Full Stack Engineer C# .Net Agentic AI

Client Server; Reigate; Hybrid; GBP 57,000 - 95,000; Full time

Benefits offered by this job

Enhanced parental leave

25 days holiday

Pension

Health Care

Life Assurance

Training and career development

Social events

Job summary

Client Server in the United Kingdom seeks a Full Stack Engineer to own front-to-back development in C#/.NET with an AI-first mindset. Based in Reigate with a hybrid WFH model, you will shape features from concept to production, building scalable SaaS applications and ensuring quality through automated tests and code reviews.

You will embrace agentic AI development, define technical solutions, and collaborate with Product Owners to accelerate delivery while upholding architecture, security and

Qualifications

• Hands-on experience using AI coding assistants and agentic development tools.
• Ability to write effective specifications and prompts for AI-driven code.
• Review AI generated code for quality, security and maintainability.
• Strong understanding of architecture, testing, code quality and Agile delivery.

Responsibilities

• Design, develop and enhance modern SaaS applications.
• Write automated tests and review code for quality and security.
• Collaborate with Product Owners to shape new features from concept to production.
• Define architectures and engineering best practices across the team.

Skills

AI tooling experience

Agentic development

Software engineering

Agile delivery

Code review & quality

Tools

C#/.NET

SQL

Azure/AWS

Job description

Full Stack Engineer (C# .Net Agentic AI) Reigate / WFH to £95k

Are you a technologist Full Stack Engineer with an AI first mindset?

You could be progressing your career in a senior, hands-on role at a global InsurTech business that is producing game changing technology.

As a Full Stack Engineer you'll design, develop and enhance modern SaaS applications, working closely with Product Owners to shape new features from concept through to production. You'll build scalable, high-quality software, write automated tests, review code and contribute throughout the Agile development lifecycle.

The business is embracing AI native software engineering, rather than simply using AI to generate code, you'll work in an evolving agentic development environment, using AI to accelerate delivery while taking ownership of architecture, quality, security and technical decision making.

As the platform evolves, you'll spend more time defining technical solutions, writing clear specifications, reviewing AI generated code, orchestrating AI workflows and helping establish engineering best practices across the team.

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 hands-on experience using AI coding assistants and agentic development tools, with the ability to write effective specifications and prompts and confidently review AI generated code for quality, security and maintainability
• You have a genuine interest in applying AI to accelerate software delivery while maintaining high engineering standards
• You have a strong understanding of software engineering best practices, including architecture, testing, code quality and Agile delivery
• You are an analytical problem solver who thrives in fast-paced, evolving environments and enjoys continuously improving products, processes and engineering practices

What's in it for you:

• Up to £95k salary plus bonus
• Hybrid working (3 days a week work from home)
• Enhanced parental leave
• 25 days holiday (plus buy days and your birthday off)
• Pension, Health Care and Life Assurance
• Training and career development
• Social events and a range of other perks