374 frontend developer English-speaking jobs in Brussels

Development of features to enhance the user experience. Building reusable code for future use. Understanding and implementation of security and data protection. Cross-platform optimisation. Design responsive applications. Participating in the design and creation of scalable software. Maintenance of code integrity and organisation.

About the Role: As a Senior Vaadin Developer , you will be the bridge between this powerful technology ... What you'll do Design, develop, and optimize the Vaadin-based frontend of our core platform Collaborate ... You'll own the design and development of a modern, intuitive Vaadin-based frontend that enables customers ... quality through testing, code reviews, and continuous improvement What you bring Proven experience in frontend ... intuitive and responsive for end users Contribute to architectural decisions that shape the future of our frontend

Your tasks:Development of front-end website architecture;Design of user interactions on web pages and development of features to enhance the user experience;Understanding and implementation of security and data protection and cross-platform optimization;Design responsive applications and design and develop APIs;Compile and analyze data, processes, and codes to troubleshoot problems and identify ar

Developer, you will join theDFIRteam withinCERT-EU, responsible for investigating and responding to ... the protection and resilience of critical digital infrastructures.We are currently seeking aSvelteKit Frontend ... institutions.In this role, you will contribute to the development of an open-source incident response frontend ... role within a highly skilled, mission-driven teamExposure to open-source development and modern frontend ... full feature coverage.Your responsibilities will include:Continuing the development of the DFIR-IRIS frontend

Knowledge of backend and frontend architecture and CI/CD practices. ... This role offers the opportunity to influence core technical decisions, improve developer efficiency, ... Improve system performance, maintain CI/CD practices, and implement automation to increase developer ... You will work across backend APIs, data layers, and frontend interfaces, delivering high-quality features ... Accountabilities Design, develop, and maintain scalable backend and frontend features using TypeScript

Full Stack Developer (Angular / .NET / Lit)Location: BrusselsStart Date: ASAPEnd Date: 31st December ... 2026We're looking for a Full Stack Developer to join an innovative digital platform project that& ... sprint ceremonies• Review and deliver assigned user stories and technical tasks• Develop and maintain frontend ... working together to deliver modern, scalable features.This is a hands-on development role focused on both frontend ... Proven Angular (v18+) skills• Solid backend development with .NET 8• Full-stack development experience (frontend

Frontend Developer, BrusselsKey Responsibilities:Software Development : Design and develop scalable, ... Vite for fast bundling and development environment setup, ensuring rapid build times and optimal developer ... Architecture : Contribute to and implement Micro frontend architecture, ensuring seamless integration ... React Hook Form for form management and Ant Design for consistent and responsive UI design.Micro frontend ... Design for UI components and design systems.Hands-on experience in designing and implementing Micro frontend

products, primarily focusing on backend development, with occasional frontend work. ... Senior TypeScript Developer Contract, 6 months Brussels, 1 day a week on site (flexible) Mission Context ... You'll also help build Developer Portals with documentation, tooling, and best practices. ... Mission Objective: As a Senior Developer, you'll craft and deploy features across cloud-native software

Responsibilities Design, develop, and maintain full-stack applications using Java (backend) and React (frontend ... We're looking for an experienced Full-Stack Developer (Java + React) to join a major organisation ... Logistics Position: Freelance Full-Stack Developer – Java & React Duration: 12-month contract (with potential ... Essential Skills & Experience Strong professional experience as a Full-Stack Developer using Java (Spring

We are seeking an expert Senior Frontend Developer to join our Data Platform team within the Defense ... In this role, you will not just build dashboards; you will architect and build the frontend foundation ... missionKey ResponsibilitiesPlatform Architecture: Architect and develop a scalable, component-based frontend ... jobs, object storage (MinIO), and complex data pipelines.System Connectivity: Seamlessly integrate frontend ... members.Troubleshooting: Independently diagnose and resolve complex issues within the platform's frontend

We are currently seeking a Full-Stack Developer to join one of our clients' teams. ... Responsibilities:  Develop full-stack applications using Node.js, Python, and modern frontend frameworks ... and deployment pipelines   Tech Environment:  Backend: Node.js, Python (FastAPI, Flask), Express   Frontend

Full Stack Node.JS developer - European InstitutionAre you looking for the next step in your career? ... Implement microservices architecture using for backend functionality, ensuring seamless integration with frontend ... science ;Strong proficiency in JavaScript ;Familiarity with frameworks such as React, Angular, or for frontend

Freelance Fully Remote Full Stack Python Developer We are looking for a Full-Stack Engineer with expertise ... You will work on an evolving codebase, contributing to backend and frontend development, microservices ... Responsibilities Develop and maintain backend services using Python, FastAPI, and SQLAlchemy Build scalable frontend

Development of features to enhance the user experience. Building reusable code for future use. Understanding and implementation of security and data protection. Cross-platform optimisation. Design responsive applications. Participating in the design and creation of scalable software. Maintenance of code integrity and organisation.

Development of features to enhance the user experience. Building reusable code for future use. Understanding and implementation of security and data protection. Cross-platform optimisation. Design responsive applications. Participating in the design and creation of scalable software. Maintenance of code integrity and organisation.

Company Description As a member of the development squad, the Software Developer will design and develop

We are seeking a full stack developer. ... :Participate in daily Scrum stand-upsReview and implement assigned user storiesDevelop and maintain frontend ... amazing things possible when you bring the right people and the right technologies together.Full Stack Developer

Full Stack Developer (Java – React)We're looking for an experienced Full Stack Developer to join ... principlesCollaborate closely with analysts, testers, and product owners in an Agile setupOptionally support the frontend

We are seeking a highly skilled Senior Fullstack Developer to join our client's team in Brussels. ... Frontend development with React (TypeScript), webpack, ES6+, UI built with Ant Design; testing with Jest ... Frontend: React with TypeScript, webpack, ES6+; UI with Ant Design; testing with Jest and React Testing

development with a portfolio of complex mobile appsExperience integrating mobile apps with backend-for-frontend ... Our client is looking for a highly experienced Senior React Native Developer to help shape, maintain ... to improve insights into performance and user behaviourBuild and maintain internal tools supporting developer ... Strong collaboration with multidisciplinary teamsTrack record of improving performance, build times and developer