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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Front End Developer React - **Company:** Keystone Solutions - **Location:** Dessel, Belgium - **Experience:** Experienced - **Contract:** Temporary contract - **Skills:** JavaScript (Programming Language), Web Accessibility, Application Programming Interfaces (APIs), Agile Methodology, Software Applications, HTML5, Unit Testing, Microsoft Azure, Cascading Style Sheets (CSS), Data Integration, Software Debugging, Knowledge Management, Responsive Web Design, TypeScript, ReactJS, Ios Frameworks, Backend, Git, Integration Tests, Information Technology, Data Management, Front End Software Development, Restful APIs - **Published:** July 16, 2026 - **Apply:** https://www.adzuna.be/details/5802367231 ## About the Role * Medior profile (approximately 2-3 years of experience) * Bachelor's degree or equivalent through experience * Strong in maturity, drive, and team fit * Strong focus on user experience and quality * Interest in modern front-end technologies and continuous improvement If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal., * Agile - Level: Intermediate - Most recent: This year * Azure DevOps - Level: Intermediate - Most recent: This year * CSS3 - Level: Intermediate - Most recent: Any time * Frontend & Integration Testing - Level: Intermediate - Most recent: This year * Frontend Security - Level: Intermediate - Most recent: This year * GIT - Level: Intermediate - Most recent: This year * HTML5 - Level: Intermediate - Most recent: Any time * Javascript - Level: Intermediate - Most recent: This year * React - Level: Intermediate - Most recent: This year * Responsive Design - Level: Intermediate - Most recent: Any time * REST API integratie - Level: Intermediate - Most recent: Any time * TypeScript - Level: Intermediate - Most recent: Any time * UX Design - Level: Intermediate - Most recent: This year Language requirements: Dutch or French Level Native or bilingual proficiency English Level Professional working proficiency ## Description We are seeking a Front-End Developer (React) for a consultancy mission at a client site representing Keystone Solutions. In this role, you will be responsible for developing, implementing, and maintaining user-friendly, high-performance, and secure front-end applications within a React environment to ensure a stable and modern user experience that optimally supports business processes and end-users., * Contribute to the renewal of hardware and/or software components and perform necessary functional or technical analyses to meet the needs of end-users and the company. * Manage and follow up on technical needs within front-end applications. * Advise on technology choices (React, UI frameworks, tooling). * Design solutions with a focus on user experience and front-end architecture. * Translate functional needs into user-friendly interfaces. * Develop or determine technical requirements for, as well as implement, new hardware or software and applications to provide a quality set of equipment and applications. * Develop front-end applications using React. * Work according to Agile methodology using Azure DevOps. * Integrate front-end components with APIs and back-end services. * Utilize Git for version control. * Monitor, maintain, test, and secure the IT infrastructure and/or software applications to ensure a high degree of reliability, security, and usability for end-users. * Perform unit and integration testing. * Apply front-end security best practices. * Ensure performance, accessibility, and user experience. * Maintain qualitative and stable front-end components. * Maintain data structures and/or system settings, providing a performant environment for data management and ensuring backups of user files to guarantee the correctness of business data and quick recovery in case of loss or damage. * Work with data from APIs and back-end systems. * Ensure correct processing and presentation of data. * Support data integration within front-end applications. * Analyze, resolve, and follow up on application or network-related issues to restore the operation of these applications or networks. * Debug front-end issues. * Provide second-line support. * Proactively avoid production issues. * Formulate proposals for renewal and optimization of the activity domain to meet current and future business needs. * Propose improvements in front-end architecture and development practices. * Keep up with developments within the React ecosystem. * Promote usability, accessibility, and performance. * Ensure knowledge retention and keep data and documentation up to date for your area of expertise, as well as communicate information to maintain a correct and complete picture of all available components and applications throughout their lifecycle. * Document front-end components, guidelines, and architecture. * Share knowledge within the team. * Work according to structured documentation standards. Technical Requirements: * React * JavaScript / TypeScript * HTML5 & CSS3 * Responsive Design * REST API integration * Git * Azure DevOps * Agile working methodology * Front-end & Integration testing * Front-end security & accessibility best practices * Experience with UX Design is a strong plus ## Related Videos - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) ## Related Articles - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023) - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [The Netherlands – Europe’s powerhouse for software development?](https://www.wearedevelopers.com/magazine/31-the-netherlands-europe-s-powerhouse-for-software-development)