Top Web Developer Jobs in Belfast

Develop new features for SpotMe's CMS (Backstage) and WebApp, optimize user experience, maintain integrations with external systems, participate in cross-team projects, and refactor legacy code.

Seeking a Senior Fullstack Engineer to design, develop, deploy, and operate business-critical features for Aircall's communication technology. Responsibilities include requirements analysis, code development, mentoring, and optimization of products and platforms. Must have 5+ years of backend development experience and 2+ years of frontend development experience.

The Web Developer role at Marigold involves delivering customer-focused projects, troubleshooting campaign issues, translating business use-cases into technical requirements, and collaborating with teams globally. The ideal candidate will have a technical background, strong communication skills, and experience in SQL, ASP.NET, PHP, HTML, CSS, and JavaScript.

Join HubSpot as a Staff Software Engineer on the Forms Frontend team within Marketing Hub. Help build the future of the Forms product, write and ship production code, collaborate with cross-functional teams, and contribute to product innovation. Experience with React and TypeScript is preferred. Passion for clean code, product development, and mentoring is essential.

Senior Software Engineer - Front End role at Doccla, responsible for building the Virtual Ward and clinician portal to improve clinical outcomes for patients across the UK. Requires self-motivation, experience with Elm language, and strong UX/UI design skills. Experience with web components and quality management system IEC-62304 is a plus.

Join Webflow as a Frontend Engineer in the Designer UX team to build personalized web and visual design experiences using Webflow Designer. Responsibilities include writing performant UIs, working with technologies like React and CSS, and collaborating with product managers and designers. This is a remote-first full-time permanent position with a salary range of €54,100 - €78,100 in Ireland and £60,100 - £78,100 in the United Kingdom.

Join Seedify as a Junior Frontend Engineer working on UI development using React and NextJS, collaborating with design teams, integrating with backend services, maintaining code quality, and implementing feedback.

The Senior Software Engineer - Frontend at EFG (ESL FACEIT Group) is responsible for building large-scale applications using React, Redux, and Next.js. They should have experience with WebSockets, real-time messaging, and a passion for video games and esports. Ideal candidates will have knowledge of Webpack, testing frameworks, optimization strategies, web best practices, and scalable architecture systems.

Looking for a Senior Frontend Software Engineer to build scalable and maintainable modern web applications for Neptune, aiming to be the MLOps standard for data scientists worldwide. Responsibilities include building scalable, portable, and flexible web UI applications, cooperating with other engineers, choosing tools, defining architecture, and implementing new features. Expectations include a solid background in Computer Science, 5+ years experience with TypeScript and React, excellent code review skills, hunger for knowledge, and optional knowledge of Machine Learning concepts.

Build web applications 'client side', translate company and customer needs into functional and appealing interactive applications.

This Software Engineer III - Front End position at Walmart Global Tech involves designing and developing in large-scale, complex projects, collaborating with cross-functional teams, and working on cutting-edge JavaScript-based technologies for UI features.

Seeking a Senior Front-End Developer to join a remote-first team at a travel-tech company revolutionizing the telecom industry. Responsibilities include designing and developing software components, collaborating with developers, and optimizing single-page applications. Must have a Bachelor's degree in Computer Engineering, 4 years of full-time development experience in JavaScript, 2 years with VueJS, and expertise in front-end development tools and technologies.

As a Staff Frontend Engineer - Multiplayer at Fortis Games, you will contribute to building an original IP game with multiplayer features, collaborating with designers, artists, and engineers. Your responsibilities include developing game features, implementing server-dependent features, maintaining code quality, and resolving technical issues.

Optimize web-based application performance by collaborating with front-end developers, designing back-end components, and integrating data storage solutions.

This role is for a Web Frontend Engineer with a focus on JS, CSS, React, and Flutter technologies. Responsibilities include writing high-quality software, collaborating with a global team, and contributing to technical documentation. The company works on open-source projects and values accessibility and performance in their products.

Looking for a Frontend Developer with 3-5 years of experience in web development and 2-3 years working with Angular to join Appinio's software development team. Responsibilities include maintaining the platform, developing new features, and collaborating with the Design team for UI enhancements.

Develop responsive frontend of a SaaS application using Vue.js and other cutting-edge technologies. Work on complex systems to serve hundreds and thousands of customers daily. Collaborate with product owners and other team members to enhance the application with new features and user stories. Participate in code reviews, support calls, and team ceremonies. Mentor junior team members.