1 to 25 of 39 Front-End Developer (Client-Side Developer) Jobs in Central London

revolutionising the financial industry with cutting-edge technology solutions. Their innovative platform is designed to empower individuals and businesses by providing seamless financial services. As a Senior Front-End Developer, you will play a pivotal role in shaping the company's products and driving the development of our user interfaces. You will … work closely with cross-functional teams to deliver high-quality front-end solutions that enhance the user experience and drive business growth. This role also presents an excellent opportunity for someone who aspires to move into a leadership position within the organisation. Responsibilities: Collaborate with product managers, designers, and back-end engineers to develop … user-friendly, responsive front-end applications. Build robust and scalable web applications using React, ensuring the highest standards of performance, security, and usability. Participate in the full software development life cycle, from requirements gathering to deployment and maintenance. Identify and resolve technical challenges, optimising front-end performance and improving user interfaces. Mentor More ❯

and delivering autonomous AI teams 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 that allow users to configure … interfaces to solve one of 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 technologies to continuously improve the user experience Participate in agile development processes, including Test Driven More ❯

the House of Commons Library, providing information and enquiry services about the business of Parliament for Members of Parliament, their staff, and staff of the House. The Developer role will focus on developing and maintaining software to support the provision of those services. you will work as part of a team on solving complex puzzles to More ❯

FTC) Location: London/Remote Salary: £50,000-£60,000 DOE Skills: JavaScript, HTML, CSS, React, Vue, Wordpress, AWS We are seeking a skilled and detail-oriented Front-End Developer to join our dynamic team on a 12-month contract. As a key member of our development team, you will play a … diverse projects, bringing innovative ideas to life while ensuring consistent performance and usability across devices and browsers. Key Responsibilities ● Develop and maintain responsive web sites using modern front-end technologies ● Collaborate with designers to implement and refi ne designs ● Optimise applications for speed and scalability ● Ensure code quality through testing and peer code reviews ● Participate in … agile development processes, including sprint planning and daily stand-ups ● Troubleshoot and debug front-end issues across various browsers and devices ● Help maintain and improve CI/CD setups Required Qualifications ● 3+ years of experience in front-end development ● Strong proficiency in HTML, CSS, and JavaScript (ES6+) ● Strong understanding of WordPress and More ❯

tutoring company and best Edtech 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 devices and browsers. Performance Optimisation: Optimise website performance, including loading speed, code structure, 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 for browser and device compatibility and resolve any issues. Essential Skills Advanced 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, portfolio management, and risk analysis across private equity, private debt More ❯

Working on behalf of a leading Tier 1 investment bank who are looking to make a hire for a strong Frontend Developer at the AVP level for their Global Financing and Credit Team. This team are a leading market maker of Credit products on major Dealer to Client platforms. Your key responsibilities Working in More ❯

Job Title: Senior Front-End Developer/React Developer Duration: 6 Months Location: London Area, UK (2 Days per week) 8 Hours a day - 40 Hours Per week. What you'll do: Create extremely well-crafted front-end web applications using React.js and Next.js … Server Side Rendered (SSR) web applications, making use of AWS Lambda Write resilient code that will be continuously tested, deployed, and performed at scale Test front-end applications end-to-end with unit, functional, integration, visual regression, and Lighthouse testing Be part of a self-organising and cross-functional Agile 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 we cooperate with internal and … or Nest.js. · Demonstrated ability to 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 optimize performance. · Capable of developing More ❯

include: Implement defined features through 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 smooth performance Perform code reviews More ❯

and important projects for the 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 deepen their domain expertise in … best practice, mentor and coach 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 migration to the cloud as part of our technical transformation. Microservices- You will need a More ❯

This role is with a Calyptus partner. Responsibilities Ship the first version of the companies web application, starting from designs. Build a landing page that converts visitors into users. Implement the trading interface for minting, redeeming, and managing Leveraged Tokens. More ❯

Junior Frontend Developer (Angular + UX Focus) Full-time| Hybrid | Startup Environment We’re looking for a motivated and curious Junior Frontend Developer to join our early-stage startup based in London. We’re building an industry-specific productivity management tool, AI- powered, supported by strong investment and high-profile partners. In More ❯

Senior Front-End Developer (one day a week in the central London office) Sports Analytics This role is a unique opportunity for a Senior Front-End Developer to combine technical challenges with creativity in a collaborative, high-standard work environment. By joining this team … ideal setting for those passionate about leveraging cutting-edge technology to make meaningful contributions in the world of sports analytics. Key responsibilities for the role of Senior Front-End Developer include: Build responsive, accessible, and high-performance front-end interfaces using Next.js, React.js, and Tailwind CSS. Collaborate with … scalability, with an emphasis on cloud integration. Contribute to CI/CD processes, deployments, and frontend build pipelines in a cloud-based environment. As the selected Senior Front-End Developer, your background will include: 5+ years industry experience in a Front-End Developer role More ❯

