, and Index Ventures
-> Hiring software engineers from Mid-Level to Staff
-> Tech stack: Node.js, React, TypeScript, Python, PostgreSQL, AWS
You'll work on enterprise-grade APIs, data integrations, advanced analytics, and seamless user experiences. We're looking for engineers who thrive in fast-paced environments and want to make a meaningful impact on financial inclusion.
Apply at https://job-boards.greenhouse.io/novacredit and mention HN.
I'm Alex, founder and CEO of River. I also wrote the first line of code and still ship PRs.
River is a client-first Bitcoin-only financial institution building the financial app people use every day to save in bitcoin and spend in dollars. We custody over 25,000 BTC, serve individuals and businesses across the U.S., and are profitable. We publish cryptographic proof of reserves monthly and our company financials annually.
Here's what our engineering team is working on:
- Real-time Bitcoin and USD payments, trading, and settlement on an Elixir monolith with a unified GraphQL API - Next-generation Bitcoin custody with quorum signing, key ceremonies, and geo-redundant infrastructure - Scaling our ML/AI systems (Python, PyTorch, XGBoost, LLMs) to automate operations and tackle fraud/risk - A ground-up React and React Native rewrite of our consumer app - Porting our Lightning Network infrastructure from Go into Elixir We're hiring: - Senior Software Engineer (React, Full-stack) | $150K-$220K - Staff Software Engineer (Elixir) | $200K-$250K - Staff Software Engineer (ML/AI) | $200K-$250K Apply at https://jobs.ashbyhq.com/river?utm_source=Zp9nJyqvd4 or email me at alex@river.com and mention HN.Location: BOSTON (Boston Common) or NYC (downtown) - hybrid in both locations; <<NO REMOTE>> Headcount: ~38 and growing Stack:React / Typescript / Python / GCP
Open Roles (all roles require a MINIMUM of 6 years of work experience): Fullstack Engineer * ML Infrastructure (Staff+) * ML Engineer * ML/Research Scientist (PhD's) * Security Engineer * ML Engineering Manager (Director level)
We Offer: * competitive base salary + equity + great health/medical benefits * unlimited PTO * collaborative engineering-first culture
Layer Health was founded in 2023 by leading ML researchers from MIT and Harvard Medical School. We've built (and are live with multiple large health systems/hospitals) an ML product that scalably synthesizes patient medical records. Our LLM-powered platform is solving patient chart review - it dramatically accelerates clinical registry abstraction in areas ranging from surgery and cardiology, to oncology. Our long term vision is for our AI layer to safely transform patient care and minimize unnecessary heartbreak. Layer Health’s diverse founding team brings expertise across machine learning, UI/UX, large language models, and medicine.
Email me at mike.hauschild@layerhealth.com for more info
We're a 4-person non-profit building OpenCouncil (https://opencouncil.gr), an AI platform that makes Greek municipal council meetings accessible to citizens. We take hours-long council sessions and turn them into searchable, per-topic video clips, SMS/email notifications, and speaker analytics.
We're live with 10 municipalities including Athens, and the project is open source: https://github.com/schemalabz/opencouncil
Stack: TypeScript, Next.js, React, PostgreSQL, Elasticsearch. Heavy use of LLMs for transcription, speaker ID, and turning unstructured PDFs/transcripts into structured data. We use Claude Code, Cursor, and similar tools daily.
Looking for: 2+ years experience, strong web dev skills, genuine interest in civic tech. Bonus if you're strong in either data engineering/LLM integration or frontend/UX. Must be based in (or willing to relocate to) Athens, fluent in Greek and English.
We offer up to 30% annual profit sharing, lunch on office days, and up to 3 days/week remote. Small team, high ownership, real impact.
Details & apply: https://schemalabs.gr/jobs/civic-tech-software-engineer
Adobe is hiring senior engineers to scale the Real-Time Customer Data Platform, which processes trillions of events to power real-time personalization for global brands. This is deep, low-latency distributed systems work - not typical enterprise app dev.
Location: San Jose, CA/New York, NY/ San Francisco, CA Type: Onsite- Hybrid work
We use: Java, Scala, Spring Boot, Kafka, Spark, Flink, Cosmos DB, Aerospike, FoundationDB, Delta Lake, K8s, Azure/AWS, Docker, OpenAI, Vector DBs.
