Top Front End Developer Jobs in Belfast

13 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Mid level
Mid level
AdTech • Big Data • Digital Media • Software
Build and maintain high-traffic React applications for ad-serving workflows. Translate design mocks into responsive reusable components, integrate with RESTful services, write unit-tested production code, respond to bugs and performance issues, collaborate across distributed teams, and support services in production.
Top Skills: JavaReactRestful ApisSpring Boot
Reposted YesterdaySaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Machine Learning • Business Intelligence
As a Senior Frontend Engineer, you'll deliver web-based AI modeling tools, optimize frontend architecture, and collaborate on complex UI components.
Top Skills: CanvasCSSHTMLReactTypescriptWebassemblyWebgl
Reposted YesterdaySaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Machine Learning • Business Intelligence
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.
Top Skills: CSSHTMLReactTypescript
Reposted YesterdaySaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Machine Learning • Business Intelligence
As a Senior Frontend Engineer, you'll design and deliver React/TypeScript components, optimize performance, and lead frontend architecture for complex web apps.
Top Skills: CSSHTMLReactTypescript
Reposted YesterdaySaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Machine Learning • Business Intelligence
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.
Top Skills: CSSHTMLReactTypescript
Reposted YesterdaySaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
Blockchain • Information Technology • Software • Cryptocurrency
The Frontend Engineer will implement UI features, automate UI testing, and oversee production releases while focusing on user experience in the blockchain space.
Top Skills: BlockchainEvmUi Testing
YesterdaySaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
Marketing Tech • Software
Build responsive, production-grade web UIs and data-dense dashboards from design prototypes. Implement interactive visualizations, integrate with REST/GraphQL backends, manage state and performance, write frontend tests, and collaborate with designers, backend and data engineers to deliver polished, accessible, and performant cybersecurity and analytics products.
Top Skills: AngularCSS3CypressD3DockerEchartsFigmaGitGithub ActionsGraphQLHTML5JavaScriptJestKubernetesPlaywrightReactRechartsRestStorybookSupersetTypescriptVue
YesterdaySaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Information Technology • Software
Design and implement developer-facing UI from Figma to production using Hotwire (Turbo + Stimulus) and ViewComponents. Own the dashboard, API playgrounds, docs, marketing site, and data visualization. Optimize performance and bundle size, maintain a coherent component system, and ship polished, production-ready front-end with tests and CI/CD.
Top Skills: Ci/CdClaudeCursorEsbuildFigmaGitHotwireHTMLJavaScriptRuby On Rails 8SlackStimulusTailwind CssTurboTurbo FramesViewcomponent
18 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Mid level
Mid level
Artificial Intelligence • Big Data • Fintech • Financial Services
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.
Top Skills: Ci/CdCypressDevOpsGraphQLNext.JsPlaywrightReactWebpack
Reposted 17 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
Cloud • Software
Design and implement frontend applications using JS, CSS, React, and Flutter. Collaborate on technical specs and contribute to documentation, ensuring user experience and performance.
Top Skills: CSSDockerFlutterJavaScriptKubernetesLinuxReactRest ApisTypescript
Reposted 10 Hours AgoSaved
Hybrid
Belfast, Northern Ireland
Mid level
Mid level
Artificial Intelligence • Cloud • Software • Cybersecurity • Design • Generative AI
The Mid-Level Software Engineer will design and build full-stack applications using Python and Node.js for backend and React for frontend, working with cloud infrastructure and CI/CD pipelines while ensuring system observability and security.
Top Skills: AWSAzureDockerKubernetesNode.jsPythonReactTypescript
Reposted YesterdaySaved
In-Office
Belfast, Northern Ireland
Mid level
Mid level
Information Technology • Consulting
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.
Top Skills: AngularApollo ClientDockerGraphQLJestNext.JsReactReact NativeTypescriptVue
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Reposted YesterdaySaved
Hybrid
Belfast, Northern Ireland
Mid level
Mid level
Productivity • Software • Cybersecurity
The Frontend Software Engineer develops and enhances user interfaces using React and TypeScript, collaborating on architectural decisions and improving system performance.
