Frontend Developer, React

Jobtailor; Brussel Hoofdstad; Sur place; EUR 65 000 - 90 000; Plein temps

Résumé du poste

Jobtailor is seeking an experienced Front-End Developer in Belgium to design, build, and optimize advanced React/TypeScript applications. You will contribute to dashboards, data-heavy interfaces, and scalable components within a collaborative, cross-functional team.

Join a multidisciplinary environment focused on renewable energy solutions, applying modern tooling, design systems, and performance best practices to deliver impactful digital products.

Qualifications

• University degree in Computer Science or equivalent.
• 4+ years of Front-End experience focused on React.
• Proficient in English (written and spoken).
• Strong in React and TypeScript development.
• Experience with performance optimization, debugging, and refactoring.
• Familiar with design systems and UI accessibility.

Responsabilités

• Develop, maintain, and evolve high-quality React/TypeScript applications, translating product and design requirements into robust, scalable features.
• Build and improve core product functionality in collaboration with product managers, designers, and backend engineers, ensuring a seamless user experience.
• Design and implement performant, data-heavy interfaces capable of handling large datasets efficiently.
• Identify, analyse, and resolve performance bottlenecks across the front-end using modern React optimization techniques.
• Create and maintain reusable UI components within a shared design system (Material UI-based).
• Contribute to architectural decisions and improve codebase structure and readability.
• Participate in code reviews, promoting high engineering standards and knowledge sharing.
• Implement secure front-end patterns, including user authentication and role-based access flows.
• Collaborate in a multidisciplinary environment to deliver digital solutions in renewable energy space.

Connaissances

React

TypeScript

Frontend performance optimization

English communication

Formation

Bachelor's degree in Computer Science or equivalent

Outils

Material UI

Redux Toolkit

Playwright

React Testing Library

Highcharts

Nx

Vite

ESLint

Prettier

Git

Azure DevOps

Docker

Description du poste

Responsibilities

• Develop, maintain, and evolve high-quality React/TypeScript applications, translating product and design requirements into robust, scalable, and maintainable features.
• Build and improve core product functionality in collaboration with product managers, designers, and backend engineers, ensuring a seamless and consistent user experience.
• Design and implement performant, data‑heavy interfaces (e.g. dashboards, tables, and charts) capable of handling large and complex datasets efficiently.
• Identify, analyse, and resolve performance bottlenecks across the front‑end using modern React optimisation techniques and best practices.
• Create and maintain reusable UI components within a shared design system (Material UI‑based), ensuring consistency, accessibility, and scalability.
• Contribute to architectural decisions and continuously improve the structure, readability, and maintainability of the codebase.
• Participate in code reviews, promoting high engineering standards, clean code practices, and knowledge sharing within the team.
• Implement secure and reliable front‑end patterns, including user authentication and role‑based access flows where applicable.
• Collaborate in a multidisciplinary environment with developers, domain experts, and stakeholders to deliver impactful digital solutions in the renewable energy space.

Requirements

• You hold a University degree in Computer Science (or equivalent) and have 4+ years of Front‑End experience (React focus).
• You are proficient in English (spoken and written).
• You are strong in React and TypeScript development.
• You are experienced in performance optimisation and debugging, and you know how to identify and resolve issues efficiently.
• You have experience working with existing codebases, including refactoring, improving structure, and building new features on top of legacy decisions.
• You understand UI/UX principles and build user‑friendly interfaces.
• Bonus points for:
  • Other languages: you will have international colleagues speaking French, Dutch and other languages
  • Experience with: Material UI (MUI) or similar component libraries, Redux Toolkit (RTK) for state management, frontend architecture patterns, Playwright for end‑to‑end testing and react testing library, Highcharts or similar data visualisation libraries, Nx and/or Vite as build frameworks (and monorepo setup), linting and formatting tools (e.g. ESLint, Prettier), Git, Docker and Azure DevOps pipelines.

Core Competencies

Proficient in developing and maintaining high-quality React and TypeScript applications, with a strong focus on performance optimisation, user‑friendly interface design, and collaboration in multidisciplinary teams. Experienced in implementing secure front‑end patterns and contributing to architectural decisions for scalable solutions.