Looking for: • 8+ years building large-scale distributed or streaming systems
• Strong backend skills (Java/Scala, concurrency, perf tuning)
• Experience with Kafka/Spark/Flink and cloud-native systems
Bonus: Martech/Adtech, identity resolution, or personalization experience.
For more details, email me at skatkar@adobe.com with "HN" in the subject
Apply here:https://careers.adobe.com/us/en/job/ADOBUSR160198EXTERNALENU...
We make robots that autonomously construct buildings. We are currently developing and manufacturing our autonomous bricklaying system in the beautiful centre of Amsterdam. And our robots are already earning real revenue operating on construction sites all over the Netherlands.
We're looking for experienced software engineers for many roles. You can help us solve problems like:
- Data sync and analytics queries across a fleet of robots (that can be offline for hours at a time)
- Modelling buildings in code and finding the right UI for operators to edit them
- Designing systems for robots to drive safely and fully autonomously around a building site
Check out the progress we've already made on Atrium, our operating system for robotics: https://www.monumental.co/atrium
We're rapidly scaling up operations and we need experienced engineers who can build the systems that manage all of that complexity. If you think that 'full-stack' could reasonably mean debugging firmware, mixing buckets of mortar _and_ writing React components, we are looking for you. Robotics experience not required!
By uniting applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production.
Apply Here: https://jobs.ashbyhq.com/baseten?utm_source=gkzEP29VD4 or email Jason.dupree@baseten.co
We are hiring for multiple core roles:
1. Solution Architect: You will partner closely with sales and customers to translate business needs into technical solutions, run technical discovery, and guide repeatable deployments and proofs of value for customers. This role is a great fit for entrepreneurial, customer-facing technical professionals who want a front-row view into how modern companies adopt AI at scale, and who enjoy working across technical discovery, solution design, demos, deployment scoping, and hands-on customer implementations, in close partnerships with Sales and Engineering
2. AI Solutions Engineer/Forward Deployed Engineer: You will partner directly with customers to architect, build, and deploy high-scale production AI applications on Baseten’s platform. You’ll own the journey with customers from initial exploration to production deployment. To be clear, this is a technical engineering role with hands-on coding and software dev that also includes aspects of product management, technical customer success and pre-sales solutions engineering mixed in. We’re language agnostic but strong Python and ML experience is a big plus.
3. Forward Deployed SRE: You will serve as the primary post-sales technical owner for our most strategic customers, ensuring smooth deployment, performance, and reliability of ML workloads in production. The role blends hands-on debugging, infrastructure expertise, AI model performance, and executive level customer facing ownership. We’re looking for deep Kubernetes and container orchestration experience along with a polished communication and executive level presence.
The Offer:
Compensation: Very competitive, we’re looking for folks with a breadth of experience
Equity: This is an opportunity to participate in the ownership of a fast-growing AI Infrastructure platform
Location: We are based out of San Francisco with offices in New York. We are also open to remote employees for these roles.
Process: If you’re interested, please apply here https://jobs.ashbyhq.com/baseten?utm_source=gkzEP29VD4 or email me direct at Jason.dupree@baseten.co
Conductor is an app for running a team of coding agents on your Mac, used by engineers at companies like Stripe, Vercel, and Notion. We're a team of four looking for exceptional software engineers and designers to help us build a new way of working with AIs.
BillionToOne builds molecular diagnostics that detect disease at the single-molecule level. Our prenatal test is the only non-invasive screen for both recessive conditions and aneuploidies from one blood draw. Our oncology platform finds 50%+ more cancer treatment options than standard testing. Over 1 million tests processed to date. Every line of code here has a patient on the other end of it.
Revenue grew from $0 to ~$300M in four years, guiding $415-430M for 2026. Publicly traded and GAAP profitable. You'll work alongside clinicians and computational biologists on genuinely hard problems: scaling genomic pipelines, building digital infrastructure for complex test results, and shipping systems where correctness isn't optional.
Hiring across software engineering:
- Senior Software Engineer, Digital Experiences (Oncology and Prenatal)
- Senior Software Engineer, Oncology
- Senior Software Engineer, Prenatal
- Senior AI Engineer
Stack: Python, Django, Postgres, React, TypeScript, AWS, Docker, Terraform, Kafka, CircleCI, Datadog. AI-assisted dev tools (Cursor, Copilot, Claude Code).
