5 front end developer jobs found in London

Ruby on Rails Developer | Outside IR35 | Remote We're working on a large Gov project and on the lookout for a Ruby on Rails Developer to support and enhance a live GOV.UK service. This is a hands-on opportunity for a collaborative engineer who enjoys working across the stack, contributing to architectural decisions, and delivering meaningful user impact within an agile environment. The Role You'll join an autonomous, multidisciplinary team responsible for refining and improving a live digital service. Working across Ruby on Rails and Java (Spring Boot), you'll help deliver scalable, secure solutions in AWS, ensuring changes are robust, well-tested, and user-focused. Key Responsibilities Collaborate with technical and non-technical stakeholders to enhance a live GOV.UK service Build and maintain Back End services using Java (Spring Boot) and PostgreSQL Develop and improve Front End features using Ruby on Rails and GOV.UK Frontend Contribute to architectural...

Location: The role is based remotely with occasional travel to London. Daily rate: £400 outside IR35 Duration: Initial 6 months *please note* : must have active SC clearance The Back End Developer will have the following responsibilities: Design, develop, and maintain Back End systems and services using Java. Collaborate with Front End developers and other cross-functional teams to deliver seamless and scalable solutions. Write clean, maintainable, and well-tested code following industry best practices and web standards. Troubleshoot and resolve complex technical issues related to Back End systems. Participate in code reviews and contribute to the continuous improvement of development processes. Ensure high-performance and reliability of Back End services through proper architecture and testing. Leverage Azure services to optimize cloud-based solutions (if applicable). Stay up-to-date with emerging technologies and incorporate them into the...

React Developer Remote with very occasional client visits £400pd to £420pd - Outside IR35 3 - 6 month contract Our client, an established and successful Consultancy are looking for a number of mid-level Developers to join them on a contract basis With head offices in the north of the UK and branches spreading across the globe, they're a dynamic technology consultancy leader with a dedicated team of professionals, partnering with sector leaders After recently winning a large public sector project they are creating a whole new team and need people who are able to start no later than March 16th. This is a fully hands on role where you will work as part of an established successful team, primarily working with React and Typescript technologies We are looking for: Expert knowledge of React Strong proficiency in JavaScript (ES6+), HTML5, CSS3, and responsive UI engineering. Experience with Redux or other state management libraries. Strong understanding of Front End...

Microsoft Teams App Developer/Microsoft 365 Solutions Developer Outside IR35 Contract Hybrid - High Wycombe Contract: Outside IR35 Location: Hybrid (High Wycombe - on-site as required) Start: ASAP Duration: Initial contract with extension potential The Opportunity We are looking for an experienced Microsoft Teams App Developer to deliver a custom Real Time meeting, microphone, and voting system built directly into Microsoft Teams . This project replaces traditional dedicated conference and voting hardware with a modern, software-based solution. You'll be building both the delegate-facing Teams app used in live meetings and the administrative control systems used to manage speakers, microphones, and voting in real time. This is a specialist contract role requiring deep Microsoft Teams platform experience , Real Time systems knowledge, and strong enterprise UX instincts. What You'll Be Working On Delegate-Facing Teams Application Design and...

Full Stack .NET Developer | £600 Outside IR35 | 2 days per week on site in Milton Keynes | Active SC clearance required The Role We are looking for experienced Full-Stack .NET Engineers with a background in data-centric projects to join our consultancy team, deployed directly into high-profile public sector departments. You will be a key member of a multidisciplinary delivery team, responsible for both front and Back End development of the digital services that power essential public functions. In this role, you will bring a data-centric engineering mindset to the development lifecycle. You will be responsible for building robust, data-driven applications that handle complex logic and large datasets with precision. Your expertise will ensure that data is captured, processed, and surfaced securely and efficiently, adhering to modern standards for data integrity and performance within the .NET ecosystem. The role involves embedding yourself within the client's engineering...