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Backend Software Engineer C# .Net - FinTech

Remote / Online - Candidates ideally in
Reigate, Surrey County, RH2, England, UK
Listing for: Client Server
Part Time, Remote/Work from Home position
Listed on 2026-06-13
Job specializations:
  • Software Development
    Backend Developer, Software Engineer, C# / Unity Developer, Cloud Engineer - Software
Salary/Wage Range or Industry Benchmark: 90000 GBP Yearly GBP 90000.00 YEAR
Job Description & How to Apply Below

Backend Software Engineer / Developer (C# .Net Desktop Application) Reigate / WFH to £90k

Do you have expertise with C# desktop development, working on complex scalable systems?

You could be progressing your career, in a senior, hands‑on leadership role working on complex and technically challenging systems with continual learning opportunities a global Fintech.

What's in it for you:
  • Up to £90k salary plus bonus (c 20%)
  • Hybrid working (3 days a week work from home)
  • Enhanced parental leave
  • 25 days holiday (plus buy days and your birthday off)
  • Pension (up to 10% contribution)
  • Health Care and Life Assurance
  • Training and career development
  • Social events and a range of other perks
Your role :

As a Backend Software Engineer you'll play a key role in architecting, designing and developing new features and enhancements whilst ensuring high levels of security, reliability, maintainability, usability and performance.

You'll collaborate with the Product Owner and with other development teams to input into design and technical choices and provide technical ownership an Agile environment that encourages close collaboration and continual improvement.

Location / WFH:

There's a flexible work from home hybrid model, you'll join colleagues in the Reigate office twice a week for team meet-ups and stakeholder meetings with the other three days work from home.

About you:
  • You have expertise with C# .Net Core backend software development, having worked on large, scalable systems with complexity
  • You have strong technical leadership experience (taking ownership of features, not managing people)
  • You are collaborative and pragmatic yet able to push back and influence senior engineers
  • You're an advocate of creating, clean, reusable and maintainable code and have a good knowledge of modern Microsoft software engineering best practices
  • You have a good knowledge of event driven architecture
  • You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patters, Algorithms
  • You have a good understanding of CI/CD and Infrastructure as Code (IaC)
  • You have an appreciation of Azure, SaaS, PaaS, microservices
  • You're likely to be degree educated in a relevant STEM discipline e.g. Computer Science with a good grasp of mathematics
Apply now

to find out more about this Backend Software Engineer / Developer (C# .Net Core) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

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