Benefits: Access to the latest AI tools and models with unlimited usage to help you do your best work, 100% paid medical on select plans, 16 weeks fully paid parental leave, 401(k) with 4% match, daily catered lunch, on-site gym. Forbes Best Startup Employers 2024 & 2025.
JustPark is the premier partner offering both B2B solutions for destinations and B2C services for drivers, giving us the best of both worlds. We simplify the entire parking experience. From venues and councils to private driveways, our platform makes it simple for drivers to find, book, and pay for parking, while empowering our operating partners to deliver exceptional parking experiences.
We're looking for a Lead Full Stack Engineer who drives technical excellence across JustPark's frontend and backend systems. This role combines architectural oversight, hands-on development, and technical leadership to deliver high-quality solutions that serve millions of users globally.
Techstack: React, JavaScript / Typescript, commercial experience with PHP & Laravel (or similar frameworks like Symfony)
Experience mentoring or technically leading engineers, with a desire to grow into a broader team leadership role
Benefits: free lunch on office days, up-to 38 days of holiday a year (inc. bank holidays), free O2 concert tickets, private medical insurance with Vitality, enhanced maternity & paternity leave & more
If interested apply directly via the job board: https://apply.workable.com/justpark/j/BA88383A13/
Please mention that your application is from Hacker News :)
We're looking forward to your application!
- Senior Backend Engineer | SF, Remote (North America) | Full-time | $170-225k + equity
- Account Exec | SF | Full-time | $120-350k + equity
- Growth Specialist | SF | Full-time | $105-137k + equity
We’re mission-driven capitalists: making life-saving drugs more accessible, and building a $200B+ company on the scale of Palantir or ServiceNow.
Traction: profitable and growing fast. Landing 7+ figure contracts to enterprise healthcare customers.
Team: built by exited founders, YC & MIT alum, ex-Tesla, ex-Google engineers.
Top investors: funded by elite Silicon Valley VCs who've backed unicorns like DoorDash, Lyft, and Mammoth Biosciences. And strategic healthcare investors with deep industry connections.
Outsized impact & opportunity: work at the intersection of agentic AI, healthcare transformation, and life-changing patient outcomes.
If you want to work on a team of A-player athletes, doing the best work of your career, and helping get life-saving drugs to the people who need them, apply here:
https://neonhealth.com/careers (and make sure to mention HN!)
I have dyslexia. I was one of the lucky ones. Diagnosed at eight, I got accommodations and support before things spiraled.
Most kids aren't so lucky. The path from initial concern to diagnosis can take years and cost families upward of $5,000. For many, it never comes at all. In one study, 50% of prisoners were found to be dyslexic, with 80% functionally illiterate. Behind every missed diagnosis is a kid who gets told they're lazy, when the reality is no one ever gave them the right test.
Marker Learning is building an AI-enhanced assessment platform that makes identifying learning differences faster, cheaper, and more equitable, especially for multilingual students who are routinely misidentified or overlooked. Imagine if every kid could be screened for learning differences as easily as they're screened for vision. That's what we're building.
This isn't a chatbot or a homework helper. We're a Series B company backed by Reach Capital, Andreessen Horowitz, and Primary, running a multi-million-dollar longitudinal study spanning K–12 and developing the psychometric engine behind it. We need engineers who are excited by that.
We're hiring a hands-on full-stack engineer (React, Node.js, TypeScript) to help build and scale the platform: adaptive testing infrastructure, AI-powered scoring scoring and data pipelines, and the systems that maintain clinical rigor at scale. High autonomy, lightweight process, fast-paced. 8–10+ years, ideally with 0-to-1 or early-stage experience. You'll work directly with psychometrics, product, and data science, and the engineering decisions you make now will define the platform for years.
Reach out directly with your resume and why you want this position to lucie@markerlearning.com. Make the subject "Lead Engineer Application (I am not a bot)".
Sienna Charles, an ultra luxury travel and lifestyle experiences company, is seeking a full time System Administrator & Support role for internal IT functions. You will help us manage our identity and access management systems, our 30+ cloud-based applications and our in-house tooling. You will take ownership of these systems with an eye towards simplification, automation, scaling and integrating them into seamlessly connected systems. You will help set the direction for our in-house administration interface and mobile app. You must be a problem solver who will articulate a vision for our technical infrastructure and set the technical direction for our company.
We're a small, globally distributed team, so we are looking for a self-motivated senior administrator who can identify and execute high value and high impact work.
