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.

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 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.

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

As a Frontend Engineer, you will develop mobile-first UIs in VueJS, enhance performance, mentor team members, and participate in code reviews and team ceremonies.

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.

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

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

Develop and maintain user interfaces using React and TypeScript, while collaborating with backend and design teams. Contribute to architectural improvements and mentor junior engineers.

Design, develop, and maintain front-end applications using Vue and TypeScript, collaborate with teams, and integrate emerging technologies.

The role involves developing high-quality Vue.js applications, creating interactions, collaborating with back-end engineers, and writing tests.

The Senior Product Engineer will design and implement features using JavaScript/TypeScript and React, lead projects, and build innovative user experiences for an AI-native CRM.

The role involves engineering, testing, and the development of advanced frontend components for an AI-driven cybersecurity product, integrating AI features and ensuring best practices are followed.

The Senior Frontend Engineer will build scalable software components, improve SEO, and mentor junior developers while translating business needs into high-performance 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 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 Senior Front End Engineer, you'll develop full-stack web applications using Typescript, collaborate with diverse teams, and ensure impactful user experiences.

The Senior Frontend Engineer will lead frontend development for Usage Ingestion software, ensuring operational deliverables and collaborating closely with team members.

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 Senior Frontend Platform Engineer will enhance developer experience by optimizing tools, CI/CD pipelines, and workflows in a monorepo environment, focusing on automation and productivity for engineers.

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.