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# Lead C# Engineer

- **Company:** WTW
- **Location:** London, United Kingdom
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Automation of Tests, Unit Testing, Microsoft Azure, Software Bug Management, C Sharp (Programming Language), Cloud Computing, Code Coverage, Software Quality, Continuous Integration, Software Debugging, Software Design Patterns, Design of User Interfaces, Graphical User Interface Testing, Windows Presentation Foundation, Object-Oriented Software Development, Scrum Methodology, Software Architecture, Software Tools, Mstest, Software Engineering, Software Systems, Windows Forms, Application Enhancement Tool, GitHub Copilot, Technical Debt, Git, System-level Testing, Solid Principles, Information Technology, Extreme Programming, Software Version Control
- **Published:** November 7, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/lead-c-engineer/55227857

## About the Role

What you'll bring

The essential skills/experience for this position are:

Proficient in software development using C# .NET

Experience with the full software development lifecycle in a commercial/production environment: requirements capture and analysis, estimation, detailed software design, implementation, unit and system-level testing, installation and deployment, maintenance

Experience with software engineering best practices: object-oriented design and implementation, design patterns, SOLID principles, Agile and Extreme Programming methodologies

Experience with software development tools: IDE's, version control, test automation, continuous integration, defect and backlog management systems

Ability to coordinate day-to-day development and bug fixing activities

Ability to design high-performance, scalable and extensible software architectures which are also easy to test, debug and maintain

GUI design/implementation, knowledge of standards and frameworks such as WPF or WinForms

Appreciation of current and emerging technologies along with their potential benefits and limitations

Azure DevOps and Git

Experience of unit and GUI test automation frameworks such as MS Test

Azure and Cloud Technologies

Passion for maths, statistics and complex algorithms

General knowledge of the Insurance Industry

Degree-educated with Computer Science, Engineering, Mathematics or relevant discipline

Other highly desirable, but not essential skills are:

Passion for leveraging AI-powered tools such as GitHub Copilot to accelerate development, improve code quality, and enhance productivity.

## Description

As a Lead Software Engineer, you will work as part of a highly-skilled and close-knit development team following Scrum methodologies to develop market-leading insurance pricing solutions. This is a varied and challenging opportunity where you will play a key role creating new product features and enhancing existing code, whilst ensuring the product continues to meet high levels of reliability, maintainability, usability and performance.

The Role:

Working with the Product Owner to define, refine and deliver the product backlog

Designing and documenting software solutions meeting functional and non-functional requirements

Implementing and refactoring product code (C#), following best practices for maintainability, testability and performance

Implementing unit tests, developing test frameworks and associated automated test cases

Reviewing and debugging code to identify defects, performance bottlenecks or technical debt

Working closely with test engineers to guarantee suitable test coverage, identifying and executing manual tests if necessary

Participating in sprint planning meetings, daily stand-ups and sprint retrospectives, striving to continuously improve the team velocity, its processes and engineering practices

Mentoring junior members of the team and taking a lead role for some of the above activities