Senior C# Developer Desktop Application

Salary: £90,000 - 90,000 per year

Requirements:

• We need expertise in C# .NET Core backend software development on large, scalable, complex systems.
• We need strong technical leadership experience, taking ownership of features rather than managing people.
• We need a collaborative and pragmatic approach, with the ability to push back and influence senior engineers.
• We need experience writing clean, reusable, maintainable code and knowledge of modern Microsoft software engineering best practices.
• We need a good understanding of event-driven architecture.
• We need a thorough understanding of computer science fundamentals, including OOP, data structures, design patterns, and algorithms.
• We need a good understanding of CI/CD and Infrastructure as Code (IaC).
• We need an appreciation of Azure, SaaS, PaaS, and microservices.
• We would prefer a degree in a relevant STEM discipline such as Computer Science, with a good grasp of mathematics.

Responsibilities:

• We want you to join our Agile team working on our flagship desktop insurance platform.
• We want you to help handle a platform that processes 4 billion requests per month.
• We want you to architect, design, and develop new features and enhancements.
• We want you to ensure high levels of security, reliability, maintainability, usability, and performance.
• We want you to collaborate with the Product Owner and other development teams on design and technical choices.
• We want you to provide technical ownership in an Agile environment that encourages close collaboration and continual improvement.

Technologies:

• Architect
• Azure
• Backend
• C#
• CI/CD
• OOP
• PaaS
• Product Owner
• Security
• microservices
• ASP.NET
• Cloud

More:

We are a global Fintech offering a senior, hands-on leadership role on complex and technically challenging systems with continual learning opportunities. We offer a competitive salary of up to £90k plus bonus of around 20%, hybrid working with three days from home and two days in our Reigate office, enhanced parental leave, 25 days holiday plus buy days and your birthday off, pension contributions up to 10%, health care, life assurance, training and career development, social events, and other perks.

last updated 31 week of 2026