Steel is building open-source browser infrastructure for AI agents & apps. We make it easy for AI engineers to ship products that interact with the web using our Sessions API - An API that controls fleets of browser sessions in the cloud while we handle everything from scaling to antibot and more.
Our tech stack:
- Frontend: Vanilla React + TailwindCSS + Shadcn, built with Vite, deployed on Vercel
- Backend: Fastify, Node.js, Zod, NATs, Drizzle with Redis, PostgreSQL, and S3
- Infrastructure: Pulumi, Go, Firecracker VMs, Docker
- Languages: Mostly Typescript, Rust, Go
With over 6,000 GitHub stars, dozens of paying customers, and millions of sessions served, we grew our platform 50x in 2025 purely through word-of-mouth and our open-source community. Backed by world-class investors, we're building a small, talent-dense team that's shaping the future of how humans & agents interact with the internet.
Current roles (all roles include competitive comp + equity):
- Infrastructure Engineer: Design, optimize, and scale our browser VM infrastructure
- Applied AI Engineer: Build on agent frameworks, integrations, and real-world AI use cases
- Founding Growth Lead: Own the growth machine to turn insane organic traction into a category-defining brand
- Founding GTM Lead: Be our first sales hire, closing deals with AI startups transforming entire industries
To learn more & apply (Mention HN): https://jobs.ashbyhq.com/steel
P.S. If you're feeling spicy, try our optional hiring challenge and submit the flag with your application once you reach the final step → https://challenge.steel.dev
- Engineer - Hybrid SFO I'm looking for an junior-to-senior software engineer to work with me (CTO) directly. Our systems process millions of pages of documents a month for the mortgage industry. We work with some of the largest lenders in the country and are at the forefront of applying LLMs and other multi-modal models in this industry.
New-grad and junior engineers particularly encouraged to apply. Looking for people who are motivated to write good code with a good mix of practicality and aesthetics.
- SRE - US Remote (SFO or Seattle preferred) - This is a broad role on the platform team including AWS infra w/terraform, software engineering, and IT
- Analytics Engineer - US Remote (SFO or Seattle preferred) - Another broad role that includes managing the data warehouse, building durable and ad-hoc reports in sql and python, and doing deep analysis.
Please apply here: https://jobs.ashbyhq.com/homevision/a3f79d43-5d9e-46bf-a43f-...
We're building the AI-powered workflow automation platform that ops and finance teams at Lyft, Flexport, WHOOP, 1000+ other companies use to turn their business logic into executable workflows. They're dealing with messy reality: PDFs, emails, spreadsheets, APIs scattered across systems. We let non-technical teams build production-grade automation by describing what they need in plain English.
Senior SRE: Join our platform team keeping the foundation solid as we scale. Own reliability, security, and developer experience for a multi-tenant system handling 100+ integrations. You'll be on-call, but working on genuinely interesting problems: making deploys boring, keeping customer workflows running, building infrastructure that compounds. Best fit if you care about enabling teams, not just managing pipes.
Senior Full Stack Product Engineer: Own entire features from idea to production. Build interfaces that make complex automation accessible to people who've never written code. Current problems: LLM-powered workflow generation, extracting structure from chaos (PDFs, emails, weird APIs), real-time collaboration on live data pipelines. The companies winning with AI in 2026 are the ones who made their business logic explicit and their context connected. We're building the layer that makes that possible.
Apply: https://jobs.ashbyhq.com/parabola-io or email cj@parabola.io
Kinelo manages the new type of hybrid team that will emerge in the future: humans+AI working shoulder-to-“shoulder”.
Our first product helps human software engineering teams deliver more efficiently and more reliably by assisting in coordination and engineering management. But it’s built on a foundational layer that ingests data, knowledge, and process across communications and systems, exposing that to humans and AI alike.
Eventually, Kinelo will become a proper human+AI orchestration layer, managing entire companies, and our goal is to have Kinelo run Kinelo (we already dogfood it today).
We’re looking for high ownership individuals to join our small team and shape its direction. We also just opened a new SF office and new hires will have the ability to help shape company culture, engineering practices, architecture, and roadmap.
We’re well-funded (just raised another round), founded by a serial founder, anti-bureaucratic, and highly technical.
We’re looking for:
- Those who want to go 0 to 1 with high ownership: moving features and products from idea on a napkin, to prototype, to engineering UI, to shipped and polished product
- ~8 years professional experience, including the pre-LLM days with strong CS fundamentals
- A balance of wisdom from experience and optimism about the future
- Strong TypeScript and Postgres (or other RDBMS) experience at scale and with high reliability (SaaS apps, APIs, etc)
- Experience with a variety of technologies, including containerization, distributed systems, and at least one strongly typed programming language (Go, C++, Java, etc)
- Ideally experience with ML and AI systems (though expertise in ML, data science, etc is not needed for this role)
We can’t sponsor visas but relocation assistance to SF is possible.
