Top Front End Developer Jobs in Belfast

Lead frontend team to design and build scalable, performant React-based web applications. Define frontend architecture and standards, mentor developers, ensure code quality, optimize performance, and collaborate with UX, product, and backend teams.

As a Senior Frontend Engineer, you'll design and deliver React/TypeScript components, optimize performance, and lead frontend architecture for complex web apps.

As a Senior Frontend Engineer, you'll lead the development of web apps using React and TypeScript, creating intuitive, data-driven UIs, while implementing best practices and performance optimization.

As a Senior Frontend Engineer, you'll create production-ready web components using React and TypeScript, optimize performance, and collaborate with teams to deliver complex UIs for AI applications.

As a Senior Frontend Engineer, you'll deliver web-based AI modeling tools, optimize frontend architecture, and collaborate on complex UI components.

Join the UK engineering team to design, build and maintain the Immersive One frontend. Collaborate with product and QA, write test automation, improve developer experience, resolve incidents, participate in on-call, mentor engineers, and help translate product requirements into robust, scalable frontend solutions.

Develop front-end solutions using React, optimize applications, mentor junior team members, and collaborate with cross-functional teams to meet business requirements.

The Lead Front-End Developer will design and develop user interfaces, mentor teams in coding standards, and improve product efficiency through collaboration and feedback in an agile environment.

Build key features for HyperDX focusing on developer experience, engage with contributors, and handle petabyte-scale data efficiently.

Build and optimize a responsive Vue.js frontend for a customer-service SaaS, collaborate with product and dev teams, handle production support, participate in Agile ceremonies, perform code reviews, and mentor junior developers.

Design and build user interfaces using React and TypeScript, collaborate with architects, product and UX, follow Agile practices, produce reusable UI components, mentor teammates, and contribute to coding standards, architecture, and CI to continuously improve products.

Build and maintain data-rich interactive UIs using React and TypeScript, collaborate with backend/design/data teams, test and debug across browsers, follow team standards, participate in code reviews, and grow frontend skills with mentorship.

Build and maintain responsive, accessible front-end experiences across Anaconda's WordPress web properties. Own front-end architecture, implement pixel-precise React components, optimize Core Web Vitals, create CMS tooling (custom blocks/page builders), collaborate with designers and backend developers, and improve site engagement and conversion.

The Principal Frontend Engineer will drive Paddle's technical vision, own architectural strategy, mentor engineers, and improve frontend systems' performance and user experience.

The Front-End Developer will design and implement web applications, maintain existing features, collaborate with teams, and ensure application performance and security.

As a Senior Frontend Engineer, you'll design and develop web and mobile applications, mentor juniors, and enhance coding practices while collaborating closely with the engineering team.

As a Lead Backend Engineer, you'll design and build core features, ensuring high performance and collaborating with cross-functional teams. You'll own features end-to-end and mentor other engineers, promoting engineering excellence and innovation.

As a Senior Front-End Developer, shape UK public-sector digital services using React and Next.js to create accessible, efficient user experiences and lead front-end architecture and development.

As a Lead Software Engineer, you will design and implement scalable developer tools, collaborate with teams, ensure software quality, and mentor fellow engineers.

As a Senior Front End Engineer, you'll develop full-stack web applications using Typescript, collaborate with diverse teams, and ensure impactful user experiences.

The Principal Software Engineer will lead the design, implementation, and maintenance of scalable software solutions, mentor other engineers, and drive engineering excellence, particularly focusing on developer tools and cloud-native environments.

As a Senior Software Engineer at Kraken, you will collaborate with teams to develop onchain services, optimize applications, and mentor engineers, focusing on blockchain and DeFi technologies.

The Frontend Engineer will enhance analytics tracking, optimize data flow and attribution models while collaborating across teams to ensure data accuracy and governance.

As a Software Engineer at Synthesia, you will own projects, contribute end-to-end in React, Python, and collaborate on product direction, focusing on commercial impact.

You will own projects spanning months, work end-to-end on a React client application and Python backend, and shape product direction.