Java Backend Engineer (AI)

________________________________________________________________________________ About the Role: We are looking for a senior, polyglot full-stack engineer to build and own services across a large-scale supply-chain analytics and alerting platform. You will work end-to-end — from streaming data ingestion and BigQuery analytics, through Java/Spring Boot APIs, to a modern React/Next.js frontend — and contribute to an emerging agentic-AI capability. This is a hands-on role for someone who can operate as both an individual contributor and a lightweight architect, owning services outright and driving them to production. You will routinely move between four stacks (Java/Spring Boot, Apache Beam on GCP Dataflow, Python/FastAPI, and React/Next.js), so we value breadth and the ability to context-switch as much as depth in any one area. What You'll Do: Design, build, and own backend services in Java / Spring Boot, exposing REST and GraphQL APIs over BigQuery and MongoDB. Build and harden streamin...