You’ll be coordinating directly with the owner of the company - no bureaucracy or middlemen.
This role is open to remote work, but we also have office space available in NYC for on-site work (preferred).
Some parts of our stack: Okta, 1Password, Google Workspace Slack, Zendesk, HubSpot, Monday.com, Google Meet, Zapier, Loom, Fathom, BambooHR, Dropbox, Figma
Full job description: https://docs.google.com/document/d/1xyct1dSsMMTl1BdQg-1MXa2X... How to apply: https://forms.monday.com/forms/26e54f3009ba37ccfc6f6d7b5ddcf...
Uncountable accelerates R&D for industrial scientists across leading materials, chemicals, and life sciences organizations. With our SaaS solution, our customers get better products to the market in half the time. Uncountable was founded by MIT and Stanford engineers and has been profitable since 2016. Our team has grown from 50 to 150 over the last two years.
Full-Stack Engineers | $130k - $220k + Equity
---> Uncountable is looking for engineers who can spearhead the development of the Uncountable Web Platform. The position is heavily product-driven and comes with challenges across the stack.
LLM Applications Engineers | $130k - $220k + Equity
---> Uncountable is looking for LLM applications engineers who can push the Uncountable data model forward through LLM-native UI's and application extensions.
--> Summer internships and working student positions are also available.
Learn more: https://www.uncountable.com/hiring/hn
Uncountable is hiring in New York City, San Francisco, London, and Munich.
Contact our CTO directly at jason@uncountable.com
What sucked the last time you rented a house or flat? Come and fix it.
OpenRent is a force for good in an industry tarnished by rip-off agencies. Enabled by an unrelenting focus on technology, we let more properties than any agency in the UK. In the last 12m we let over £50 billion worth of property, to over 8 million registered users, without ever charging any admin fees.
You'll be working on solving every aspect of the rental journey, from models to predict the right price of a property, to building the future of property management, all to help tenants find their dream home, and landlords their ideal tenant.
We're VC backed, profitable, and have plenty of ambition to maintain our fast growth in this absolutely massive market.
Roles currently available:
- Lead Product Designer | Equity | 110k+ (based on experience) + quarterly bonus
- Senior Full-Stack Engineer | Equity | 75k-110k+ (based on experience) + quarterly bonus
All roles visible here: https://www.openrent.co.uk/jobs
Category Labs (formerly known as Monad Labs) is a team of systems engineers and researchers on a mission to design and build at the frontier of decentralized technology. We strive to design and build step-function improvements over existing blockchain solutions. After raising $225M in series A funding, led by Paradigm, we are growing our team.
Technical Program Manager: https://jobs.ashbyhq.com/category-labs/bdfe89a6-83f6-4ab3-b6...
Senior SWE, Compiler: https://jobs.ashbyhq.com/category-labs/e5c34899-cea1-4d25-be...
Building a dynamic runtime on top of the Linux BPF sub-system. Looking for extremely talented / passionate Rust developers / Backend Engineers with a deep interest in Linux internals, Distributed Systems, Dev Tools, Great Developer Experiences and Systems programming.
Experience working with distributed systems AND / OR writing highly-concurrent, performant multi-threaded Rust is a must.
Feel free to tell us all about your favorite GNU core utilities / Linux system calls / kernel sub-systems at: work [at] yeet.cx
You can visit us at https://yeet.cx/
Or try our interactive sandbox at https://yeet.cx/play
For more jobs check out https://yeet.cx/careers
Flux developed the first AI Hardware Engineer integrated into a browser-based EDA, where hardware engineers can collaborate live and design hardware together from around the world. Our goal is to democratize the ability to create bleeding edge hardware, and revolutionize how electronics are designed and built.
Our agent isn’t an AI “assistant” bolted onto a legacy CAD tool. It’s built deeply into the system: you give it a job, it proposes a plan, explains decisions, and executes real workflows inside the editor: selecting parts, generating schematics, placing and routing with awareness of constraints, and running checks along the way. It works transparently, seeks feedback, and gets better over time by learning its user’s standards and preferences.
Tech Stack: [TypeScript, React, Node.js, Rust]
-- SENIOR PLATFORM ENGINEER -- Build and maintain user-facing platform features, write TypeScript/Node backend services and React frontend components, and more. Requirements: experienced in shipping production full-stack web apps, integrating and maintaining 3rd party APIs, debugging, cloud hosting [...]