Please apply here: https://job-boards.greenhouse.io/kinelo/jobs/4088659009 and also email jobs@kinelo.com, mentioning this post.
Kato is building a compliance-first AI servicing platform for the $24B lending market. While others treat regulatory guardrails as an afterthought, we’ve built a regulatory rules system with an AI decision engine on top. Our first product is a Voice AI agent currently handling loan servicing calls for major fintechs like Bilt Rewards and Parafin.
We are backed by Pear VC and angels from Brex, Bridge, and Square. You’ll be our second engineering hire, working directly with our CTO (ex-Google/Brex EM) and CEO (ex-Goldman/Brex).
The Role: As an early hire, you’ll own mission-critical projects across the entire stack. You’ll lead the architecture of our real-time voice processing system, optimize LLM integrations for compliance-aware conversations, and build out our customer-facing dashboards.
Tech Stack:
Backend: Golang, PostgreSQL
Frontend: Next.js, TypeScript, React, Tailwind
Infra: AWS, Terraform, Kubernetes, Docker
AI/ML: LLMs, Speech-to-Text, Text-to-Speech
Requirements:
2-5 years of production software experience.
Strong API design and architectural thinking.
An "owner's mindset"—we are a small, high-intensity team where everyone drives product direction.
Experience with WebRTC, real-time audio, or FinTech is a plus but not required.
Location: San Francisco (4 days/week in-person).
To apply: https://jobs.ashbyhq.com/Pear-VC/214dc247-0778-485b-8a3d-067...
What makes Squint special?
- Our customers include some of the most iconic manufacturing brands across Food and Beverage, Automotive, and Consumer Package Goods. Work here literally transforms how the world around you is made.
- We're not replacing people with AI, we're up-leveling them; capturing insights, turbocharging workflows on the factory floor, and making every operator an expert.
- We're bringing consumer-grade quality to enterprise software, combining cutting-edge tech with deep customer empathy to build a product that's powerful, magical, and deeply loved by our users.
High Priority Open Roles:
- Applied AI Engineer
- Software Engineer, Backend Infrastructure
- Senior GTM Recruiter
- Senior Accounting Manager
- Director of Enterprise Sales, Energy Sector
- Customer Strategy Partner
- Strategic Enterprise Account Executive
- Senior Sales Engineer
View full list of roles and apply here: https://jobs.ashbyhq.com/squint.ai?utm_source=Hackernews
Hiring 4 full-time Software Engineers for low-level C++ systems work (HFT skillset preferred), reporting to the CTO, team from Citadel Securities, Aquatic, Old Mission, Bain
We're a cloud provider using GPU virtualization software to arbitrage GPU prices.
We research technology to use GPUs more efficiently than competitors. Our cloud network attaches GPUs over TCP to eliminate downtime. This lets us buy GPU compute, make it more efficient, and resell it at 60%+ profit margins.
We recently closed ~$4.5M of funding to recruit the world's best low-level talent.
If you're cracked at building C++ systems software and looking to do something more meaningful than creating liquidity in the market, reach out.
To apply: email met at carl@thundercompute.com and mention HN. I read every email.
At Tasklet (https://tasklet.ai/), we're building the world's most powerful AI agent platform for business automation.
We're looking for a staff-level software engineer to share technical leadership of our core agent infrastructure. You'll architect systems for multi-step agent orchestration, state management, trigger systems, and seamless integration with thousands of APIs.
Our stack: TypeScript, React, GCP, Kubernetes, Claude
Looking for: 5+ years experience building production-scale systems, proven technical leadership, experience building AI agents, exceptional programming skills across the full stack.
Compensation: $260k-$330k salary + 0.8-1.6% equity, competitive benefits including medical, dental, vision, 401k, 4 weeks PTO
Apply: https://shortwave.notion.site/Open-Positions-at-Tasklet-2a36...
Unit is building GTV, a new video platform that can automatically produce high-quality, personalized content.
Our team is from Instagram, TikTok, and NVIDIA. We're backed by Khosla Ventures, Air Street Capital, and angels from top AI labs. We have strong traction, paying customers, and an exciting year ahead.
We're hiring for multiple roles:
- Backend Software Engineer: https://jobs.ashbyhq.com/gtv/d17dd0c3-cb91-4dcb-8543-3752807...
