Senior Backend Engineer - Sorting (all genders)

Shape how millions of users see products by blending ML model outputs with business logic (like campaign boosts or sponsored items) Build and own our high-throughput ranking engine ("Spotsetter") to ensure fast, deterministic, and fair product sorting Design reliable batch write pipelines that stream data from BigQuery straight into high-performance relational stores like Postgres and MySQL Develop low-latency serving APIs with Fastify and Node.js/TypeScript Work closely with data engineers, product managers, and commercial teams to make data-driven ranking decisions Architectural freedom: collaborate with our Tech Lead, bring in your own ideas, and keep our codebase clean