Senior React Developer required for an exciting sports technology start up with a fantastic product based around fan interaction during live sporting events. You will be joining a business who are already at the forefront of their industry and have a small but highly skilled team. The primary skills required are React + Typescript, and if … this Senior React Developer/Senior Frontend Developer role we are looking for an experienced Senior Front End Developer to work remotely apart from 1-2 days a month where you would need to come to the London office or go to client … quarterly international team meetup. Want to work as a Senior React Developer/Typescript Developer/Front End Developer on a fantastic, cutting-edge product? Want to work with the latest technology and continually evolve? My client are offering fully remote working More ❯

plus bonus Harrington Starr has 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. This is 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 Portfolio Managers, Sales Traders and Quants and end users where you More ❯

Senior Frontend Developer (React) | FinTech | Hybrid London | up to £80,000 + 10% bonus Company Overview: We are working with a client who is a leading Private Equity Data Analytics firm. They transform complex PE data into actionable insights for CIOs, CFOs, and General Partners, using AI to predict future fund performance. Role: They … re seeking a Senior Frontend Developer with strong expertise in React and TypeScript to enhance the user experience of their data analytics platforms. You'll be a key contributor in building intuitive and responsive interfaces. Responsibilities: Develop, maintain, and improve complex frontend applications using React and TypeScript. Collaborate with designers and backend developers to implement high More ❯

Senior Frontend Developer (React) 2-3 days p/week in London Up to £85k plus equity Would you like the opportunity to join an organisation looking to revolutionise the construction space? They have significantly increased their customer base recently and are now actively seeking a Senior Frontend Developer (React). As … a Senior Frontend (React) Developer, you will be responsible for taking their product to the next level, direct reporting to their Head of Engineering. You will be directly responsible for developing and maintaining their frontend application, will also working closely with their designers, product owner and data team. The team are built around working together, collaborating … Enjoy coming to the office and working in a small team. Vercel deployments from GitHub, with GitHub Actions is a bonus. If you’re a Senior Frontend Developer (React) looking to have an impact in an early-stage start-up, please apply. 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 strong expertise in Angular as … autonomy you would usually associate 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 and engineering principles Strong communication … to £85,000 London Office - 3 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 ❯

life. We also have a small number of B2B clients including the University of Cambridge, Oxford and Imperial College London among others. We are looking for a Front-End Developer to help improve our online whiteboard Bitpaper, which is used by thousands of teachers and students to deliver online classes. You will … with a cross-product team to deliver visually appealing, highly functional, and a performance-optimised app that delights our users. Role: We are looking for an experienced front-end developer, who enjoys building user-centric browser apps, to help develop our online whiteboard Bitpaper (www.bitpaper.io). The ideal candidate would help develop … working in a wider tech team of seven people and be based in our Canary wharf office in London. Essential Requirements: 2 + years of experience in front-end development. Canvas and SVG Javascript/typescript React and similar frameworks like Next.js Git for version control Strong grasp of the English language with the ability to More ❯

Frontend Engineer - TypeScript, React, JavaScript, CSS, HTML, Restful API's (Hybrid - 3 days a week in the office near Notting Hill) Frontend Engineer :- You will be joining a fast-growing, research-driven company building an artificial intelligence using novel machine More ❯

Senior Frontend Developer – TypeScript, React 2-3 days p/week in London Up to £90k Would you like the opportunity to join an early-stage start-up who are looking to revolutionise the logistics space? They recently closed a round of funding and are now seeking a Senior Frontend Developer, who … s confident working with React and TypeScript. As a Senior Frontend Developer, you will be responsible for taking their product to the next level. You will be directly responsible for developing and maintaining their frontend application, while working closely with the Head of Engineering. Previous start-up experience would be a bonus; however, they can be … and working in a small team. Happy to consider any profile with 3+ years’ experience Degree background would be a bonus If you’re a Senior Frontend Developer looking to have an impact in an early-stage start-up, please apply. More ❯

to excel in a dynamic, high-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 make cutting-edge computer vision accessible to everyone. Key responsibilities include: Designing, developing, and maintaining 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 ❯

We have a great opportunity for a Front-End Developer with a fast growing & innovative Tech scale-up. They have great product (multi award winning), are well funded, and have a strong management team. A great time to join! If you enjoy solving problems, are inquisitive and have a passion for technology … React for a Web UI with JavaScript but going forward we will utilise React with TypeScript and the Microsoft FluentUI framework. Whilst the primary focus is on front-end development with React, TypeScript and FluentUI, you will also have the opportunity to get involved with other cutting edge Tech and also learn new technologies. Experience You More ❯