- Fullstack Software Engineer: https://jobs.ashbyhq.com/gtv/7ef9e46c-7b8c-49c3-b138-b055af7...
- ML Infra Software Engineer: https://jobs.ashbyhq.com/gtv/954d9a64-90f1-4e38-85c9-9873a60...
- Product Designer: https://jobs.ashbyhq.com/gtv/9b36a9a2-a865-4cc8-8b88-0892189...
If you're interested, please reach out directly to us at careers[at]unit.inc
We are building the AI Operator for growth to replace traditional ad agencies. We apply quant rigor of high-frequency trading to optimize ad spend, delivering 20-50% upside in spend efficiency. We manage spend for global category leaders like Cider and Cupshe with a clear path to managing billions of dollars. We are backed by Quiet Capital and are hiring for multiple engineering roles:
- Member of Technical Staff, Full Stack - https://pepr.ai/careers?ashby_jid=6025c6f4-3b72-4dc6-8a2c-fa...
- Member of Technical Staff, ML & Optimization - https://pepr.ai/careers?ashby_jid=baf0e7ac-164f-4f1d-9938-de...
- Member of Technical Staff, Product - https://pepr.ai/careers?ashby_jid=e6d130a7-29c0-420d-b954-ba...
Please send a note to founders@pepr.ai if you apply.
Shaswat, co-founder & CEO
[Leadership] Engineering Manager (SF) https://grnh.se/s7yxefzs5us
[Leadership] Staff SWE, AI (SF) https://grnh.se/0w7ot24o5us
Staff SWE, Product Security (SF / NYC) https://grnh.se/b2kbmt3j5us
Senior Infrastructure Engineer (UK) https://grnh.se/6c1kjk525us
SWE, AI (SF, NYC, DC) https://grnh.se/yl9kuqrg5us
Sr Software Engineer (SF, NYC, DC) https://grnh.se/gwf63pot5us
Sr Product Designer (SF / NYC) https://grnh.se/s96svypy5us
Sr Design Engineer (SF) https://grnh.se/z8ev1cgu5us
Product Manager (SF) https://grnh.se/kyvpq2ww5us
We're building automation software for the $7T insurance industry, accelerated by AI. Seed stage in terms of headcount (~ 20 people) but Series B in terms of business traction (+ cash-flow positive). We've intentionally stayed under the radar.
- Product has caused customers to literally cry tears of joy
- Experienced eng team from Airbnb / Brex / LiveRamp
- Stack: TS, Postgres, React, GraphQL, and Next.js
Apply here: https://comulate.com/careers
We help experts earn meaningful income, often five figures a year, by sharing what they already know through Zoom calls, surveys, and AI interviews.
Team: We’re a small, senior team that values quality, simplicity, curiosity, and collaboration. If you’re excited about building thoughtful user experiences and high-quality software, reach out!
Product: On the surface, the product looks simple: search, match, connect, and pay. Under the hood, we're tackling interesting engineering challenges.
- Search & Discovery: Surface the right experts instantly from structured and unstructured queries - Data & Recommendations: Build a knowledge graph from scratch to power better insights - Workflow Automation: Design and streamline multi-step workflows with AI - Performance & Scaling: Ensure speed, reliability, and scalability as we grow
Open roles:
- Senior/Staff Software Engineer, Full Stack: https://jobs.ashbyhq.com/office-hours/f9e9f476-100b-4d86-b36... - Software Engineer, Full Stack: https://jobs.ashbyhq.com/office-hours/664c0299-27c5-4550-91e... - Senior Product Designer: https://jobs.ashbyhq.com/office-hours/d4ad4cb1-8ccd-49a9-b97...
P.S. Let us know in the application that you found us on HN. It helps separate signal from noise.
Taking on the entire insurance industry.
Full stack software engineers. Python and typescript.
https://calendly.com/sam-corgi/session
corgi.insure
Tamarind hosts AI drug discovery models for biotech/pharma researchers. We’re building the infrastructure to power R&D in pharma companies and enable them to harness the latest advancements in computational biology, such as molecular ML models like AlphaFold.
We're hiring engineers who are excited to scale GPU inference, design intuitive applications for scientists, and build secure enterprise-grade software. We’re a series A company started 2 years ago, and have 10x’d revenue within the past year. We’re used by 7 of the top 20 pharma, dozens of biotechs, and tens of thousands of scientists. We’re hiring for a variety of engineering roles, including generalist software engineers and infrastructure engineers. We value ownership, moving quickly, and a focus on customer needs.
Stack: AWS, Python, React, Javascript, Kubernetes
Apply here: https://www.ycombinator.com/companies/tamarind-bio/jobs or email me at sherry@tamarind.bio.
