Top Front End Developer Jobs in Belfast

Build responsive, high-performance front-end applications using React and Next.js, integrate GraphQL data flows, configure bundlers like Webpack, implement test automation (Playwright/Cypress), and collaborate with UX, ML and product teams to handle large datasets and scalability challenges.

Design and implement frontend applications using JS, CSS, React, and Flutter. Collaborate on technical specs and contribute to documentation, ensuring user experience and performance.

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.

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

As a Frontend Engineer, you will build user-facing features for our casino platform, collaborating with designers and engineers, ensuring code quality and performance, and advocating for modern best practices.

The Frontend Engineer will implement UI features, automate UI testing, and oversee production releases while focusing on user experience in the blockchain space.

As a Front-End Engineer at Paddle, you will develop the churn prevention product, enhancing customer experience via smart dunning retries and cancellation flows, while collaborating with cross-functional teams.

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.

We are seeking a Senior Software Engineer with a strong focus on front-end UX to lead production applications using C# and .NET. Responsibilities include design decision-making, mentoring, CI/CD maintenance, and promoting best practices in a collaborative Agile environment.

The Senior Frontend Engineer will develop features for a mobile application, collaborate with design and backend teams, and maintain code quality.

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

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.

Design and lead frontend architecture and development for scalable, secure web UIs that integrate with embedded systems and cloud platforms. Build device provisioning, telemetry visualization, and remote management interfaces; optimize performance and accessibility; mentor engineers; collaborate across backend, hardware, and systems teams to deliver end-to-end solutions.

Design and build scalable, secure, high-performance web UIs for embedded and connected systems. Collaborate with backend, embedded, hardware, and cloud teams, optimize performance, ensure accessibility and security, and participate in code reviews and design discussions.

Design and develop scalable, secure frontend web applications for connected embedded systems. Lead frontend architecture, collaborate with backend/embedded teams, implement device provisioning, telemetry visualization, and remote management UIs. Optimize performance, accessibility, and maintainability; mentor engineers, participate in reviews, and drive frontend best practices.

As a Senior Frontend Engineer, you will develop intuitive, high-performance interfaces for real-time conversational AI experiences.

The Frontend Software Engineer develops and enhances user interfaces using React and TypeScript, collaborating on architectural decisions and improving system performance.

The Sr. Software Engineer (FE) will lead the development of scalable frontend applications using React. Responsibilities include systems design, testing strategy, performance optimization, AI integration, and mentoring.

As a Senior Front-End Engineer, you will develop and enhance user experiences for a product that simplifies Airbnb management, collaborating with cross-functional teams.

Looking for a Senior Front-End Developer with extensive Vue.js experience to enhance the Jibble 2.0 platform, collaborating closely with product teams.

Orion Innovation is looking for a Front End Angular Developer to assist in business transformation and product development across various industries. Responsibilities include implementing user interfaces and ensuring high performance.

The Senior Frontend Engineer will build enterprise-quality software, improve user experiences, mentor others, and manage complex technical challenges within Airalo's platform.