-- SENIOR PRODUCT ENGINEER, FRONT END -- Define and evolve the frontend architecture of a large-scale, real-time browser-based engineering tool, and more. Requirements: React/TypeScript, shipping and iterating on complex interactive web applications, passion for UX [...]
-- SENIOR SOFTWARE ENGINEER, AGENTIC PRODUCTS -- Develop agentic reasoning capabilities, Integrate AI behaviors, perform Instrument telemetry and logging, and more. Requirements: [e.g., experienced with Generative-AI or agentic systems, integrating LLM-based systems, and you have built asynchronous distributed systems in production [...]
-- SENIOR DEVOPS ENGINEER -- You will improve the reliability, availability, and operational health of production systems, and more. Requirements: [e.g., operating and scaling production systems with uptime and latency goals, using observability stacks, defining SLOs/SLIs [...]
Benefits include comprehensive Medical, Dental, Vision, 401(k), and Stock Options so you have true ownership in what we build.
To apply, please email bryan.houser@flux.ai with your resume and mention HN, or apply directly here: https://jobs.ashbyhq.com/flux
Electric Twin builds simulations of real customer audiences, so teams can test decisions before shipping them — fast, safely, and at scale. We just raised $14 million and are growing rapidly.
We’re a small, team backed by top investors and operators, working with real clients on real problems. We’re hiring engineers (and other roles) who want high ownership, meaningful impact, and to help shape both the product and the company as we grow.
https://app.welcometothejungle.com/companies/Electric-Twin
Feel free to reach out directly if you'd like to know more: https://www.linkedin.com/in/smithharryh/
We’re building a web-based application for architects that speeds up their design workflow and makes high-quality visualization accessible to a wider audience.
We have experienced rapid growth in recent months and we are hiring to further scale the company. We have customers in over 120 different countries, who collectively have generated over 6 million visualizations on our platform since 2023.
* Flexible work hours
* Flexible home-office arrangement
* 5 weeks vacation
About the company:
• Technical founding team with relevant industry experience (part of Nvidia Inception Program)
• Backed by well-known European VCs (SpeedInvest + Galion.exe)
• Building anomaly detection and agentic evaluation on top of AI agent observability stack (Otel Native)
Ideal candidate:
Experience in open telemetry and observability. Preferably in a cloud native startup environment and excited to help product teams achieve maximum developer velocity with best-in-class DX and dev tooling. Bonus if you are an ex-founder.
Reach out to the founder directly: https://www.linkedin.com/in/rhommes/ or visit our website https://moyai.ai
I'm the founder of Normcore.io, an autoscaling game server hosting service and Unity plugin that includes all of the pieces you need to create a multiplayer game. We launched a few years ago and have hosted over 1 billion multiplayer games since launch. I'm actively scaling the team to keep up with the scale of our systems.
We’re all ex-Unity/Google folks working on making great SDKs and tools for multiplayer game development. We also make our own VR titles that are built on top of our own networking tech: https://www.youtube.com/watch?v=djsPTbs7R_w
Reasons you’d love working with us:
* Work with a small, focused, and extremely talented team of developers.
* Fully remote job with flexible working hours and vacation (Our whole team is remote too)
* High-quality codebase, code reviews, tests.
* High work satisfaction, own entire features, and work on an SDK that’s already used by 100,000+ developers.
If you're interested, please send me an email to careers@normalvr.com with your LinkedIn and a few sentences about why you would be a good fit for the role.
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Normcore.io | Head of Strategic Finance (SWE role) | Full-time | $100-140K USD | Remote PT/ET Hours
I'm the founder of Normcore.io, an autoscaling game server hosting service and Unity plugin that includes all of the pieces you need to create a multiplayer game. We launched a few years ago and have hosted over 1 billion multiplayer games since launch. We also make our own VR titles that are built on top of our own networking tech: https://www.youtube.com/watch?v=djsPTbs7R_w
I'm looking for a software engineer to be our head of Strategic Finance. In addition to modeling our revenue streams in Excel/Sheets, we make heavy use of Claude Code to create tools to track popular titles, store charts, basically any data we can use to understand the gaming market. We then use that data to determine the direction for the company.
Reasons you’d love working with us:
* Work with a small, focused, and extremely talented team of developers.
