Company site: https://jigsawstack.com
At JigsawStack, we’re building specialized small models that automate complex backend tasks like OCR, web scraping, classification, data extraction, and more. We power thousands of developers and process billions of tokens every month.
We’re hiring our first Founding GTM, someone who wants to architect the entire GTM engine, experiment aggressively, and push the boundaries of AI growth.
You’ll own automation, outbound systems, GTM tooling, growth experiments, and the workflows that expand JigsawStack’s reach. This is a growth role where you’ll build pipelines, write scripts, automate everything possible, and systematically scale distribution.
As an early team member, you’ll work directly with the founders, run high-velocity experiments, and shape JigsawStack’s playbook for years to come.
More info and apply here: https://yoeven.notion.site/founding-gtm
Email here for more questions: careers@jigsawstack.com
Fullstory provides privacy-preserving session replay and analytics for websites and mobile apps. Our session replays are nothing short of magical - they look almost like a video of the user's screen (with private details redacted) - and the combination with analytics creates eye-opening insights.
Remote (US):
* Senior Software Engineer, Android - $160~170k - Java, Rust, Kotlin, Compose Multiplatform - https://www.fullstory.com/careers/jobs/3be8b5f8-b05c-4221-b9...
* Senior Software Engineer, iOS - $160~170k - Objective-C, Swift, SwiftUI - https://www.fullstory.com/careers/jobs/1c9234a4-af67-428d-91...
Atlanta, USA (1 day per week in office):
* Software Engineer, Digital Experience Analytics - Go, TypeScript, GCP - https://www.fullstory.com/careers/jobs/a786962d-68c1-48fa-8b...
* Software Engineer, Subtext - AI agents, Go, TypeScript - https://www.fullstory.com/careers/jobs/073bfc41-0ac6-4e59-a5...
We have additional engineering and product design roles open in Colombia and Czechia as well as other roles in product management, sales, HR, support, and solutions in the US and UK. See the full list at https://www.fullstory.com/careers?ashby_jid=bce3fcba-6b80-43...
For US roles, you can expect regular raises & bonuses, equity, and benefits including: health insurance, 401k matching (Vanguard), annual learning stipend, unlimited PTO, parental leave, and more. I take about 4-5 weeks vacation a year, in addition to ~3 weeks worth of company holidays (federal holidays + the week of Christmas to New Years.)
Folks in other countries can also expect a strong benefits package, but I'm not as versed on the details.
Additionally, you get a 5-week sabbatical after 5 years of employment - I took mine about a year ago, and it was fantastic.
To apply, please submit your info on the website, and our recruiting team will get in touch with you. If you have questions, feel free to reply here or contact me directly. (I'm an engineer on the iOS team, but I'll do my best to answer questions.)
We work on industrial/grid-scale batteries and other renewable generation: monitoring, managing and trading them on multiple energy markets. Batteries like these: https://en.wikipedia.org/wiki/Battery_energy_storage_system Everyone starting from the C-suite is passionate about addressing climate change and transitioning to renewable energy!
We're a small team of 7 backend engineers atm (other teams have Ops, FE and DS roles). We have paying customers and have been around for 10 years. Our current goal is to make the platform more scalable to deal with the customer growth and move to new markets. The biggest challenge is understanding how the various energy markets and energy storage in general work and then translating that to reliable working software.
We're currently looking for a Senior Backend Engineer (Go). Our office is in London Blackfriars and most engineers come in about 2 days a week, but this is flexible.
Feel free to message me with any questions or apply directly:
Freetrade is a commission-free investing app used by over 1 million people in the UK. Our team is expanding, and we’re seeking software engineers to evolve and scale our core investing platform.
In this role, you will be instrumental in building and maintaining reliable and trustworthy systems for trade execution, clearing and settlement, asset servicing, and internal operational tools.
You will also play a key role in shaping our technical direction and mentoring other engineers as our team grows.
Tech we use: TypeScript, Node.js, Postgres, and GCP
Note: We are three days in the office We don’t sponsor visas at the moment.
We are hiring across the board in engineering, data, people, marketing, risk & compliance and finance.
See all of our opportunities here: https://freetrade.io/careers
Tracebit is an Accel backed, UK founded security product company taking a new look at canaries for intrusion detection.
