Founding RL Engineer

About the Role Join an early-stage AI team building reinforcement learning systems to help AI agents handle complex work. You will own the full loop from environment design through training and evaluation, while helping shape the team's technical direction. What You'll Do Design and build reinforcement learning environments, reward functions, and training pipelines. Train and fine-tune models using methods such as PPO, GRPO, DPO, RLHF, and RLAIF. Build evaluation frameworks to measure model and…