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 100 over the last two years.
Full-Stack Engineers | $120k - $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.
--> 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
Hi HN - I'm the founder of Stardrift, and we're looking for a founding engineer to join our team of 3.
We are building a world-class travel agent experience. In the future, you won’t book travel by opening ten tabs in Google Flights; you’ll book through a personalized AI assistant that understands everything about you and automatically arranges your trip for you.
You'll tackle everything from optimizing LLM performance and building evals to integrating with APIs for rail and flight networks around the world. We care about moving fast and writing high-quality code; your job will be to take customer feedback and improve our product, working with me & the rest of the founding team.
Here's a tech blog we wrote about some of the systems engineering we do: https://stardrift.ai/blog/streaming-resumptions.
You can find more info at https://www.ycombinator.com/companies/stardrift/jobs/nC7cjhB.... Email leila@stardrift.ai to apply.
Foxglove is the leading observability & data platform for robotics and physical AI. Our software supports the full data lifecycle, from collection, upload, and storage, to analysis and visualization. We're assembling the most talented team in the industry to build a platform for all types of robots. Sound interesting? Join us!
Many engineering & product roles:
- Data Engineer
- Rust Engineer
- Frontend / Viz Engineer
- Product Designer
- Visual Designer
GTM roles:
- Solutions Engineer
- Account Executive
We are hiring for four roles:
1. Full Stack Engineer: Full Stack Engineer to support our benchmarking of AI and with communicating these benchmarks to our users. Proficiency in Typescript & Python required. Familiarity with LLM APIs preferred. Tech stack: Javascript/Typescript, Node.js, React/Next.js, Python.
2. ML Engineer: ML Engineer to support our benchmarking and evaluation of AI software stack. You will design and run benchmarks and evaluations of different AI models. Strong analytical skills and proficiency in Python required.
3. Member of Technical Staff: You will develop benchmarks to test AI models and work to translate technical insights to analysis that helps companies navigate AI.
Apply at hiring (-at-) artificialanalysis.ai with your resume, github and dot points on relevant experience (including anything you've built). Add | HackerNews to email subject line.
Firetiger is building self-driving software operations. We believe the future of DevOps isn't better dashboards (like Datadog), but autonomous agents that monitor, investigate, and remediate issues based on high-level business goals. We are backed by Sequoia Capital and founded by Rustam and Achille, former leaders from Cloudflare and Segment.
We are looking for a Product Engineer to build the interfaces between humans and AI agents running software on behalf of those humans. More here: https://jobs.ashbyhq.com/firetiger/f5d4ba4b-29c8-4f77-bae8-8...
We're hiring engineers across the stack at Opendoor. We're building technology to simplify residential real estate - making it easier to buy and sell homes. Our engineering challenges span everything from marketplace dynamics and pricing models to complex operational workflows and integrations with industry systems. If you're interested in applying technology to modernize a massive, traditional industry, we'd love to hear from you. yan at [our domain].com :D
Engineers can't keep up with their production environments: dozens of services, dashboards everywhere, alerts firing. The information to diagnose most issues exists, but finding it takes longer than fixing the problem. AI generated code is making this worse.
Cleric is an AI SRE that autonomously investigates production issues and surfaces findings to engineers. It connects to your existing tools, reasons through the evidence, and tells you what's wrong. We believe engineers should ultimately be accountable in production, and our goal is to help them go much faster.
The hard part is making agents reliable when there's no single right answer. We've built evals, memory systems, and feedback loops that improve with every incident. Gartner just named us a Cool Vendor, we are well funded with years of runway, and most importantly the engineers that use our product find it very sticky.
We're hiring the following roles:
- Staff SWE, AI: Build the reasoning engine. Design evals, debug agent behavior (not just code), expand what it can handle. You've built agents and operated distributed systems at scale.
- Staff SWE, Product: Define what AI SRE should be. Spend time with engineers during incidents, find gaps, decide what to build. You've owned products and know production pain.
- Head of Marketing: Engineers love the product but we need to reach more of them. Software engineers are allergic to AI hype, and you'll need to cut through it. Technical background required.
Apply: https://jobs.ashbyhq.com/cleric Or email me: willem-hn@cleric.ai
Willem, Co-founder & CTO
Rinse provides dry cleaning and laundry delivery services to customers in twelve metropolitan areas in the US and Canada. We have sophisticated logistics optimization software, a polished consumer product, and firm business fundamentals. We're now over a decade old - this is a stable, yet consistently growing and innovating, company.