We work with some amazing companies (Docker, Riot Games, Synthesia, Zepz...) to help detect threats in cloud and enterprise.
We're hiring:
* Founding Engineer | London | £60-120k + generous equity | Relocation & Visa sponsorship available
* Founding Account Executive | New York | $180-200k OTE + generous equity
* Founding Sales Engineer | New York / Remote | $180-220k OTE + generous equity
Learn more and apply: https://tracebit.com/careers#section_open-positions
We're the truth-seeking AI (Grok) that accelerates human scientific discovery and deepens our collective grasp of reality.
We're looking for the very best technical talent globally (in-office) - Palo Alto or SF / Seattle / Memphis / NYC / London / Dublin / Tokyo / Dubai / Singapore
292 jobs are currently open - https://job-boards.greenhouse.io/xai
Software Engineers - We're flexible, but think Rust / C++ / Python / Typescript / React
Infra/SRE - k8s / Terraform / ArgoCD / Go
Grok Engineers - machine learning fundamentals, including model evaluation, training and fine-tuning / Python / Typescript
If you're an Engineer and not sure what the best fit is, try applying for one of our 'Exceptional' roles and we'll assess where we think you'll fit: London - https://job-boards.greenhouse.io/xai/jobs/4956070007 Palo Alto - https://job-boards.greenhouse.io/xai/jobs/4956028007
Last step - if you want some assistance, email me at mspiers@x.ai - Include 'hackernews' in subject line and please attach your CV.
Runway is building AI to simulate the world through merging art and science.
We're looking for an engineer to own Runway's internal exploratory data analysis (EDA) and evaluation platform used daily by our ML research, design, product, and creative teams.
Apply here: https://grnh.se/iey0qx9m5us All roles: https://runwayml.com/careers
* We build AI that companies actually run in production (not demos) * You ship customer-facing LLM apps end-to-end: discovery → build → rollout * You sit at the intersection of product, engineering, and customer teams
Interesting problems you’ll work on: * Turning messy workflows + data into reliable RAG/agent systems * Making prototypes production-ready (latency, evals, reliability, security) * Building repeatable solutions that scale across customers
All roles are here: https://www.deepset.ai/careers Or reach out directly: https://bit.ly/juliaLN
Smarkets is a betting exchange for sports and political trading that has handled over £37 billion in volume since 2010. Our company mission is to fix the betting industry with the best products and best prices.
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...
We are looking for experienced engineers to join as our first hires, working with the founding engineer to develop a new generation of B2B sports trading technology. No prior domain or Go experience required.
This is a hands-on role focused on delivering highly performant and reliable services. If you're keen to help shape engineering culture, care deeply about the code you write, and thrive with ownership, this is a good fit.
We are a hybrid company, with one day a week in our Farringdon office.
We offer £90k+ salary and participation in the company bonus scheme.
Apply via website: https://apply.workable.com/forge-sports/j/D0E957D2C7/
Meticulous is building the world's first fully autonomous and exhaustive testing platform for frontend codebases. Our system replays real user sessions against every pull request to catch regressions before they ship. Customers include Dropbox, Notion, Wiz, Wealthsimple, and LaunchDarkly. We're a small, high-talent team (ex-Google, GitHub, Meta, Palantir) with exceptional product-market fit and rapidly growing revenue.
Engineering
Forward Deployed Engineer (Senior) — SF / London — On-site $200k–$400k base / £150k–£300k base + significant equity Customer-facing + deep systems work; own deployments end-to-end
Platform Engineer (First hire) — London — On-site £150k–£300k base + significant equity Infra, reliability, scaling replay of thousands of sessions per PR
Sales
Founding Account Executive — San Francisco — On-site OTE $280k–$400k + equity, uncapped commission Inbound-heavy, mid-market to enterprise (ACVs $100k–$1m+)
Tech highlights: TypeScript, browser internals, distributed systems, cloud infra, deterministic execution See all jobs and apply: https://jobs.ashbyhq.com/meticulous
I am listing mostly Mail desktop related positions, but there are a lot more on the site. New rust based client architecture: https://proton.me/blog/next-generation-proton-mail-mobile-ap...
