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Barclays Logo Barclays · IT - Software Development

Senior C# Developer

United Kingdom, London · Job Posted January 16, 2026
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Job Description

Join Barclays as a Senior C# Developer, where you will be leading the design, development, and support of low-latency pricing and execution platforms used by front-office trading and sales teams. The successful candidate will work closely with quantitative teams, traders, and technology stakeholders to deliver high-performance, resilient, and scalable systems.

Job Responsibility

  • Development and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance.
  • Cross-functional collaboration with product managers, designers, and other engineers to define software requirements, devise solution strategies, and ensure seamless integration and alignment with business objectives.
  • Collaboration with peers, participate in code reviews, and promote a culture of code quality and knowledge sharing.
  • Stay informed of industry technology trends and innovations and actively contribute to the organization’s technology communities to foster a culture of technical excellence and growth.
  • Adherence to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions.
  • Implementation of effective unit testing practices to ensure proper code design, readability, and reliability.

Requirements

  • .Net 8 coding experience
  • Experience using containers (Kubernetes)
  • Excellent communication skills – written and talking to Tech Teams and Stakeholders
  • Gitlab

Nice to have

  • Working on low latency pricing and execution systems
  • Working knowledge of resilient software design
  • Solace messaging

What we offer

  • Competitive holiday allowance
  • Life assurance
  • Private medical care
  • Pension contribution
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