Our engineering team is distributed across the United States and internationally, and has been entirely remote for years now, but a desk can be provided in the above cities if you'd prefer.
We're open to both newly-graduated engineers or more senior engineers, provided they meet our bar. We're particularly interested in true full-stack engineers, with strong React / Typescript / CSS skills to complement comfort in a Python / Django environment. We're also seeking engineers with experience leveraging AI to automate complex operational processes.
Search term bingo: Logistics, Django, Python, Optimization, React, React Native, Postgres, Mobile Engineer, Automation, Delivery, OR-tools
Rainbow is a tech-enabled small-business insurer. We built software that underwrites small businesses (starting with restaurants) and evaluates them against various risks to provide them with insurance policies. We've been live for only 2.5 years but already one of the top insurers of restaurants in the US. We are looking for an experienced software engineer to join our team and help us grow and innovate. We've raised around $20m to date with a series A around end of 2024. We've grown massively over the past year. Most of our problems we're currently working on are about building tech as we expand out to other categories of insurance and insuring other types of businesses.
Job Requirements:
- 5+ years of professional experience as a software engineer
- Experience in fintech is an optional but major plus
- Familiarity with our tech stack (Golang, React through a Next.js app, GraphQL, PostgreSQL) is beneficial but not required
Why You’d Enjoy Working with Us:
- You're joining a small fast paced team: 12 engineers, 40 people total
- Direct impact on solving real-world problems for small businesses
- Hybrid work model with 2 days on-site in SF
- Competitive salary and benefits
If interested, please reach out at hn@userainbow.com with your resume attached to the email.
You can also visit our site to learn more: https://www.userainbow.com/about
Tech stack: TypeScript | Node | React/Next.js | Postgres | Docker | K8s | LLMs
We’re building the AI-powered infrastructure layer for small-business lending. Banks and fintechs use Omni to automate document collection, financial modeling, public-record research, and ongoing borrower communication.
You’ll work on:
1. Wrangling messy PDFs into usable data (we built a major open-source extraction library: https://github.com/getomni-ai/zerox)
2. Aggregating millions of datapoints from 50+ public sources (UCCs, liens, licenses, tax records) + credit/KYC/AML data
3. Building real-time financial models that combine OCR, LLMs, and rule-based systems into predictable outputs
We’re early, you’ll have a huge impact. Email me (my name at the URL) or apply here: https://www.ycombinator.com/companies/omniai/jobs/Dr0GIaE-fu...
Scorecard is the simulation platform for self-improving AI agents. We help teams encode expert judgment into reward models and run 10,000s of scenarios in minutes instead of reviewing 10s of production cases over weeks.
Our team built simulation systems at Waymo, Uber ATG, and SpaceX. Same discipline, applied to AI agents. Backed by Kindred Ventures and Neo, with multi-billion dollar customers.
Founding Software Engineer ($175k-$250k + equity)
Build infrastructure for large-scale agent simulation, reward model pipelines, and scenario generation. Ship fast with a low-ego team.
Stack: TypeScript, React, Node.js, Postgres. Bonus: LLM/RL experience, founder background.
https://www.scorecard.io/careers/software-engineer
Founding GTM Lead
Own demos, sales playbook, and positioning for AI teams building frontier agents. 3+ years early-stage sales/product marketing. AI/developer tools experience a plus.
https://www.scorecard.io/careers/founding-gtm
In-person in SoMa. Full benefits, daily lunch, unlimited PTO.
Apply: jobs [at] scorecard.io (mention HN)
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!
Brilliant is building world-class interactive learning experiences that combine challenging problems, compelling narratives, and delightful visual storytelling.
We're hiring an Android engineer to help craft the next generation of interactive learning and change how the world learns.
Engineers at Brilliant think about both "building the right thing" AND "building the thing right" while pursuing high standards of excellence for ourselves, our product, and our codebase.
If you're energized by the prospect of doing the best work of your career and changing how the world learns alongside the most talented peers you've ever worked with, you can learn more and apply here: https://brilliant.org/careers.
Unit is building GTV, a new video platform that can automatically produce high-quality, personalized content.
Our team is from Instagram, TikTok, and NVIDIA. We're backed by Khosla Ventures, Air Street Capital, and angels from top AI labs. We have strong traction, paying customers, and an exciting year ahead.
We're hiring for multiple roles:
- Backend Software Engineer: https://jobs.ashbyhq.com/gtv/d17dd0c3-cb91-4dcb-8543-3752807...
- Fullstack Software Engineer: https://jobs.ashbyhq.com/gtv/7ef9e46c-7b8c-49c3-b138-b055af7...