1. Senior Software Engineer | London (UK), Geneva (Switzerland), Barcelona (Spain) | Windows, Linux, Rust, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4766179101
2. Software Engineer | London (UK), Geneva (Switzerland), Barcelona (Spain) | macOS, Windows, Linux, Rust, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4585460101
3. Staff QA Automation Engineer | London (UK), Geneva (Switzerland) | Mobile, Desktop | https://job-boards.eu.greenhouse.io/proton/jobs/4653905101
4. Senior Product Designer | London (UK), Paris (France), Barcelona (Spain) | Mobile, Desktop, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4606437101
5. Senior Product Manager | London (UK), Paris (France), Barcelona (Spain), Geneva (Switzerland) | Mobile, Desktop, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4364312101
At DeepL, we're building intelligent, trusted AI for language and beyond.
Hiring for technical roles:
Engineering (13 roles): Backend, Full Stack, Platform, SRE, Analytics, Data Engineering, Security
Research (8 roles): Research Scientists, Research Engineers, HPC Engineers, Research Tooling
Product (3 roles): Product Managers, Product Designers
Agentic AI (2 roles): Platform Engineers, Forward Deployed Engineers
All positions: https://jobs.ashbyhq.com/DeepL
At Speakeasy we craft developer experiences with care for our customers. We have a suite of products focused on helping team's distribute their products. We build: - An API platform that helps teams generate and maintain high quality SDKs, Terraform Providers and CLIs for their users by leveraging OpenAPI. The complete platform is usable as a set of claude skills. - A MCP Platform that helps teams distribute their product capabilities directly to coding agents, through chat and other agentic experiences.
We are a high agency team of senior developers with a passion for solving hard technical problems so our customers don't have to. Much of what we do is open source. Check out our github to get a sense of our tech: https://github.com/speakeasy-api
Roles: - Product Engineers for our Gram, our MCP Platform - Go, Typescript, MCP protocol, Serverless infrastructure - Product Engineers for our Code Generator - Go, Typescript, Linters, Compilers, OpenAPI, Code generation
Contact: hiring@speakeasy.com
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 | $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
Evervault's mission is to make world-class data security effortless and pervasive. We use applied cryptography to secure the most sensitive data, in the most sensitive areas like payments, banking and healthcare. We build products to protect customer data with the latest advances in encryption and confidential computing, so our customers can minimize the headache of compliance and data security.
We are a small team (10 engineering, 25 overall) hiring across engineering, sales, marketing and finance for people who are passionate about building out our roadmap of products to protect companies from data breaches in a world where data has become gold.
Open roles:
- Senior Software Engineer (Payments) - Product Engineer - Design Engineer - Head of Finance & Ops Out stack is: Rust, Node.js (TypeScript), AWSApply here: https://evervault.com/jobs or ask me a question shane@
We are MiLaboratories, the team behind Platforma.bio & MiXCR. We are building the "OS for Biology"—a platform that processes terabytes of genomic data to accelerate biological discovery and drug development.
We are a deep-tech research lab, not a typical SaaS. We work fully on-site in Bilbao because the complexity of our problems (high-performance computing + biological nuances) requires high-bandwidth, in-person collaboration.
We are hiring for three core roles:
1. Senior TypeScript Engineer (Desktop Platform / SDK): This is not a dashboard or a simple web GUI. You will build the architecture of our Desktop Platform—a high-performance local application that acts as the "OS" interface. You will deal with complex state management, massive data throughput, and bridge directly with our high-performance Rust data layer. We need someone who treats the browser engine as a runtime for heavy applications, not just for websites.
2. Senior Go Engineer: You will build distributed systems for high-load genomic data processing. This is not CRUD. We need someone who understands memory management, concurrency, and algorithmic efficiency at scale.
3. Bioinformatics Developer (Antibody Discovery): You will work on the scientific core, developing production blocks for NGS data analysis and antibody structure prediction. You should be fluent in both code and biology (Builder profile, not just analyst).
The Offer:
Comp: Top-tier EU salaries (~€90k - €120k).
Tax Advantage: Bizkaia has independent tax autonomy. You qualify for the "Special Impatriate Regime" (30% salary tax exemption + expense deductions).
The Reality: Your effective tax rate drops to ~15-20%, yielding a significantly higher net income than London or Berlin.
Stock: We grant ESOP and treat equity as a life-changing wealth vehicle, not a "nice to have."
