Posted by whoishiring 7 days ago
Ask HN: Who is hiring? (April 2026)
Please only post if you personally are part of the hiring company—no recruiting firms or job boards. One post per company. If it isn't a household name, explain what your company does.
Please only post if you are actively filling a position and are committed to replying to applicants.
Commenters: please don't reply to job posts to complain about something. It's off topic here.
Readers: please only email if you are personally interested in the job.
Searchers: try https://nthesis.ai/public/hn-who-is-hiring, http://nchelluri.github.io/hnjobs/, https://hnjobs.emilburzo.com, or this (unofficial) Chrome extension: https://chromewebstore.google.com/detail/hn-hiring-pro/mpfal....
Don't miss this other fine thread: Who wants to be hired? https://news.ycombinator.com/item?id=47601858
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
Eagle is building Pixar for the built environment.
Backed by Lightspeed Venture Partners, we acquire and transform civil, structural, and MEP engineering firms with applied AI.
We believe that the world needs more engineers to work on problems in the physical world, and that's why we're going on this journey. We exist so that our people can express creativity and joy in serving the built world.
In 10 years, our ambition is to be the most valuable, talent-dense engineering firm in the U.S.
Apply here: https://jobs.ashbyhq.com/eagle/ef7cb145-536a-4ace-b6de-c8928...
Looking for a k8s, AWS, Helm, Terraform, DevOps nerd to help out the NYC team. We were recently acquired by Nebius, if you love infra reach out to me: Parakh.Jaggi@tavily.com
TYPE: full-time
LOCATION: Amsterdam
REMOTE: Optional, Based in the Netherlands is preferred
VISA: No
DESCRIPTION: Polars is the company founded from the Polars OSS project. The company is building a distributed query engine and managed data platform that can run the full polars API with different scaling strategies. (Almost) Our whole tech stack is in Rust and we are building the platform from scratch.
Rust Software Engineer - Performance: https://hiring.pola.rs/o/performance
Rust Software Engineer - Query Engines: https://hiring.pola.rs/o/query-engine
CONTACT: hr@polars.tech
Cloudflare is building across the entire AI stack. Here are some exciting things that we have launched recently:
- Release Cog v0.17: https://github.com/replicate/cog/releases/tag/v0.17.0
- Dynamic Worker Sandboxes: https://blog.cloudflare.com/dynamic-workers/
- Kimi K2.5: https://blog.cloudflare.com/workers-ai-large-models/
- Code Mode MCP Servers: https://blog.cloudflare.com/code-mode/
- Agents SDK: https://blog.cloudflare.com/building-agents-with-openai-and-...
We are looking for systems and ML engineers to help build our edge inference platform:
- Senior Systems Engineer, Workers AI - https://job-boards.greenhouse.io/cloudflare/jobs/7764827?gh_...
- Senior / Principal Machine Learning Engineer, Workers AI- https://job-boards.greenhouse.io/cloudflare/jobs/6297179?gh_...
AI health coaching, personalized, data-driven, built on real biomarkers (DNA, wearables, labs, food logs). Product is live. Stack: Python/FastAPI, PostgreSQL, Fitbit + Apple Health integrations, LLM pipelines. Infrastructure needs modernization — no containers yet. That's where you come in.
What makes this different: we run an autonomous AI engineering team (Claude Code agents) that handles feature builds and deploys. You're not writing CRUD. You own architecture, infrastructure, and the path to scale.
First priority: containerize, CI/CD, HIPAA-compliant AWS migration.
Must have: Python, Docker in production, PostgreSQL, ops mindset. Health tech or regulated industry experience is a plus. You've built and scaled something real.
shane@mysignalwell.com
We’re open-source, developer-first, and focused on making data movement radically simpler across both our Platform and Applications layers.
We’re hiring for:
Senior Systems Engineer — Capture & Materializations Design and build high-performance connectors that move data in and out of Estuary in real time. Work across APIs, databases, and streaming systems to ensure correctness, reliability, and scalability. This role is deeply systems-oriented, with a focus on data plane execution. Go and Rust are core to our stack.
Senior Systems Engineer — Control & Data Plane Own core infrastructure that orchestrates and powers Estuary’s runtime — from control plane services to distributed data processing systems. Tackle challenges in scaling, fault tolerance, and performance across a globally distributed system. Strong backend fundamentals required; Go and Rust experience preferred.
Solutions Engineer Work with the founding team to help customers use Estuary effectively. Collaborate closely with engineering and product, shape how users integrate real-time data, and feed insights back into product development.
Product Manager Own product areas end-to-end, working closely with engineering and design to shape the roadmap and deliver a great developer experience. Engage with users, translate real-world use cases into product decisions, and help define how modern data infrastructure should feel to build with.
What we’re looking for: Engineers who care about building reliable, maintainable systems and enjoy working with complex APIs and data flows. We value curiosity, clear communication, and a willingness to learn.
Bonus points for experience with CDC tools, open source contributions, or fast-paced startups.
To apply: Email your resume to careers@estuary.dev
Senior engineer to step into a ~30k LOC system (~300 files) and help shape it properly.
Production-style system with real complexity. Interdependent modules, async flows, external integrations.
Stack: Python/FastAPI backend, Next.js frontend, early-stage routing/AI components.
Expectations:
- quickly understand an existing codebase
- trace data flow across modules/services
- identify structural issues and bottlenecks
- make pragmatic improvements without overengineering
Starts with a deep dive and direction, with room to stay involved and build it out.
AU-based only (R&D constraints).
Email: mattahbla+hn@gmail.com
Akur8 builds the OS for insurance pricing - our SaaS platform helps 320+ insurers worldwide model risk up to 10x faster using transparent ML.
We're hiring an AI Engineer to join our team. We're building systems that transform tens of millions of messy, unstructured regulatory documents into actionable intelligence. If evals, agentic fine-tuning, and agent orchestration are the problems that light you up - not just things you've read about but things you actually have opinions on - we'd love to talk.
The team is small and talent-dense. You'll ship to production, talk to real customers, and have genuine ownership over what you build.
Come join us at https://jobs.ashbyhq.com/akur8. Mention in your application that you saw our post on HN.