Senior Software Engineer

📋 Description Build the data platform for individualized fitness and learn user preferences. Ship backend for AI coach on equipment; adapt workouts in real time. Turn real-time telemetry into AI summaries, trends, progress stories. Deliver real-time, low-latency data across devices with high reliability. Modernize core data pipelines; design scalable, long-term architecture. 🎯 Requirements 5+ years building/operating production backend services. Node.js and TypeScript; REST/GraphQL API design; scalable services. Hands-on AI development; AI tooling and LLM integration. Data-intensive, event-driven systems: streaming, ingestion, time-series. AWS stack: Lambda/ECS/S3/RDS, Kafka/Kinesis; Terraform for infra. Reliability ownership: SLOs, monitoring, incident response, postmortems.