Relocation: Comprehensive "Soft Landing" package (Visa, temporary housing, school search).
Location: Bilbao is a hidden gem—ocean, mountains, and high quality of life with a low cost of living.
Process: No HR screening. You will talk directly to the engineering team.
Email me (I am the CEO): stanp@milaboratories.com. Please mention "HN" in the subject and include your GitHub.
Mozart AI is a Digital Audio Workstation (DAW) with built-in AI Co-Production. We empower what we call the ‘Hybrid Musician’, an artist driven by human creativity and assisted by AI. You could say we want people to become “vibe musicians”.
We started around 8 months ago, have 80k+ beta users, and have been Product Hunt’s Product of the Day twice. Seed-stage (oversubscribed, will be announced soon) with meaningful equity for every role.
We’re hiring 2 engineers:
Full-Stack Engineer (Frontend-leaning): product UI/UX, React, Zustand, realtime-ish creative workflows, making the browser feel like a native studio
Full-Stack Engineer (Backend-leaning): platform + APIs + data and db design, reliability + performance, supporting fast product iteration
What you’ll like here:
Small team, high ownership, ship fast (by choice, you feel the urgency to change music creation)
Working on generative audio + creative tooling (hard but really fun problems)
More about us (Forbes): https://www.forbes.com/sites/charliefink/2025/07/01/mozart-a...
Try Mozart AI: https://mozartai.com/
Apply, we (I) review every application: send me an email at pascual (at) arthos (dot) inc , be creative :)
Coram AI is building an AI-powered video security platform that helps enterprises proactively detect and respond to real-world incidents. We work with large-scale video data, real-time systems, and applied computer vision.
What you’ll work on: • Backend systems handling real-time video and event data • Scalable APIs and data pipelines • Production AI/ML integrations • Building reliable, user-facing features end to end
Tech stack: • Backend: Python, Go, C++ • Infra: AWS, Terraform • Data: Postgres, streaming pipelines • Frontend exposure a plus (React), but not required
You might be a good fit if you: • Have 5+ years of professional software engineering experience • Have worked on backend or platform systems at scale • Enjoy working in small teams with high ownership
Salary - $150k–$250k USD / £90k–£130k GBP + equity
Crimson is the AI platform for high-stakes litigation. We’re a fast-growing YC-backed company working with leading law firms. We're looking for an exceptional full-stack engineer to join us as one of our first employees. You'll ship production code from day one and own major features end-to-end.
More info on the role here: https://www.crimson.law/careers/founding-engineer
Hey HN, I'm hiring engineers for the new Cloudflare Data Platform (https://blog.cloudflare.com/cloudflare-data-platform). We do streaming ingest and processing, managed Iceberg catalogs, and a distributed query engine—all built on R2 and the Cloudflare Edge. We're making it ridiculously easy for Cloudflare customers to build data lakes.
I'm looking for Rust engineers with experience working on databases, stream processing engines, and query engines. You'll get to work on incredibly cool tech on a huge scale.
Note: we are hiring for on-site roles in one of our engineering hubs, not hiring remote at this time.
If you're interested, shoot me an email (in profile) with subject HN and a brief description of your background and interest in the role.
One of the coolest roles we've had: experiment with cutting-edge AI tools to make talented engineers faster and more effective. Hands-on, experimental, operating at the frontier.
Fanvue is a fast-growing creator monetisation platform — AI-powered, creator-first (Series A, $100M+ ARR, triple-digit YoY growth), supporting hundreds of thousands of creators and millions of fans.
What you'll do: Define and roll out our AI-assisted dev stack (Cursor, Claude Code, etc.) across IDEs, PR workflows, and CI. Build MCP servers and AI-ready infra for context-aware code generation. Enable parallelised workflows, agent skills, and AI-assisted reviews. Establish best practices for safe, consistent AI-assisted coding. Track and report measurable impact. Evaluate emerging tools with clear success criteria.
Who you are: Strong software engineering background with TypeScript in production. Hands-on with AI coding tools (Cursor, Claude Code, Aider, Copilot). Experience with MCP servers. Solid LLM fundamentals (RAG, embeddings, fine-tuning). Comfortable with GitHub workflows and CI/CD. Autonomous, experimental, outcome-focused.
