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Senior Back End Developer

Robert Half | City of London, United Kingdom | Posted June 17, 2026

Position Overview


Robert Half have partnered with a high growth sports manufacturing organisation based in London who are looking to engage an experienced Senior Backend Engineer to support the evolution of a live, transaction‑driven platform as it scales internationally.

This is an initial 6‑month, Inside IR35 contract, focused on building and scaling core backend systems that support global commerce, real‑time interactions, and the integration of newly acquired platform capabilities.

Responsibilities:

  • Owning and evolving backend services within a high‑scale, real‑time environment
  • Designing and scaling systems to support multi‑currency and cross‑border transactions
  • Building and extending a shared transaction and ledger layer used across multiple platforms
  • Supporting the integration of newly acquired products and capabilities into the core platform
  • Designing and exposing APIs for frontend, mobile, and third‑party platform use cases

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