Senior Full Stack .Net Developer
Summary
Contract senior full-stack .NET developer (outside IR35) working remotely from the UK on an established SaaS platform: building C#/.NET/ASP.NET Core REST APIs and a Vue 3/TypeScript web app, with automated testing, GitHub, and AI-assisted development tools; regular weekly overlap with the New Zealand team required.
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.
The RoleYou'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 / <script setup>
- 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.
What We're Looking ForStrong 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.
Important – New Zealand Team OverlapThe 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.