You'll thrive if you want to make engineers dramatically more effective, enjoy rapid experimentation, and own outcomes. You'll struggle if you prefer fixed roadmaps or need heavy direction.
Why Fanvue: Define responsible AI at scale, direct impact on velocity and quality, access to top AI tools, competitive salary, unlimited holiday, remote-first, flexible hours.
Apply: https://jobs.ashbyhq.com/fanvue.com/dcf1bcaf-a0af-4131-903c-...
Reference: Narcis Marincat
We’re an early-stage startup at the intersection of system design, cloud infra, and AI, enabling companies to adopt the latest in GenAI, including agentic frameworks.
Backed by Tier 1 VCs, we’ve recently launched publicly and are already partnering with 20+ global brands.
Help us build the foundations of a generational product.
[Watch our launch video](https://www.linkedin.com/posts/askdragonfly_build-the-right-...)
We're hiring for:
- Founding Product Engineer - London,UK | https://apply.workable.com/askdragonfly/j/11ADB3CB35/
- Founding Product Engineer - Estonia (remote) | https://apply.workable.com/askdragonfly/j/6CCC3B68D8/
Data teams waste countless hours wrestling with infrastructure instead of solving their businesses’ most critical problem: How to get more value from their data. The problem gets even worse with the AI revolution in flight. Tower changes that.
We're a Python-native serverless platform built on Apache Iceberg with powerful ETL and Lakehouse management tools. We integrate seamlessly with enterprise systems and make companies more nimble by letting them choose the best engine for each job while maintaining full data ownership.
We're focused on hiring developers that love the data ecosystem, are interested in really hard distributed systems problems, and working on dev tools.
Send a message to me, the CTO, at brad (at) tower.dev
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
Electric Twin builds simulations of real customer audiences, so teams can test decisions before shipping them — fast, safely, and at scale.
We’re a small, fast-growing 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.
We build software to run decarbonised electricity grids. Our platform controls hundreds of thousands of energy assets across the UK (and Europe!), monetising the demand flexibility we create in electricity markets.
We're growing fast, are backed by Accel, and are looking for exceptionally talented Software Engineers, Data Scientists and Product Owners to join us in decarbonising the energy grid.
I’m hiring for some (IMHO) really fun product manager roles on Cloudflare’s Developer Platform (workers.cloudflare.com) - Workers Runtime - Set vision for our V8 isolate based runtime that lets people deploy JS, TS, Rust and Python to the globe in seconds with great dev ex. - Containers - Help build our new containers platform into the best place for both agent Sandboxes and stateless global apps. - AI Agents - Define what Agents on Cloudflare look like: from our AgentsSDK, to Sandboxes, to MCP Servers, “Code Mode” (see our blog) and more.
We’re a really technical group, and tend to like product managers that can straddle the line between engineer and PM. You should be able to set high-level vision, understand architectural constraints, and be technical enough to really deeply understand our users (developers).
email: <my-hn-username>@cloudflare.com - Please add “HackerNews” to the subject line.
I'm Mark, the technical co-founder and CTO at Goody. We're building a gifting product that every business can use to recognize employees, retain customers, and accelerate sales. Despite being something everyone does, gifting is one of the areas of commerce yet to be disrupted, and we're working on building the best and most delightful product in this space.
Our product is used by Google, Stripe, Anthropic, Meta, NBCUniversal, Notion, and others, and we also offer a developer API for commerce. Tech stack is Ruby + React + TypeScript, though we're flexible on backend language if you know Python or Node.js better. All roles are full-stack.
We're coming off of a big year and planning for scale in 2026. We have a few new roles to accelerate our growth.
• Staff Software Engineer ($200–250K) — for those who ship at a startup pace and have a great eye for detail
• Senior Software Engineer, Customer Engineering ($150–200K) — if you like to hear a customer request in the morning and tell them it’s shipped in the afternoon. US and Canada only for this one
• Senior Software Engineer, Growth ($150–200K) — be the engineer who has the most direct impact on our growth
• Data Analyst ($80–140K) — build models to help power decision-making across our business (not a dev role but thought I'd include it)
We're looking for people who have great startup energy, want to win, and bring great vibes to our tight-knit team. Great time to join since our offsite in London is happening soon (we're US-based, this is our third international offsite).
My email is open for any questions: mark@ongoody.com