* Fully remote job with flexible working hours and vacation (Our whole team is remote too)
* High-quality codebase, code reviews, tests.
* High work satisfaction, own entire features, and work on an SDK that’s already used by 100,000+ developers.
If you're interested, please send me an email to careers@normalvr.com with your LinkedIn and a few sentences about why you would be a good fit for the role.
We operate at a larger scale than typical startups. We operate two datacenters with high performance servers we've built that are capable of dealing with the volumes of data we process. We've implemented our own distributed file system. We do full-scale web crawls. We download and perform static analysis on the entire universe of Android APKs and iOS IPAs that are published. Unlike a typical startup where you'll spend half of your time in meetings, and the other half fixing bugs from Jira tickets— at MixRank you'll get to challenge yourself with difficult technical problems that will help you to grow as an individual.
We're hiring continuously for the positions below— they aren't singular positions that will close once filled. Our philosophy on hiring is that the candidate is more important than the position. For each new member of the team, we design a custom role and responsibilities that are specialized to their interests. Other companies will come up with a long list of specific requirements for a position with the expectation that you'll exactly replace someone from the team, or that you'll be the perfect tetris piece that satisfies the job requirements decided by a committee. MixRank is more pragmatic: we'll first get excited about having a unique individual on the team, then we'll figure out the best way to accommodate their specific talents.
-- Junior Software Engineer - Remote (Global), Full-Time
We're looking for remote junior engineers that have 0-3 years of professional experience in software, and 5+ years of curiosity exploring computers, programming, and technical hobby projects. This is an open-ended entry role with mentorship and diverse opportunities to work on all areas of our product: databases, distributed systems, infrastructure and tooling, data analysis, machine learning, frontend/backend web development, APIs, data mining, data modeling, and more. To stand out, please highlight what makes you unique: passion for computing, curiosity and side projects, work ethic, niche research, etc.
Ideally you've already graduated, but if you still have one or more years left of school, please feel free to apply anyway, and if you're the right fit for the team we'll figure out a way to accommodate your schedule. https://www.ycombinator.com/companies/mixrank/jobs/Fnwsojk-j... --
Software Engineer - Remote (Global), Full-Time
We're hiring generalist software engineers to work on web applications, data mining, machine learning/data science, data transformation/ETL, data modeling, database scaling, infrastructure, devops, and more. We'll cater the role to whatever subset of these areas match your interests.
Beneficial experience includes PostgreSQL, Python, Rust, Linux, TypeScript, Nix, frontend/backend web development, and data mining.
https://www.ycombinator.com/companies/mixrank/jobs/RXQspen-s...
--
I’m Kiran, Chief of Staff (CoS) at MixRank, a fully remote data startup building go-to-market intelligence. We’re US-incorporated but hire globally, and we’re bringing on new teammates to join a fast-moving team with real ownership and impact.
Tables power every clinical trial, financial model, and scientific experiment, but deep learning has mostly ignored them. No natural sequence, no spatial structure, no shared vocabulary across datasets. LLM architectures don't transfer. We built TabPFN, the first foundation model that actually understands tabular data (published in Nature, 3M+ downloads, new SOTA for tabular ML). The hardest problems are still open.
The model is half the product. The other half - training infrastructure, real-time serving, developer platform, reliability - is what turns a research breakthrough into something enterprises trust in production. We're hiring across both.
ML Engineer, Cloud Platform — Design and scale the core infrastructure for serving and finetuning foundation models in production. Early enough that you're making the architecture decisions, not inheriting them.
ML Engineer, Training Infrastructure — Own GPU infrastructure, distributed training performance, and the developer productivity layer (CI, experiment tracking, model registry) that keeps research moving fast.
Full Stack Engineer, ML Platform — Build the product that puts tabular foundation models in users' hands, from data upload through inference and results. You'll work across frontend, backend, and directly with the research team to turn new model capabilities into production features.
Research Engineer, Foundation Model — Design experiments, run ablations, build training infrastructure, contribute to papers. Research engineers here aren't supporting scientists — they are the science team.
Also hiring: Research Scientist, Applied Scientist, Forward Deployed ML Engineer, Developer Relations Engineer, AE, BDR.
20-person team selected from thousands applicants. Backgrounds from Jane Street, Google, CERN, G-Research. Led by Frank Hutter, advised by Yann LeCun and Bernhard Schölkopf. With backing from Balderton, XTX Ventures and leaders at Hugging Face, DeepMind, and Black Forest Labs. Comp competitive with top AI labs, meaningful equity.
