At a Glance
- Tasks: Design and run large-scale experiments in reinforcement learning to drive AI advancements.
- Company: Join a mission-driven company focused on creating safe and beneficial AI systems.
- Benefits: Competitive salary, flexible hours, generous leave, and equity donation matching.
- Other info: Collaborative environment with opportunities for professional growth and societal impact.
- Why this job: Make a real impact in AI by solving complex challenges at the frontier of technology.
- Qualifications: Strong skills in reinforcement learning and experience with large-scale ML systems.
About the company
The company’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.
About the role
The company's RL Scaling Science team studies how reinforcement learning behaves as we scale it (across model size, compute, and task horizon) and turns that understanding into the training recipes behind our frontier models. As a Research Engineer on this team, you'll design and run large-scale experiments to understand and resolve bottlenecks, build the benchmarks that make long-horizon progress measurable, and ship validated findings directly into production training. This role lives at the boundary between research and engineering. The problems are open, the experiments run at frontier scale, and the path from a robust result to production is short.
Key responsibilities
- Design, run, and interpret large-scale RL experiments, reasoning rigorously about what the data does and doesn't show
- Investigate how RL improves as horizon, compute, and model size grow
- Build and maintain benchmarks for long-horizon RL so progress is measurable and reproducible
- Translate validated findings into production training recipes, exercising judgment about when a result is robust enough to ship
- Debug complex issues at the seam where research meets infrastructure – failures that only appear at scale
- Partner closely with adjacent RL teams across research and engineering and advance our overall RL stack
Minimum qualifications
- Strong empirical research skills in Reinforcement Learning, large-scale ML training, or a closely adjacent area
- Demonstrated ability to own large experiments end-to-end, from design through interpretation
- Proficiency in Python and experience working with large-scale or distributed ML systems
- Comfort operating at the research/systems boundary, including debugging where the two meet
- Care about the societal impacts of AI and responsible scaling
Preferred qualifications
- Published or shipped work in long-horizon RL or RL fundamentals
- Experience translating research findings into production training recipes
- Demonstrated large scale industry impact via RL interventions
- Experience working on frontier-scale training runs with long trajectories
Representative projects
- Design a benchmark suite for long-horizon RL that distinguishes genuine capability gains from artifacts of evaluation setup
- Take a promising experimental finding, stress-test it across model scales, and work with training teams to land it in a production recipe
- Investigate an unexpected scaling trend in an RL run and trace it to a root cause spanning algorithm, data, and infrastructure
Compensation
The annual compensation range for this role is £375,000 – £640,000 GBP.
Logistics
- 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.
- Visa sponsorship: We do sponsor visas. However, we aren’t able to successfully sponsor visas for every role and every candidate. If we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this.
Benefits
The company is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues.
Research Engineer, RL Scaling Science in London employer: United States Digital Space LLC
As a leading public benefit corporation based in San Francisco, we pride ourselves on fostering a collaborative and innovative work culture that empowers our employees to make meaningful contributions to the field of AI. With competitive compensation, generous benefits, and a commitment to employee growth, we provide a unique environment where research engineers can thrive while working on cutting-edge projects that have a positive societal impact.
Contact Details:
United States Digital Space LLC Recruitment Team
