1 to 25 of 27 Part-Time Front-End Developer (Client-Side Developer) Jobs in the City of London

that work alongside humans to solve real-world problems. As we continue to expand our product offerings, we are seeking a talented Front-End Developer to help shape the future of human-AI collaboration. In this role, you'll build intuitive dashboards … the AI era’s biggest challenges: making complex systems usable through powerful, non-chat user experiences. Key Responsibilities Develop, maintain, and optimize front-end components for modern web applications Implement responsive, mobile-friendly designs that ensure cross-platform compatibility Translate wireframes and prototypes into polished, production … ready applications in collaboration with UX/UI designers Integrate front-end interfaces with REST and GraphQL APIs, as well as back-end systems Ensure high-quality, maintainable code through testing, debugging, and adherence to best practices Stay current with emerging UI/UX More ❯

Role – Front-End Developer Office travel – Hybrid (3 Days a week in the office) Location – Central London Salary – £80,000 - £90,000 + Benefits Infinite Talent have partnered with a renewable energy start-up backed by a global business to recruit for More ❯

company. We are looking for a Front-End WordPress Developer to take ownership of front-end updates and enhancements for our websites. You will work closely with cross-functional teams to deliver visually appealing, highly functional, and performance … optimised platforms that delight our users. Key Responsibilities Front-End Development: Implement new features, components, and layouts using WordPress, HTML5, CSS3, and JavaScript. Content Management: Update and maintain website content in alignment with branding and SEO strategies. Responsive Design: Ensure a flawless user experience across all … and accessibility. Collaboration: Work with team members to enhance various aspects of UX/UI/SEO. Bug Fixing: Identify and address front-end issues promptly to maintain platform reliability. Plugin Management: Configure, update, and troubleshoot WordPress plugins to enhance functionality. Quality Assurance: Conduct regular testing More ❯

An exciting opportunity to join a one of the most profitable Global Hedge Funds, working closely with members of trading desks and other development teams. You are expected to provide technical expertise to enhance, support and refresh the front More ❯

Frontend Engineer (GreenTech) - Typescript, React.js, Tailwind CSS, RESTful API's, Testing - Cypress/Jest, Complex Design & Architecture, Problem Solving! We're hiring for a GreenTech scale up who have recently secured huge PE funding and are looking for a Frontend More ❯

They have approximately 200 million customer accounts and do business in more than 160 countries. We are seeking a hands-on UI Developer with solid experience in modern JavaScript/TypeScript, React and Angular, Node.js, and NPM. The ideal candidate should be passionate about writing clean More ❯

Job Description: • Proven experience as a Front-End Developer with a focus on React.js, and Typescript. • Familiarity with C# and .Net. • Strong proficiency in JavaScript, ES6/ES7, and related front-end technologies. • Familiarity with state management libraries More ❯

Frontend Engineer | AI x Defence | London (Hybrid) | Up to £110k + Meaningful Equity Shape the Interface to the Future of Autonomous Defence Join one of the UK’s most ambitious AI-defence startups, backed by top-tier investors and moving More ❯

Software Engineer – Next.JS Salary up to £80000 - plus bonus Next.JS, Serverside Rendering and Static Rendering, JavaScript, AGGrid, JavaScript. Harrington Starr has partnered with an innovative Digital Investment & Crypto Currency house that specialise in developing unique software systems for Crypto Trading More ❯

Senior React Developer London, United Kingdom · Full-time Description A fast-growing investment technology platform is seeking a talented Senior React Developer to join its frontend development team. The successful candidate will work on a suite of web applications supporting trade execution More ❯

of a critical, enterprise-scale system that will impact thousands of users daily. Your Role As the Lead UX/UI Frontend Developer , you'll take ownership of the frontend strategy, design system, and component architecture. You’ll collaborate closely with product managers, UX designers, backend More ❯

client, a global branding, marketing, and communications agency, is looking for an ambitious , collaborative and client facing web developer to join their digital team. The successful candidate will work closely with specialists across various disciplines - including design, SEO, paid media, and strategy More ❯

React, TypeScript, and GraphQL Experience with Python or other server-side programming languages is a strong plus Familiarity with modern front-end build tools and CI/CD pipelines AWS and/or Kafka highly beneficial experience. Excellent communication skills and a collaborative mindset More ❯

Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday … Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date: ASAP Purpose of the role: As a Front End Developer you will join one of our multinational Scrum teams to create state-of-the-art software solutions. In all teams … thrive in an Agile environment. · Proficient in addressing cross-browser compatibility issues and employing effective strategies to resolve them. · Well-versed in front-end build tools, such as Webpack. · Skilled in utilizing code versioning tools, notably Git. · Sound understanding of browser rendering behavior and techniques to More ❯

in building high-performance, real-time web applications Expertise in JavaScript & TypeScript modern web frameworks Good knowledge of the architecture of performant client-side React applications Experience with web sockets or other real-time data protocol If this role sounds like a great fit for you More ❯

