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.

The Senior AI Frontend Engineer will lead the development of AI-driven user interfaces, mentor junior engineers, and design production-grade features for enhancing developer productivity at Citi.

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.

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 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.

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.

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.

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.

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.

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

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 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.

Lead frontend development of features and user experiences, focusing on performance, accessibility, and reliability in an Agile environment. Mentor teammates and improve CI/CD pipelines.

Join Upwind as a Frontend Engineer to develop and enhance user interfaces using React, WebGL, and TypeScript, focusing on user experience and design integrity.

The Senior Front-End Engineer will modernize and build front-end projects at Pitchup, utilizing Nuxt.js and Vue.js, while enhancing UI/UX and improving development practices.

Design and build high-performance front-end applications using React and TypeScript, optimizing for performance and usability, while mentoring junior engineers and collaborating with a cross-functional team.

Full-Stack Engineer responsible for developing and maintaining front-end and back-end components, collaborating on product solutions, and improving user interfaces.

You will build features in Angular 2+, architect reusable code, manage project priorities, resolve performance issues, and mentor teammates.

Full-stack Developers at QuantCo build user interfaces for machine learning solutions, collaborating with data scientists and engineers to deliver actionable products.

The Staff Software Engineer will lead front-end development, optimize user experiences, mentor engineers, and ensure high-quality, scalable solutions for MZLA's products.