Senior Full Stack .Net Developer

C# | .NET | ASP.NET Core | Vue 3 | TypeScript | REST APIs

£400–£450 per day | Outside IR35 | Remote UK | Contract

We’re looking for an experienced Senior Full Stack .NET Developer / .NET Contractor to join a global SaaS engineering environment, working across backend services and a modern web application.

This is a UK-based remote contract working with an international engineering team across the UK, New Zealand, US and Canada.

You MUST be UK based to be considered.

You'll be hands-on across C#, .NET, ASP.NET Core Web APIs, Vue 3 and TypeScript, developing new functionality and enhancing an established SaaS platform.

You'll work across:

• C# / .NET / ASP.NET Core / .NET 5+
• Vue 3 / TypeScript / Composition API /
• REST APIs & backend services
• Automated testing & maintainable code
• GitHub & modern development practices
• AI-assisted development tools such as Claude Code

You'll be joining an established distributed engineering team, so strong remote working, written communication and asynchronous collaboration skills are important.

Strong commercial C# / .NET and ASP.NET Core development experience is essential, combined with genuine hands-on Vue 3 and TypeScript experience.

You'll need to be comfortable working across an existing codebase, writing automated tests alongside production code and using modern AI coding/development tools as part of your workflow.

Experience with PHP/Laravel, Microsoft Graph, Microsoft 365 integrations, Google Calendar APIs or Google Workspace would be a bonus.

The role is flexible and remote, but you'll need some regular weekly overlap with the New Zealand engineering team, ideally during their 8:00–11:00am NZ working window. Exact days can be agreed.

£400–£450 per day | Outside IR35 | Remote UK

If you're a Senior .NET Developer, Full Stack .NET Developer, C# Developer, .NET Contractor or Senior Software Engineer with strong C#/.NET + Vue 3/TypeScript experience, apply today.

UK-based contractors only.

Key Skills: C#, .NET, ASP.NET Core, .NET 5+, Web API, REST API, Vue 3, Vue.js, TypeScript, Composition API, Full Stack Development, Automated Testing, GitHub, SaaS, AI Coding, Claude Code, PHP, Laravel, Microsoft Graph, Google APIs.