Apply at: https://jobs.priorlabs.ai
YCharts is an investment research platform that financial advisors and asset managers use to make smarter investing decisions and create visuals that effectively communicate their strategies.
We’re looking for a mid-level or senior engineer to join our AI engineering team. Our team is primarily focused on building AI agents for investment research, financial data visualization, and advisor meeting preparation.
Our stack includes FastAPI, Django, Angular, Valkey, Pinecone, MySQL, and models from OpenAI and Anthropic.
If you're interested, email me at cbrady at ycharts dot com or apply here: https://recruiting.paylocity.com/recruiting/jobs/Details/370...
THE MOST IMPORTANT UNSOLVED PROBLEM IN AI IS THE MOST POWERFUL OF ALL CAPABILITIES: ALIGNMENT.
Hi, I'm Emmett. You may know me as the founder of Twitch (YC S05), and as the (extremely) interim CEO of OpenAI.
I believe the question of how AI systems learn to understand themselves and others is one of the most consequential technical problems of our time. If we get it right, the agents we build today will become our friends and collaborators tomorrow. And the infrastructure required to train agents that are good at working in teams and societies will be extraordinarily valuable.
Softmax is building large-scale multi-agent, multi-policy environments that will benchmark AI agents – both our own and others – on their capacity for theory of mind, adaptive goal setting, and teamwork. We’re looking for the engineers who will make that possible.
The work is unusually hard. The problems are ambiguous and challenging. High autonomy, high expectations. You'll work directly with me and the rest of our small but mighty team.
If this sounds exciting, I’m looking forward to meeting you. E
——————————————————— Hiring: Software Engineer https://softmax.com/jobs/softwareengineer Mention “HN Who’s Hiring” in the "How did you hear about this” field ———————————————————
Role: Fully own our engineering and infrastructure teams, keep FetLife fast and reliable for over 12 million members, and free the rest of the leadership team to focus on product and growth.
How to Apply: Email jointheteam+hoei+hn@fetlife.com with a brief introduction, tell us about the impact you have personally made on an engineering or infrastructure team you have led, and LinkedIn or resume (PDF).
--- FetLife | Senior DevOps Engineer | Full-Time | Remote | 115k - 180k USD - https://fetlife.com/jobs/devops-engineer
Role: Develop and implement infrastructure upgrades, database tuning, Kubernetes and Helm orchestration, monitoring, and security. Help maintain and improve our large-scale Rails monolith, including CI/CD. Participate in on-call rotation and help automate daily DevOps tasks.
How to apply: Email jointheteam+do+hn@fetlife.com with a brief introduction, 2–3 favorite projects, GitHub/GitLab link, and LinkedIn profile or resume (PDF).
---
Stack: MySQL/PostgreSQL, ScyllaDB, Redis, ElasticSearch, Terraform, Google Cloud, DataDog and more.
Applications: Rails, Vue.js/Typescript, Rust
Perks: Paid time off (2 weeks vacation, 5 statutory holidays, 2 weeks at Christmas, 4-day summer workweeks), annual company retreat, anniversary gift ($200/year), monthly music subscription reimbursement, fully paid maternity & paternity leave.
We're building Cursor for sales - an AI assistant doubling sales productivity by handling prospecting, CRM updates, meeting prep, and follow-ups.
Backed by founders & operators @ Lovable, OpenAI, Neo4j, Creandum. Pre-seed. Shipping fast.
What you’ll do:
- Own UI/UX of an AI sales assistant end-to-end: research, design & final code
- Develop fast, accessible, and delightful to use pixel perfect interfaces across web, mobile & desktop
- Ship fast, test ideas with users & use data to kill your darlings
Current stack: React, TypeScript, Tailwind
Comp: Competitive base + meaningful early equity (flexible structure)
Apply: hello@spiich.ai — LinkedIn, GitHub/portfolio, why Spiich, and your proudest shipped work.
PostHog equips developers to build successful products by combining product analytics, feature flags, session replay, a data warehouse, CDP and many more.
* we have a public handbook (posthog.com/handbook) if you want to learn how we work, pay and more in complete detail.
* we are growing through more autonomy and transparency not through process.
