> Markdown version of [/jobs/ext/3257016-research-engineer-machine-learning-rl-velocity](https://www.wearedevelopers.com/jobs/ext/3257016-research-engineer-machine-learning-rl-velocity). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Research Engineer, Machine Learning (RL Velocity) - **Company:** Anthropic's Mission - **Location:** UK - **Contract:** Permanent contract - **Skills:** Software Debugging, Distributed Systems, Tensorflow, Pytorch, Machine Learning Operations - **Published:** September 5, 2026 - **Apply:** https://startup.jobs/research-engineer-machine-learning-rl-velocity-anthropic-3-7943709 ## About the Role * Have strong software engineering fundamentals and a track record of building performant, reliable systems * Have worked on ML infrastructure, distributed systems, or research tooling * Care about enabling other people's work and find leverage through platforms rather than individual experiments * Are comfortable operating across the stack, from low-level performance work to RL algorithms * Have a bias toward shipping and iterating quickly, with a mix of high agency and low ego Strong candidates may also have * Experience with large-scale distributed training (RL, pre-training, or post-training) * Familiarity with JAX, PyTorch, or similar ML frameworks * A track record of operating at the edge of research and infra in a fast-moving environment, Minimum education: Bachelor's degree or an equivalent combination of education, training, and/or experience Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices. ## Description The RL Velocity team owns the efficiency and reliability of our RL Science stack - the infrastructure, tooling, and systems that let researchers iterate quickly on training runs. As a Research Engineer on the team, you'll build and improve the core platform that underpins how we do RL at Anthropic, removing bottlenecks that slow down research and making it easier for the broader org to ship better models faster. This is high-leverage work: small improvements to velocity compound across every researcher and every run., * Build and improve the RL training infrastructure that researchers depend on day-to-day * Identify and remove bottlenecks across the RL stack: debugging, profiling, and rearchitecting where needed * Partner closely with researchers and with adjacent engineering teams (inference, sandboxing, and many more) to understand pain points and ship tooling that makes them faster * Own the reliability and performance of research runs end-to-end * Contribute to design decisions that shape how Anthropic does RL at scale ## Related Videos - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Photonic Computing: Programming a New Class of AI Accelerators (incl. Live Coding)](https://www.wearedevelopers.com/videos/100196-photonic-computing-programming-a-new-class-of-ai-accelerators-incl-live-coding) - [Machine learning in the browser with TensorFlowjs](https://www.wearedevelopers.com/videos/155-machine-learning-in-the-browser-with-tensorflowjs) - [Using AI Without Losing Your Skills](https://www.wearedevelopers.com/videos/2045-using-ai-without-losing-your-skills) - [Developing an AI.SDK](https://www.wearedevelopers.com/videos/198-developing-an-ai-sdk) - [Agentic employees in world's most downloaded FinTech app](https://www.wearedevelopers.com/videos/100123-agentic-employees-in-world-s-most-downloaded-fintech-app) ## Related Articles - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [What Are Large Language Models?](https://www.wearedevelopers.com/magazine/304-what-are-large-language-models) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)