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September 17, 2026

C# Backend Engineer

Junior • On-site

1,144,000 - 1,248,000 USD/yr

London, United Kingdom

Quick Facts

  • Role: C# Backend Engineer

  • Focus: Secure backend services and core platform APIs using C#/.NET

Description

Design, build, and maintain backend services in C#/.NET for a platform. Implement secure, well-tested APIs and services aligned with architectural guidelines, including authentication and authorization using identity frameworks. Collaborate with architects, DevOps, and full-stack developers to deliver clean, documented interfaces and participate in code reviews, testing practices, and technical documentation.

Responsibilities

  • Design, build, and maintain backend services in C#/.NET

  • Implement secure, well-tested APIs and services per architectural guidelines

  • Work with authentication and authorization frameworks to secure application access

  • Collaborate with full stack developers on clean, documented backend-to-frontend interfaces

  • Participate in code reviews, testing practices, and maintain technical documentation

Requirements

  • Strong hands-on experience with C#/.NET

  • Experience with authorization/identity frameworks (e.g., OAuth, OIDC, RBAC)

  • Solid understanding of API design, testing, and secure coding practices

  • Experience in an Agile cross-functional team

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