* we have a ton of scale and a bunch of super interesting technical problems to solve
* we're building 20 more products over the next couple of years, so you could end up building one of those
* public compensation calculator! see immediately what you'd get paid
* we're hiring: product engineers, clickhouse operations engineer, incident response engineer, product managers, technical account managers and technical customer success managers.
If you or a loved one has ever suffered from confusing/egregious medical bills or insurance communications, this is your chance to give the power back to others in a similar situation.
Our mission is to demystify health insurance, healthcare and medical billing. By utilizing cutting-edge technology and advanced data analytics, we deliver personalized recommendations on how to save money, maximize use of plan benefits, stay on top of reimbursements and avoid erroneous or inflated medical bills.
Currently open roles:
- Software Engineer, Fullstack ($140-190k + equity)
- Software Engineer, Browser Automation ($140-190k + equity)
- Software Engineer, Backend/Data ($140-190k + equity)
- Product Manager, Data ($140-190k + equity)
- Customer and Operations Success Associate ($60-90k + equity)
- Sales/BDR (variable comp + equity)
Drop us an email to hn ~at~ sheerhealth.com if these sound interesting!
PrairieLearn (https://www.prairielearn.com) is an open-source assessment platform used by universities across the US (Berkeley, Princeton, Michigan, Illinois, and others). We power mastery-based learning and large-scale exams.
We’re a small, profitable, early-stage company (bootstrapped, no VC) that is growing quickly. Our users love us and we have very high retention and rapid spread through word of mouth. As an early-stage hire, you’ll work across the stack and enjoy meaningful ownership from day one.
Tech we use: Node.js / TypeScript backend, Postgres, AWS, React. We’re also developing AI tooling, including LLM agents to help instructors create content, and vision-language models to help grade student work. PrairieLearn is open core: https://github.com/PrairieLearn/PrairieLearn
Details:
- Location: Remote (US only)
- Salary: $100k-$140k depending on experience
- Benefits: Stock options (0.5% - 1.5%), unlimited PTO, flexible hours
- Role: Full-time. (We’re not able to sponsor visas at this time.)
Apply at https://www.prairielearn.com/jobs-ashby?ashby_jid=ee6fdbc3-1...
Temporal offers an entirely new way to build scalable and reliable applications. Temporal enables developers to focus on writing important business logic, and not on managing state or worrying about the underlying infrastructure. Backed by top VC firms, we have built a team of professionals from various successful start-ups and well-known technology companies.
We're looking for senior level engineers for multiple roles - https://www.temporal.io/careers
FEATURED ROLES:
Staff Software Engineer - Cloud Capacity → https://grnh.se/a0hc6o6h7us
Senior Staff SWE, Cloud Proxy → https://grnh.se/5lz30bcx7us
Senior software Engineer, Front End →https://grnh.se/f0i314os7us
Staff Software Engineer, DevProd (Observability) → https://grnh.se/e2cuv6xz7us
US benefits include: Unlimited PTO, 12 Holidays + 2 Floating Holidays, 100% Premiums Coverage for Medical, Dental, and Vision, AD&D, LT & ST Disability and Life Insurance , Empower 401K Plan, Additional Perks for Learning & Development, Lifestyle Spending, In-Home Office Setup, Professional Memberships, WFH Meals, Internet Stipend and more! Benefits outside the United States vary by country.
At UbiOps (https://ubiops.com), we make a platform to deploy AI and other workloads on any infrastructure. Our software is deployed in a broad range of environments: on premises hardware, public clouds and everything in between. We work for governments, enterprises and other critical organizations.
We are well funded and expanding, and currently looking for junior/medior engineers. Tech stack: Python, React, Kubernetes and Helm. We are currently focused on making our on-premise installations more generic and secure.
See https://ubiops.jobs.personio.com for our open positions. For the junior/medior position we offer €45.000 - € 70.000 per year depending on role and experience, alongside stock options, performance based bonuses and generous cost compensation. If you apply, mention HN in your application! :)
1. Senior Platform Engineer | 160k - 200k Base salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802989007
2. Senior Software Engineer | 160k - 200k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802854007
3. Software Engineer | 120k - 160k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802768007
4. Staff Platform Engineer | 200k - 250k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4803038007
5. Staff Software Engineer | 200k - 250k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802916007
6. Account Executive | 140k - 180k USD Base Salary + Uncapped On-Target Commission at 50/50 Split | https://job-boards.greenhouse.io/beautifulai/jobs/4955956007