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3 front end app developer jobs found

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front end app developer £300 - £400
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Outside Spy
Apr 22, 2026
Duration not stated
Kotlin/Java Developer at 83zero Ltd, Sheffield, £275 to £300 per Day
£275 - £300 per day
Outside Spy Sheffield, UK
Kotlin / Java Developer (Contract) - Outside IR35 📍 Sheffield (Grosvenor House) | Hybrid (2 days onsite) 💼 Full-time Contract 💰 £300 per day (Outside IR35) 🚀 The Opportunity We're seeking a proactive and skilled Kotlin / Java Developer to join a cutting-edge Developer Experience (DevX) Standards & Controls team within a global technology environment. You'll be working on modern, microservices-based applications and APIs that help development teams manage and demonstrate compliance across software delivery. With multiple applications and PoCs in play, this role offers variety, ownership, and the chance to work with modern engineering practices. 💻 What You'll Be Doing Collaborate with developers, testers, and stakeholders to build and run high-quality products Design, develop, and implement backend features aligned to business priorities Contribute to lightweight front-end components using a simple UI framework Build and maintain APIs and microservices Work...
Outside Spy
Apr 20, 2026
Duration not stated
Contract .Net Developer – Insurance claims system at hireful, London, £350 to £400 per Day
£350 - £400 per day
Outside Spy London, UK
Join this leading Insurance company as an Interim Back-End .NET Developer and play a key role in transforming a modern, high-impact claims automation platform. This is an exciting opportunity to work at the heart of a major claims’ integration programme, designing and building scalable APIs and microservices using the latest .NET technologies, including the likes of .NET Core, .NET 5+. Working within a collaborative and fast-paced delivery environment, you will develop robust backend solutions that integrate seamlessly across multiple systems, You’ll take ownership of designing, developing, and unit testing high-quality code, ensuring solutions are secure, performant, and aligned with best practice coding standards. This role is primarily backend-focused, with some opportunity to contribute minor front-end enhancements where required. Role: Senior .Net Backend Developer, Senior .Net Developer, .Net Core Developer, Software Engineer, Contract .Net Developer, Lead .Net Developer...
Outside Spy
Apr 20, 2026
Duration not stated
Contract .Net Developer – Insurance claims system at Hireful, Central London, £400 per day
£400 per day
Outside Spy Central London, London WC2N 5DU, UK
Join this leading Insurance company as an Interim Back-End .NET Developer and play a key role in transforming a modern, high-impact claims automation platform. This is an exciting opportunity to work at the heart of a major claims’ integration programme, designing and building scalable APIs and microservices using the latest .NET technologies, including the likes of .NET Core, .NET 5+. Working within a collaborative and fast-paced delivery environment, you will develop robust backend solutions that integrate seamlessly across multiple systems, You’ll take ownership of designing, developing, and unit testing high-quality code, ensuring solutions are secure, performant, and aligned with best practice coding standards. This role is primarily backend-focused, with some opportunity to contribute minor front-end enhancements where required. Role: Senior .Net Backend Developer, Senior .Net Developer, .Net Core Developer, Software Engineer, Contract .Net Developer, Lead .Net Developer...
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