Senior Backend Engineer - Ranking Systems (all genders)

About this job

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 You love digging into ranking problems, taking deep ownership of a product, and seeing your changes move real business…

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