Applied Scientist, Ranking & Recommendations at Scale

Relay in London is seeking an Applied Scientist to lead Relay's recommender systems from research to production, applying reinforcement learning and large language models. You will own design, experimentation and deployment of scalable models that balance thousands of couriers' preferences with network constraints.

You'll collaborate with Operational Research and data teams to unite recommender models with optimisation, contribute to Relay's research culture, and help shape a product that