- ML Infra Software Engineer: https://jobs.ashbyhq.com/gtv/954d9a64-90f1-4e38-85c9-9873a60...
- Product Designer: https://jobs.ashbyhq.com/gtv/9b36a9a2-a865-4cc8-8b88-0892189...
If you're interested, please reach out directly to me at omid[at]unit.inc
We’re building a general AI for humanoid robots using world-model-based reinforcement learning trained on large-scale real-world data.
This is a founding engineer role. You’ll work directly with the founders and own core parts of the training and data systems.
Work - Build data pipelines for large-scale multimodal robot datasets - Scale pre- and post-training runs to large GPU clusters - Improve inference efficiency on low-power embedded systems
Stack: Python, PyTorch, Kubernetes, Ray, Lance, dora-rs
Contact: alex [at] tau-robotics.com
We also run a founder foundry that helps scientists and engineers start startups: https://www.fiftyyears.com/5050
We're hiring for many roles:
1/ Engineers for our product team, which builds tools to help us better support founders.
2/ A Head of Marketing, to help us help our founders better tell their stories.
3/ Former founders for the partnerships team, to help mentor our portfolio founders.
4/ Opportunistically for other roles as well.
ONSITE in San Francisco and London.
Email join AT 50y DOT com
Hi HN! We’re a YC-backed, Series-A startup building robots that build large-scale solar farms.
Check out a video of our first system here! https://youtu.be/ZZ2fP1Y5Z2E
It turns out that construction companies literally can't build solar fast enough, so what we're doing is a crucial part of switching the grid over to renewable generation.
You’ll be a key contributor, helping bring our next generation of mobile solar factory to life.
Come work with us if you love:
* Fast-paced prototype development with software and hardware components
* Making a positive climate impact through your work
* Hacking on massive construction equipment!
Senior Robotics Software Engineer: https://jobs.ashbyhq.com/charge-robotics/b2aa347c-4738-4065-...
Senior Mechanical Engineer: https://jobs.ashbyhq.com/charge-robotics/19133a2e-f262-4f3d-...
Lots more: https://jobs.ashbyhq.com/charge-robotics
Gauge helps companies show up in more AI answers. Search traffic is shifting away from Google into AI chat, and companies are figuring out how to adapt right now. Our system delivers real-time analytics derived from millions of LLM answers, while providing an intuitive, powerful UX. We also generate optimized articles to improve our customers’ visibility, and offer an agentic chat interface over their data (think ‘Why was there a spike on 12/10?’ or ‘Which of my pages should I refresh?’).
I'm Evan, the CTO, and we're looking for engineers with strong programming fundamentals, creative problem solving skills, and a high-agency working style. You might be a good fit if you are an ex-founder, ex-founding engineer, or have worked at a Seed/Series A startup.
We primarily use Django, React, Postgres, Celery, and Clickhouse.
Contact me with your resume (and mention HN) if you're interested: evan[at]withgauge.com
More details/JD also here: https://www.ycombinator.com/companies/gauge/jobs/qemTjv7-fou...
RunReveal is the Security Data Platform that's building tools to help companies detect and respond to threats in their network. We're a team that values speed, quality and curiosity. Our stack is Go, NextJS (TS), Postgres and ClickHouse. We believe that companies should be able to own their security data and get value out of it too and so we've built a platform that can be deployed anywhere. SIEM sucks, so we're here to fix it.
If you're into self hosting or running a homelab, or you're using LLMs to enhance your development workflow and extend your knowledge and not just regurgitate slop, or you're always looking for opportunities for self improvement, you're in good company at RunReveal.
We've got phenomenal customers like Cursor, Harvey, Temporal, Linear, DigitalOcean, ClickHouse and AngelList among many others that we work with on a daily basis to improve the product.
We're especially interested in folks that have experience working with petabyte scale databases. We use ClickHouse, but experience with other similar large scale data technologies like Iceberg, Flink, Spark, ScyllaDB, Cassandra, InfluxDB, TimescaleDB, BadgerDB etc would also be valuable.
Reach out to me via alan at the company domain and mention hn who's hiring January '26 in the subject line.
Chroma is the open-source search and retrieval database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.
We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.
We're hiring for these areas:
- Product design
- Production engineering
- Platform engineering (Rust)
Apply here: https://jobs.ashbyhq.com/trychroma/9ed3aee8-07dd-44e3-9ca1-d...
More details at: https://careers.trychroma.com
Gobii is the easiest way to deploy browser-use agents in the cloud or on-premises. We're building an open-core AI workforce platform—browser-native agents and automation tools. We have paying customers.
