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7 front end app developer jobs found

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front end app developer
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Outside Spy
Apr 28, 2026
6 Months or more
Engineering Manager (Front-End) at Mindera, London Paddington, 6 Months, £Contract Rate (Outside IR35)
Outside Spy Paddington, London, UK
Description We are seeking a passionate Software Engineering Manager with a strong background in modern frontend engineering, particularly React, Next.js, and TypeScript, to provide technical leadership and operate with excellence. Creative, curious, and confident, you will be an integral part of our empowered, self-managing, multi-disciplinary engineering teams -designing, building, releasing, and maintaining high-quality digital products. You will play a key role in shaping and growing a best-in-class frontend engineering capability, establishing modern development practices and building scalable, high-performance web applications. This is an initial 6-month contract (outside IR35) requiring 3 days per week onsite in Paddington, London. Key Accountabilities Team Leadership Build, mentor, and lead a high-performing team of frontend engineers specialising in React, Next.js, and TypeScript. Foster a culture of collaboration, technical excellence, and...
Outside Spy
Apr 28, 2026
6 Months or more
Engineering Manager (Front-end) at Mindera, London/Hybrid, £Contract Rate Outside IR35
Outside Spy Hybrid (Paddington, London, UK)
Description We are seeking a passionate  Software Engineering Manager  with a strong background in  modern frontend engineering , particularly  React, Next.js, and TypeScript , to provide technical leadership and operate with excellence. Creative, curious, and confident, you will be an integral part of our empowered, self-managing, multi-disciplinary engineering teams—designing, building, releasing, and maintaining high-quality digital products. You will play a key role in shaping and growing a  best-in-class frontend engineering capability , establishing modern development practices and building scalable, high-performance web applications. This is an  initial 6-month contract (outside IR35)  requiring  3 days per week onsite in Paddington, London . Requirements Key Accountabilities Team Leadership Build, mentor, and lead a high-performing team of  frontend engineers specialising in React, Next.js, and...
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
Full Stack Developer -SQL at Netrolynx AI, United Kingdom, £Contract Rate
Outside Spy United Kingdom
About The Company Hays is a global leader in recruitment and workforce solutions, renowned for connecting talented professionals with leading organizations across various industries. With a strong presence in over 30 countries, Hays is committed to delivering innovative staffing solutions that meet the evolving needs of the modern workforce. The company prides itself on its deep industry expertise, extensive network, and dedication to fostering long-term relationships with clients and candidates alike. Hays’s core values emphasize integrity, collaboration, and excellence, making it a trusted partner for both employers and job seekers seeking to advance their careers. About The Role We are seeking an experienced Full Stack C# Web Developer with strong React expertise to join our team on a contractual basis. This role involves supporting the development and enhancement of a web-based compliance portal integral to a key programme. The successful candidate will play a crucial...
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...
Outside Spy
Apr 20, 2026
Duration not stated
Contract .Net Developer - Insurance claims system at hireful., Central London, £Contract Rate
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...
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