20 of 20 Permanent Front End Developer (Client-Side Developer) Jobs in London

passion, vision and dynamism are part of our DNA – and that extends to our team. Role Overview: We’re looking for a Senior Front-End Developer to join Liberty’s Digital team, playing a key role in the ongoing development and evolution … digital platforms. You will take ownership of the in house front-end implementation across LibertyLondon.com, the Fabrics site, and supporting digital touchpoints such as email and experimentation platforms. You will help shape high-quality, performant, and accessible user experiences that reflect Liberty’s brand and drive ...

Front End React Developer, React, Javascript, NW London to £75K A leading financial software company are looking for a Front End JavaScript developer who is proficient with React.js. The role is Offcie based … collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Developing new user-facing features using React.js Building reusable components and front-end libraries for future use Translating designs and wireframes into high quality code Optimising components for maximum performance across a vast array ...

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 … 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 ...

lean, ambitious and focused on real‐world impact, yet technically deep and product‐led. About the Role You will help shape the front end of a high‐impact product used by enterprise customers, using React , TypeScript , and Next.js . You’ll work across the full front‐end life cycle — from architecture and design collaboration, through to deployment and optimisation — delivering robust, performant, and accessible user interfaces. You’ll join a highly collaborative team where your voice will matter, and your work will be visible at scale. What You’ll Do Build ...

Hedge Fund – London – Up to £200k A leading Hedge Fund is looking for an experienced Frontend Engineers to join their Front Office technology team in London. This is a high-impact role, working directly with Portfolio Managers, Quants, and Traders to design and deliver cutting-edge front-end systems that power real-time investment decisions. You’ll be building intuitive, high-performance UIs in React/TypeScript, with a strong focus on data-rich visualisations that bring complex trading strategies and risk models to life. This role offers true ownership of front ...

Senior Front End Engineer | Remote-first (UK) | 4-Day Work Week I'm working exclusively with a fast-growing, mission-driven UK tech start up backed by some of the most respected names in the industry. They're building genuinely impactful software that is already being … used by frontline public service teams across the country, and I'm looking for a Senior Front End Engineer to join their small, high-performing engineering team. This is a founding-level hire. You won't be joining a large team with layers of process around ...

TypeScript ( Node. js & React) Monorepo tooling, GitHub, GitHub Actions Jest, Playwright Redis, MS SQL, WebSockets Docker, Kubernetes Observability tools ( Grafana, Prometheus, SonarQube) Take end- to- end ownership of features from design to production. Collaborate closely with platform and DevOps engineers on build pipelines, observability, and operational ...

practices and compliance requirements where applicable. Desired experience: - Proven experience in a senior engineering role with ownership of complex systems. - Strong expertise in front-end technologies (JavaScript/TypeScript frameworks) or another core area such as React - Ability to work beyond a single specialization (T-shaped … skillset) — preferred but not strictly mandatory. - Experience integrating front-end applications with APIs and backend services. - Solid understanding of distributed systems and cloud environments (AWS preferred). - Familiarity with CI/CD pipelines, automated testing, and modern delivery practices. - Experience with performance optimisation, debugging, and observability ...

Opportunity We are partnering with an innovative and fast-growing technology business to recruit a Senior Frontend Developer with deep expertise in React and React Native. This is a key hire within the engineering team, suited to someone who can take ownership of core frontend areas ...

Our client, a large enterprise, is seeking a Senior Full- Stack Engineer to join an established trading platform programme. This production- critical system is long- lived, actively evolving, and places strong emphasis on ...

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 … technical staff during all phases of the software lifecycle to keep development priorities aligned with business needs Take ownership and drive end-to-end quality software development processes The minimum were looking for (show us what you got if you arent a perfect fit): 4+ years ...

accessible and user-friendly, optimizing for performance on multiple devices and browsers. Responsibilities include creating responsive web applications, collaborating with design and back-end team, and ensuring seamless integration with backend functionalities. What we offer: Equity only at this stage — we're pre-seed and can't offer … USSD on feature phones, your web interfaces will serve cooperatives, buyers, and administrators who manage the platform's core operations. Requirements Expertise in Front-End Development , including proficiency in HTML, CSS, and JavaScript. React and Next.js proficiency — our primary frontend framework. Mobile-first and responsive design ...

Frontend Engineer STS Digital (www.stsdigital.io) is a leading regulated digital asset trading firm specialising in OTC trading and market making. While trading is headquartered in Bermuda, technology development is provided by a vibrant global engineering ...

TheOpportunity Wearepartneringwithaninnovativeandfast-growingtechnologybusinesstorecruita SeniorFrontendDeveloper withdeepexpertisein ReactandReactNative . Thisisakeyhirewithintheengineeringteam,suitedtosomeonewhocan takeownershipofcorefrontendareas ,workindependently,andconfidentlydelivercomplexfeaturesfromdevelopmentthroughtorelease. KeyResponsibilities Developandmaintain webapplications(React/Next.js) and mobileapps(ReactNative/Expo) Takeownershipoffeaturesfromconceptthroughto productionrelease(includingAppStoredeployment) Designandimplement robustfrontendarchitectureandintegrationlayers Manageauthenticationflowsusing MSAL Collaboratecloselywithbackendteamsworkingon Node.jsmicroservices Supportdeploymentandconfigurationacrossenvironmentsusing Azure KeyRequirements ...

TransPerfect is an established company with a start-up culture seeking creative entrepreneurial people like you to join our team. Were hiring a Frontend Engineer to join our global team to be responsible for the ...

Senior Frontend Developer (Contract) Location: Fully Remote (EU-based candidates considered) Day Rate: £300–£340 per day Contract Type: Outside IR35 Start Date: ASAP uration: 3-6 months Overview We’re supporting a fast-paced digital product company, looking for a Senior Frontend Developer ...

Role: Senior Developer Location : London (Hybrid) Tech: React, Svelte, JavaScript, GSAP, Three.js (bonus) Salary: Up to £80,000 plus benefits Are you interested in building interactive stories seen by millions? We’re working with one of the most recognisable media platforms globally, investing heavily in digital ...

Opportunity We are partnering with an innovative and fast-growing technology business to recruit a Senior Frontend Developer with deep expertise in React and React Native . This is a key hire within the engineering team, suited to someone who can take ownership of core frontend ...

Frontend Developer Day Rate: £450 Outside IR35 Duration: 6-months Start Date: ASAP Are you actively looking for you next contract opportunity? We're working with a Data Technology Business who are looking for additional support within their Engineering teams. They have a high volume … work through one of their biggest customers so the demand is high and the support is needed asap. The Frontend Developer will be needed for supporting on all frontend projects - you'll be working with new and existing customers. Typical frontend stack with React and Typescript. ...

Role: React Frontend Developer Salary: Up to £200k (1st year compensation) Location: London (Hybrid) Skills Required: Extensive React experience needed This firm is an elite investment institution that uphold extremely high tech standards. They are made up of some exceptionally talented individuals who above ...