C# Developer / Technical Lead .Net - FinTech

Client Server; Reigate; Hybrid; GBP 80,000 - 100,000; Full time

Benefits offered by this job

Parental leave

25 days holiday

Pension

Health & Life Assurance

Training & development

Social events

Job summary

Client Server in the UK is seeking a C# Developer / Technical Lead for a hybrid role based in Reigate. You will work on a flagship desktop platform, guiding three agile teams to deliver scalable features while maintaining security and performance.

You will shape architecture, collaborate with Product Owner and other teams, and advocate clean, reusable code and modern Microsoft engineering practices. Hybrid work includes WFH several days with regular in-person meetings in Reigate.

Qualifications

• Extensive experience with C# .Net Core backend in large scalable systems.
• Strong technical leadership with feature ownership.
• Proficient in event-driven architecture and modern Microsoft engineering practices.

Responsibilities

• Architect and implement new features for flagship desktop platform.
• Lead three Agile teams and ensure security, reliability and performance.
• Collaborate with Product Owner and other teams on design decisions.
• Maintain clean, reusable and maintainable code.

Skills

C# .Net Core

Technical leadership

Agile

Architecting

CI/CD

IaC

Azure

Event-driven architecture

OOP

Design patterns

Education

Degree in Computer Science

Tools

Azure DevOps

CI/CD tooling

Job description

C# Developer / Technical Lead (C# .Net Desktop Application) Reigate / WFH to £100k

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 £100k salary plus bonus (c20%)
• 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 C# Developer / Technical Lead you'll manage three Agile teams comprising around ten experienced software engineers, responsible for the flagship desktop insurance platform that handles 4 billion requests per month.

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.

Collaborate with the Product Owner and with other development teams, you'll 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