Principal Backend Engineer

Principal Backend Engineer role at Extuitive, a Flagship Pioneering-backed startup building an agentic platform. The role involves architecting and scaling core backend systems including high-throughput services, data pipelines, and real-time agent clouds. The engineer will drive technical strategy, lead integrations with third-party providers, and influence architecture and best practices while working side-by-side with teammates to deliver best-in-class AI agent experiences.

Principal Backend Engineer with 8+ years backend engineering experience. Expertise in Node.js/TypeScript, Go, Python. Experience designing scalable distributed systems, microservices, event-driven architectures, third-party integrations, REST/GraphQL APIs, webhooks, SQL/NoSQL databases, data pipelines, cloud platforms (AWS, GCP), Docker, Kubernetes, CI/CD, observability. Comfortable in fast-paced environment with minimal oversight. Nice-to-have: early-stage startup experience, serverless/edge, M