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# Backend Software Engineer C# .Net AWS

- **Company:** Client Server
- **Location:** Bracknell, UK (Remote available)
- **Experience:** Expert
- **Salary:** £70,000.0 - £85,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Automation of Tests, Cloud Computing, Programming Tools, Software Architecture, Standard Sql, SQL Databases, GitHub Copilot, Backend, Event Driven Architecture, Restful APIs, Microservices
- **Published:** September 11, 2026
- **Apply:** https://www.client-server.com//job/backend-software-engineer-c-net-aws-4/apply

## About the Role

* You have strong C# .Net Core backend development experience
 * You have experience building production APIs
 * You have good SQL skills
 * You have experience with system design, software architecture, microservices and event driven systems
 * You're comfortable working with cloud infrastructure in production; AWS preferred
 * You have experience mentoring engineers and sharing technical knowledge
 * You have hands-on experience using AI coding / development tools such as Claude or Copilot
 * Finance / payments experience is desirable, but not essential

## Description

Backend Software Engineer / Developer (C# .Net API SQL) Bracknell / WFH to £85k

Opportunity for Senior Backend Engineer to join a major rebuild of a leading international payments platform, working within the Corporate Payments division.

As a Backend Software Engineer you'll join a small, autonomous engineering team of around 4-6, including QA and a Team Lead, helping to modernise backend services and build the next generation of the platform. This is a hands-on role with genuine technical ownership, where you'll lead the delivery of new capabilities and contribute to the evolution of the underlying architecture.

Your role:

 * Design and implement robust, scalable APIs and backend services using C# .Net Core
 * Modernise existing services and contribute to the rebuild of the Corporate Payments platform
 * Lead delivery of new features and technical projects from design through to production
 * Apply system design and architectural principles, including microservices and event driven architecture
 * Design and optimise SQL databases and queries
 * Write, maintain and improve automated tests, ensuring high standards of quality
 * Work with AWS or other cloud platforms in production environments
 * Leverage AI development tools including Claude and GitHub Copilot to improve engineering productivity
 * Mentor other engineers and contribute to technical best practice


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