4 full stack developer jobs found in London

Full Stack Developer - Contract Position - HIRING ASAP Location: London, 3 days in office per week & 2 days remote per week Start Date: ASAP Duration: 6-9 months (extension after) Daily Rate: £300 - £340 per day outside IR35 Key Responsibilities Delivery focused development support Join the team on a freelance basis to provide additional senior level development capacity when required Take on more complex or time sensitive development tasks within existing systems, working within established patterns and architectures Deliver well scoped features, integrations, and campaign builds without introducing unnecessary changes to core platform architecture Live support & problem solving Provide experienced development support during campaigns, helping diagnose and resolve issues quickly and pragmatically Assist with troubleshooting production issues, identifying root causes, and implementing safe fixes under the direction of the permanent team Support QA...

🚀 Contract Full-Stack JavaScript Developer 📍 Location: 3 days per week onsite – Central London Office 📆 Duration: Initial 8 weeks + Extensions 💼 IR35 Status: Outside IR35 💰 Rate: £350p/d - £400p/d Opus is partnering with a design‑led digital agency to hire a Contract Full-Stack JavaScript Developer with a strong frontend bias. You’ll join a small, high‑calibre team focused on building slick, award‑winning digital products, taking products from 0–1 and to market . This is a hands‑on role for someone who enjoys clean UI, modern frontend tooling, and close collaboration with designers. They’re not looking for “super experienced developers, instead, smart, thoughtful engineers who ship quickly, communicate well, and bring ideas to the table. 🧠 What You’ll Be Working On Frontend‑heavy full‑stack feature development Building high‑quality, design‑led user interfaces Translating complex requirements into clean, scalable code Working...

Contract .Net Developer - Insurance claims system | £400 Per Day (Outside IR35) We're working with a leading specialist insurer driving a massive digital transformation on this exciting opportunity. This is a high-impact role where you will help overhaul a modern claims automation platform using the latest .NET ecosystems. You will be at the core of a major integration programme, architecting scalable microservices and robust APIs that handle critical insurance workflows at scale. The Role Design and build high-performance backend solutions using .NET Core and .NET 5+ for a flagship claims platform. Architect and deploy scalable microservices that integrate seamlessly across a complex multi-system landscape. Take full ownership of the development lifecycle, from designing secure APIs to implementing rigorous unit testing. Collaborative with cross-functional delivery teams to ensure backend solutions meet high-availability and performance standards. Contribute to...

.NET Developer, CMS, Sitecore, Optimizely, Umbraco - Remote (Tech stack: .NET Developer, CMS, Sitecore, Optimizely, Umbraco, .NET 10.0, C# 14, Angular 21, Agile, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is a leading digital agency powerhouse, delivering transformative online experiences for some of the most recognised brands across Europe. Renowned for blending creativity with cutting-edge technology, they have built an unrivalled reputation for crafting innovative, scalable .NET-driven digital platforms that engage millions of users daily. As part of their continued growth and a surge in exciting Greenfield digital transformation projects, they are looking to recruit a talented .NET Developer to join their award-winning development team. This is an opportunity to work in a fast-paced agency environment where no two projects are the same-ranging from enterprise CMS-driven websites to complex, high-traffic digital ecosystems. Working in...