Senior Backend Engineer - Python & FastAPI (Remote)

IO in the United Kingdom is seeking an experienced Senior Backend Developer to design scalable backend services using Python and FastAPI. You will build RESTful APIs and microservices, and develop data pipelines supporting large-scale analytics.

Join an international engineering programme, work remotely for a contract starting September 2026 through December 2026 with potential extension. You will collaborate with cross-functional teams, apply Domain-Driven Design, and ensure secure, well-tested

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