Top Skills: ReactTypescriptWebgl
Reposted 24 Days AgoSaved
In-Office
Belfast, Northern Ireland
Mid level
Mid level
Information Technology • Consulting
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.
Top Skills: ReactTypescript
Reposted 10 Hours AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Blockchain • Financial Services • Cryptocurrency • Web3
The Software Engineer will design and maintain payment processing systems, mentor other engineers, and ensure security in client transactions within the crypto ecosystem.
Top Skills: JavaScriptNext.JsReactReact NativeRestful ApisTypescriptWebsockets
Reposted 3 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Entry level
Entry level
Artificial Intelligence • Machine Learning • Natural Language Processing • Sales • Software
As a Frontend Engineer, you'll craft user interfaces, write engineering requirement documents, build test suites, and integrate analytics for product success.
Top Skills: React NativeSQL
Reposted 3 Days AgoSaved
Remote
Belfast, Northern Ireland
Junior
Junior
Productivity • Software • Conversational AI
As a Frontend Software Engineer at Twilio, you will design, develop, and deploy new features for the Twilio Console platform, manage code through GitHub, and collaborate within a SCRUM team to improve the platform's capabilities while maintaining high engineering standards.
Top Skills: BuildkitePlaywrightReactTypescriptVitest
5 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Blockchain • Gaming • Cryptocurrency • NFT • Web3 • Generative AI
Build and maintain fast, intuitive frontend applications for blockchain and Web3 products. Collaborate with product, design, and engineering teams; develop reusable components and frontend architecture; integrate wallets and smart-contract interactions; improve performance, reliability, and accessibility; participate in technical planning and code reviews; mentor other developers and establish frontend best practices.
Top Skills: ReactSmart ContractsTypescriptWallet IntegrationsWeb3
7 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Fintech • Machine Learning • Software • App development • Conversational AI • Generative AI
Design and implement new website features and modify existing ones using React and TypeScript. Optimize performance, design technical solutions, split specifications into subtasks, perform code reviews, and ensure native UX/UI fidelity. Collaborate independently and apply SOLID and FRP concepts while working in a remote, distributed team.
Top Skills: Functional Reactive Programming (Frp)HTTPHttpsReactTypescriptWebsocketWss
Reposted 9 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Digital Media
The role involves developing high-quality Vue.js applications, creating interactions, collaborating with back-end engineers, and writing tests.
Top Skills: CSSElectronGitGitJavaScriptNode.jsRubyRuby On RailsSassTypescriptVue
20 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • HR Tech • Information Technology • Software
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.
Top Skills: .NetAzureBlazorC#Ci/CdDesign PatternsDockerFigmaGithub CopilotKubernetesSQL
Reposted 11 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Information Technology • Payments • Software
As a Senior Frontend Engineer, you'll develop seller-facing products, enhance the design system, and ensure high-quality TypeScript code delivery, while collaborating with teams.
Top Skills: CSSReactTypescript
13 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Machine Learning • Natural Language Processing • Software • Generative AI
Build and ship full-stack features for North, develop autonomous agents that access sensitive enterprise data, productionize state-of-the-art models, write minimal, secure low-resource code, and collaborate with researchers to deploy performant RAG/agentic applications while prioritizing security and user experience.
Top Skills: Agentic ApplicationsFoundation ModelsPythonRagReact
Reposted 13 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
Information Technology • Insurance • Professional Services • Consulting
The Software Engineer will develop high-quality responsive UIs for web/mobile, conduct user research, optimize applications, troubleshoot issues, and conduct code reviews.
Top Skills: AngularCSSGitHTMLJavaScriptNode.jsNoSQLPythonSQL
Reposted 14 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Blockchain
The Senior Frontend Engineer will develop features for a mobile application, collaborate with design and backend teams, and maintain code quality.
Top Skills: CSSReactReact NativeTypescript
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