The entire team contributes to browser-use. We also have contributors to Apache NiFi, LiteLLM, and RA.Aid (open-source coding agent I created). Open source is core to how we build and how we think. We're backed by Open Core Ventures.
HQ is San Francisco, but much of the team is in the DC area. East Coast timezone preferred, DC area even better—but we're fully remote.
What we're building: The orchestration layer for browser-use and AI agents. Systems that navigate, reason, and execute on the real web.
Who we're looking for: You've built agentic systems that shipped to production. You have opinions about tool use, context management, and why most "agents" are just glorified prompt chains. You strongly prefer working in the open—a significant part of this role is contributing to OSS repos. We strongly prefer candidates with existing open source contributions.
Why now: We have strong traction and are expanding the team. You'd be early—with real influence over product, architecture, and how we work. High autonomy, high trust, small team of people who know what they're doing.
Comp: Cash + healthcare + modest 401k match + options. In line with SF-based VC-backed startups at pre-seed stage.
Stack: TypeScript, Python, browser automation, LLM orchestration.
Email: careers@gobii.ai (subject: "HN")
Fluidstack is a full stack AI infrastructure company building datacenters, deploying GPUs, and operating hundreds of thousands of accelerators for top tier AI labs. We're also partnering closely with Anthropic (https://www.anthropic.com/news/anthropic-invests-50-billion-...) on deploying GW scale clusters.
More info at https://careers.fluidstack.io/jobs or ping careers at fluidstack dot io!
We're building an agent to manage single family rental properties across the United States. We currently manage ~4,000 homes, are growing quickly, and are looking for full stack, backend leaning engineers who would love to contribute to a state of the art agent.
I've written a bit about our culture + product before:
-> What it means to be "in-person" with our customers: https://medium.com/@maspinwall22/being-there-5c167dd8b163 -> LLM Communications in the wild: https://medium.com/@maspinwall22/llm-communications-in-the-w...
If interested, reach out directly to me: michael@thisismason.com
We're creating state of the art AI models, including the leading foundation model for Deepfake Detection. Looking for full stack, frontend and machine learning engineers that would love to create prototypes directly with the founders.
Here's what we're looking for:
Full Stack Engineer - We are seeking a skilled Full Stack Engineer with experience with both Javascript and Python to join us. The ideal candidate will have a strong background in building and deploying web applications, a passion for working on cutting-edge AI technologies, and the ability to collaborate closely with our founders to create innovative prototypes.
Product Lead - Ownership over our security AI model product suite. Lead technical + product conversations with customer engineering/security stakeholders.
Solutions Engineer / Forward Deployed Engineer - Own technical success for enterprise integrations: take customers from first POC → production rollout → expansion. Partner with product/engineering to turn customer friction into roadmap, and advocate for the highest-leverage fixes.
If interested, reach out directly to me: zohaib [at] resemble.ai
- Senior Backend Engineer | SF, Remote (North America) | Full-time | $170-225k + equity
- Software Engineer | SF, Remote (North America) | Full-time | $140-200k + equity
- Forward-Deployed Product Manager | SF | Full-time | $120-170k + equity
- Growth Chief of Staff | SF | Full-time | $105-$135k + equity
- CSM | SF | Full-time | $120-170k + equity
- Account Exec | SF | Full-time | $120-270k + 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. Selling 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#open-positions (and make sure to mention HN!)
Baton (baton.io) is Ryder's in-house product development group focused on harnessing emerging technologies to redefine transportation and logistics. With $10B in freight under management, our technology reaches every part of the U.S. economy.
We design and ship category-defining software that enables Ryder and its 50,000+ customers—including some of the world's most well-known brands—to plan and execute freight intelligently, efficiently, and cost-effectively. Our work includes everything from customer-facing software to the data platform that will power the next era of innovation at Ryder.
Baton's mission: enable supply chain on autopilot.
Ryder acquired Baton in 2022 to power its next wave of digital products. We operate at startup speed, with Fortune 500 reach. If you have a passion for solving complex problems and creating impact for the engine of the American economy, you'll love it here.
Current openings at Baton:
* Senior Software Engineer - Infrastructure, Machine Learning (Technical Lead, $200,000 - $250,000): https://grnh.se/2f33dr0p7us
* Staff Software Engineer - Infrastructure, Machine Learning ($250,000 - $330,000): https://grnh.se/sdu5uj7i7us
* Staff Software Engineer - ML Ops, Technical Lead ($250,000 - $330,000): https://grnh.se/r0zdjmtk7us
* Senior Software Engineer - Full Stack, Technical Lead ($200,000 - $250,000): https://grnh.se/wkmk2d0e7us
* Software Engineer - Infrastructure, Data Platform ($162,000 - $216,000): https://grnh.se/d6s6od6w7us
Conductor lets you run a team of coding agents on your Mac. We launched in July through Show HN, and are used by engineers at companies like Linear, Vercel, Notion, Stripe, and YC.
