Founding RL Researcher: Long-Horizon AI Environments

Built Different seeks a Founding RL Researcher to shape the research agenda for long‑horizon RL using real expert behavioural data, with ownership from day one and close collaboration with the founding engineering team. Remote-friendly with a London/Paris hybrid preference; EU-based candidates are welcome.

Compensation includes £300,000 plus founding equity and early access to frontier AI labs. If you move fast, have frontier RL experience, and want to define the science rather than build on