products Capturing decisions, model outputs, feedback, cost, latency, and outcome signals reliably Designing backend systems that support continuous learning from production data Building Rust and Python services across serving, workers, training workflows, and internal tooling Working with Postgres, Redis, queues/streams, migrations, and event-driven workflows Making reliability, observability … deployment safety part of the product from the beginning Core responsibilities Write production-grade Rust and Python services Design clean domain boundaries around requests, functions, variants, metrics, rewards, and feedback Build APIs and data flows that keep serving, reporting, and learning paths consistent Own database schemas, migrations, background jobs ...