Full Stack Engineer C#.Net Agentic AI
Summary
Senior hands-on full-stack engineer at a global InsurTech business building cloud-based SaaS applications with C# .NET and JavaScript/TypeScript, using AI coding assistants and agentic AI workflows to accelerate delivery while owning architecture, quality, and security. Hybrid: 3 days from home, 2 days in the Reigate office.
Salary: £40,000 - 70,000 per year
Requirements:
- Strong full stack development experience with C# .Net and modern front end technologies such as JavaScript or TypeScript
- Experience building cloud-based SaaS applications
- Hands‑on experience using AI coding assistants and agentic development tools
- Ability to write effective specifications and prompts and confidently review AI‑generated code for quality, security, and maintainability
- Genuine interest in applying AI to accelerate software delivery while maintaining high engineering standards
- Strong understanding of software engineering best practices, including architecture, testing, code quality, and Agile delivery
- Analytical problem solver who thrives in fast‑paced, evolving environments
- Enjoys continuously improving products, processes, and engineering practices
Responsibilities:
- Design, develop, and enhance modern SaaS applications
- Work closely with Product Owners to shape new features from concept through to production
- Build scalable, high‑quality software
- Write automated tests
- Review code and contribute throughout the Agile development lifecycle
- Use AI to accelerate delivery while taking ownership of architecture, quality, security, and technical decision making
- Define technical solutions and write clear specifications
- Review AI‑generated code
- Orchestrate AI workflows
- Help establish engineering best practices across the team
Technologies:
- AI
- C#
- Cloud
- JavaScript
- Security
- TypeScript
- ASP.NET
- Agentic AI
- Fullstack
More:
We are a global InsurTech business producing game‑changing technology. We offer a senior, hands‑on role with a flexible hybrid working model: three days working from home and two days a week in our Reigate office for team meet‑ups and stakeholder meetings. Our package includes up to 95k salary plus bonus, enhanced parental leave, 25 days holiday plus buy days and your birthday off, pension, health care, life assurance, training and career development, social events, and a range of other perks. We are embracing AI‑native software engineering and evolving toward an agentic development environment that values ownership, quality, security, and technical excellence.
last updated 36 week of 2026