Must be Eligible to work in the UK. Innovative Data & Insights Research organization providing Insights for leading International Brands requires a talented Front-End Developer. The role will partner with a team of Data Scientists. Role: Front End Development. User Experience Design …/Development. Partner with a team of Data Scientists & Software Engineers. User Interfaces - Design & Construct intuitive & responsive User Interfaces. Experience Required: Front-End Development - 3+ years’ experience. React.js. GraphQL. Typescript. Tailwind. RESTful API. Innovative approach - ability to compose your own ideas. Communicate effectively with technical & non … technical stakeholders. Ability to work remotely. Desirable Experience: Backend Development Node JS AWS JSON Web Tokens with AWS. Keywords: Front End Developer, React.js, React, GraphQL, Tailwind, Typescript, Tailwind, Code Versioning Tools, Front End Developer More ❯

future of the bank. Our new Savings platform is in development, and we need an experienced engineer to take ownership of the front-end and guide us on best practices, high-quality solutions and innovative solutions. This role offers a chance for a skilled engineer to … junior members of the team to support their development. Qualifications JavaScript & React JS- You will use React JS to build out the front-end presentation layers of our products. React Native and Expo - You will be helping to build mobile apps and publish via Google Play … and Apple App Store Front-end testing- You will need experience testing front-end systems, using tools like Playwright or similar, to ensure high-quality code. Cloud Experience (ideally Azure)- You will need a solid understanding of cloud fundamentals for the wider More ❯

code development, while also conducting thorough investigations and resolution of bugs Develop modular, reusable code components to streamline development and maintenance Utilize front-end frameworks like Vue.js, or Angular to create scalable and reusable UI components Optimize code and assets to ensure optimal load times and More ❯

Senior Frontend Developer London Up to £85,000 + Bonus Angular, Typescript We've partnered with a globally successful retail organisation who have built out a creative digital-incubator with an emphasis on unique in-person digital signage & interaction. They're seeking a Senior Frontend Developer … with a start-up, but with the security and scalability of working for a high-performing & large company. As a Senior Frontend Developer, you will have the following: Demonstrable commercial experience in modern Angular 17 + frontend engineering A strong grounding in modern agile best practices … days per week onsite Discretionary Bonus Private Medical Insurance Unlimited Holiday Days This is a great opportunity for a Senior Frontend Developer with strong expertise in Angular to make a real impact in a retail organisation on a big upwards trajectory More ❯

partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software Developer to work in a Front Office environment with Traders, Quants and Portfolio Managers within a Front Office Trading Floor. … a high profile role for a Multi Asset Trading Team within a Front Office environment. As the Senior Trading UI Developer, you will have extensive experience of working with the JavaScript Framework including ES7 and HTML and CSS. You will be working directly with More ❯

energy environment. Join our team and help shape the future of Vision AI . Location and Legalities This full-time Frontend Web Developer position is based onsite in our brand-new Ultralytics office in London, UK. Applicants must have legal authorization to work in the UK … as Ultralytics does not provide visa sponsorship. What You'll Do As a Frontend Web Developer at Ultralytics, you will be a key architect of the Ultralytics HUB , our flagship platform for building and deploying AI models. You will create intuitive, high-performance user interfaces that More ❯

Frontend Vue.js Developer – Fixed Income Trading | Data Visualisation We are currently recruiting for a Frontend Vue.js Developer to join the Fixed Income Trading Group at a leading asset manager. This is an exciting opportunity to be part of a multi-year greenfield More ❯

Front-End Engineer | React, Next.js, Tailwind | Web3/Crypto Innovation Hub Step into the engine room of one of London’s most exciting Web3 gaming ventures. This is a chance to build future-defining crypto gaming products, from live casinos to blockchain lotteries, backed by the … with product and design to craft frictionless user journeys across casino, lottery and future products You’ll be joining as the second Front-End Engineer in the business and will be expected to hit the ground running. The current focus is on scaling our consumer-facing … Friday socials, arcade machines and ambitious roadmaps Ownership from day one and a team that wants your opinion, not just your commits Front-End Engineer | React, Next.js, Tailwind | Web3/Crypto Innovation Hub More ❯

Frontend Developer – £650/day – 6 months – Inside IR35 – 3 days onsite (London) React or Svelte – Commodities Trading – AWS – TypeScript You'll be working for a leading energy trading business, building out a modern post-trade platform that's genuinely pushing boundaries – live PnL, intraday position More ❯

We have an exciting opportunity for a Front End Developer to join a cracking Creative Agency, to play a pivotal role in bringing their vision to life - working five days a week at their London office! You will be involved throughout the … building amazing production-ready code. Working closely with the other members of the Digital Team and wider studio, the Front End Developer’s role will involve: Monitoring designs and identifying gaps for feasibility. Informing experience design through a technical eye. Managing and More ❯