Full Stack Developer

Full Stack Developer (C#/.NET) - Tunbridge Wells
About the company

An established, independent e-commerce business in Tunbridge Wells that has grown year on year. They sell business supplies online to small and medium-sized businesses, from office and catering products to janitorial supplies and furniture.

They build and run most of their own technology rather than relying on off-the-shelf packages. That gives the tech team a lot of control over how things work and a direct line to the people using what they build.

The role

You'll join a small, experienced tech team of two to three developers. You'll work across their bespoke e-commerce platform and wider business systems: the webstore, internal operations tools, CRM, merchandising systems and third-party integrations.

The work covers new development, improving existing systems, integrations, support and some data work. You'll work with colleagues to understand business problems, refine requirements, design practical solutions and deliver the changes.

The team already does nearly all of its development with Claude Code. You'll spend less time writing code by hand and more time understanding requirements, designing solutions and writing clear specs for AI agents to implement. You'll guide and review the agents' work and stay responsible for architecture, code quality, testing and the final result.

Many of the systems have grown over years, so you'll need to be comfortable getting to grips with existing behaviour and business rules. They value simple, maintainable solutions and sensible trade-offs between quality, risk, time and business needs.

Core skills

• Strong commercial experience with C#, .NET / .NET Framework and ASP.NET MVC
• SQL Server, LINQ and an ORM such as Entity Framework
• JavaScript, HTML and CSS
• Unit and integration testing (MSTest, Selenium or similar)
• Building and maintaining web applications end to end, plus API integrations
• Git and GitHub workflows
• Hands-on use of AI coding agents such as Claude Code, Copilot or Cursor (at work or on your own projects)

Useful experience

• React, Angular or a similar client-side framework
• E-commerce
• IIS and Windows Server, CI/CD and PowerShell
• Data analysis and reporting with tools such as Power BI

What they're looking for

• Solid real-world experience building, maintaining and supporting production software
• Good engineering judgement and strong problem solving
• Able to turn business requirements into practical designs, clear specs and manageable tasks for AI agents
• Keen on AI-assisted development and wants to keep pushing it further
• Interested in why something is being built, not just how
• A collaborative team player who communicates clearly, shares knowledge and values feedback
• Looking for somewhere to settle and make a real impact in a small team

Package

• £50,000 to £70,000 depending on experience
• Annual bonus based on company performance
• Company pension
• 23 days holiday plus bank holidays, rising with length of service
• Hybrid: 3 days a week in the Tunbridge Wells office, flexible on which days
• Regular socials and a summer party

Interview process

1. Teams call with the hiring manager
2. In person in Tunbridge Wells: a whiteboarding session and pairing with Claude Code on their codebase