We’re on a mission to build the human interface to AI organizations. We’re a team of four looking for one or two more exceptional engineers or designers. No AI experience needed, just some enthusiasm for the awesome alien power of LLMs.
https://www.ycombinator.com/companies/conductor/jobs/MYjJzBV...
Northstar is a seed-stage cybersecurity startup building an agentic platform to help security teams understand and defend the complex environments they're responsible for. Our semantic layer integrates data from the fragmented security and IT tools that teams have to deal with and allows for an AI-native approach to reasoning over a company's security posture.
We're looking for someone with hands on experience building modern AI systems who wants to join an early startup (<5 engineers) and everything that comes with it: working closely with design partners, solving hard technical problems, working in a fast-paced environment and figuring out how to apply agentic AI in practical, novel ways.
Contact me if you're interested - alex@northstar.security
Marketing Lead (Developers) - Remote friendly | Tech Lead (CI & Test Data Platform) - San Francisco| Senior Platform Engineer - San Francisco | DevRel Engineer - San Francisco|
Trunk is an a16z funded (25M) Series A dev tools startup, redefining software development at scale. At Trunk, our mission is to help teams create high-quality software quickly. We've helped engineerings teams at: Google X, Zillow, and Brex to understand why their builds fail, which tests are flaky, and how to ship code faster without sacrificing reliability. AI has made writing code 10x faster, but shipping is still painfully slow. The bottleneck has shifted downstream - to merge conflicts, flaky tests, inconsistent code quality, and dozens of other frictions that drain productivity and morale. Engineering teams that can stay focused on designing, implementing, and delivering software will build magical, high-quality projects - and they'll be happier doing it. We're building a CI Reliability Platform that empowers teams to land code faster and develop happier!
Our products:
* Merge Queue: Ensure your PRs keep the builds you care about green at any scale. *Flaky Tests: Detect and eliminate Flaky Tests. Our tech stack: Frontend: Typescript, React, Next.js, AWS Backend: Typescript, Node, AWS Data pipelines: Dagster, Python, polars CI/CD: GitHub ActionsUnlimited PTO (and we all actually take PTO), competitive salary and equity packages! Please apply here: https://trunk.io/jobs
1. Technical Liaison :
Requirements:
2+ Years of Working in Tech Experience | Good Communication Skills | Bachelors or Equivalent Degree
2. Infrastructure Engineer :
Requirements:
3+ Years of Experience as Infra Engineer | Stack - Python, Go, Kubernetes, GCP/AWS/Azure , Cloudflare
3. Project Lead (UI/UX) :
3 + Years of Project Development Experience | Good understanding of market requirements | A/B Testing | Engineer or similar degree
4. Customer Support Executives [English OR Hindi]
2 Years of Customer Support Experience | Speaking Skills | Ability to follow tasks at hand
5. Marketing Posts (3 Positions)
Experience with Marketing and Advertisement | Out-of-the-box Thinking Ability | Led or Organised Events
Note: Keep the position you're applying for in the title.
Apply via Mail : careers@doshare.me
Marker is a technology venture from 3 leading communications agencies. We’re an incubator building and launching force-multiplying software products for communications teams.
Our first product is Delve (https://delve.news) — a coverage monitoring, analysis, and insight toolkit to track and measure the entire online conversation about your business or industry.
Our product team is small and autonomous, but with the resources, expertise, and customer access of the global agencies we work with. We’re hiring an early engineer to join us on this journey; you’ll have a large impact on what we build, how we build it, and where we’re going next.
Our current technology stack includes Deno, React, and PostgreSQL. Bonus points for expertise in any of: data visualization, distributed systems, web scraping, large-scale data pipelines.
Contact: dylan (at) company domain. No recruiters or agencies, please.
https://jobs.gem.com/piqenergy/am9icG9zdDp5j21vRWEpgIUq005H6...
Piq Energy builds software that helps renewable and large-load developers get projects connected to the electric grid faster. We automate grid interconnection studies and planning workflows.
You’ll own features end-to-end: interactive frontend, backend APIs, data pipelines, AI agents, and power systems simulation workflows. We’re looking for experienced generalists who like ownership, real-world impact, and scaling startups.
Stack: Typescript, Svelte, GraphQL, Mapbox, D3.js, Python, LLM agents, Postgres, workflow orchestration