Senior Backend Engineer (Platform Team)

We're looking for an excellent backend engineer with high agency who gets excited about the hardest technical parts of scaling a product: performance bottlenecks, risky migrations, reliability, infrastructure, and the tooling that helps engineers operate all of it safely. You will work across both backend code and infrastructure on shared technical problems whose impact cuts across our Product Engineering teams: scaling infrastructure, finding and fixing bottlenecks, improving CI and development workflows, and evolving how we handle on-call and incident response.

What you'll do

• Work on scalability bottlenecks, database performance, reliability, high-risk migrations, developer tooling, and production incidents
• Investigate and fix performance issues in Node.js applications and Postgres databases using profiling, query analysis, and production traces
• Own large-scale or high-risk infrastructure migrations, including planning failure modes, observability, rollout, and rollback
• Design and roll out improvements to our storage layer, egress infrastructure, alerting, and on-call systems
• Collaborate with Product Engineering teams to solve cross-cutting technical problems in our syncing and data infrastructure
• Empower individual Product Engineering teams to own and operate more of their own infrastructure

What you'll need

• Strong backend engineering fundamentals and experience building production services, APIs, and database-backed systems
• A methodical approach to debugging complex problems and finding their actual root cause
• The diligence to make high-risk changes safely, including thinking through failure modes, observability, rollout, and rollback
• The ability to own ambiguous technical problems and communicate clearly without needing close management
• Curiosity and the ability to learn unfamiliar parts of a system quickly
• Deep experience with TypeScript and Node.js
• Postgres performance work, including query analysis, indexing, or data-model design

Nice to have

• Profiling, benchmarking, tracing, or debugging production systems
• Ownership of large-scale or high-risk migrations
• Experience with distributed systems, internal tooling, or shared backend infrastructure
• Kubernetes, GCP, and Terraform
• Observability and incident response