> Markdown version of [/jobs/ext/3904227-web-developer-senior](https://www.wearedevelopers.com/jobs/ext/3904227-web-developer-senior). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Web Developer Senior - **Company:** Cronos Europa - **Location:** Brussel, Belgium - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Unit Testing, Software Bug Management, Configuration Management, Software Quality, Knowledge Management, Software Maintenance, Software Engineering, Software Systems, System Testing, Web Applications, Software Troubleshooting, Build Management, Software Version Control - **Published:** October 25, 2026 - **Apply:** https://www.careerjet.be/jobad/be39738e1231665ddb5644c8ae36dcdd46 ## About the Role · Strong web/software development skills · Excellent technical and analytical capabilities · Ability to understand business requirements and translate them into practical technical solutions · Good understanding of software quality, testing and application maintenance · Strong troubleshooting and problem-solving skills · Ability to produce clear and comprehensive technical documentation · Strong communication and collaboration skills · Ability to work effectively with both technical and business stakeholders · Good understanding of structured application development and maintenance methodologies · Good knowledge of English, particularly for producing technical and project documentation · Previous knowledge of European institutional workflows and business environments is considered an advantage. If you wish to integrate a dynamic structure on a human scale while working with the latest technologies, don't wait anymore and join Cronos! ## Description We are looking for an experienced Web Developer to join our team in Brussels and contribute to the development, maintenance and continuous improvement of a key Enterprise Records Management System within a European institutional environment. You will work across the software development lifecycle, from analysing requirements and designing solutions to development, testing, deployment and application support. A strong focus will be placed on corrective and evolutionary maintenance, ensuring that applications remain reliable while continuously adapting to new business and technical requirements. Responsibilities · Develop, maintain and improve web applications and software solutions. · Analyse business and technical requirements and translate them into effective technical solutions. · Implement corrective and evolutionary maintenance, including bug fixes, refactoring and new functionalities. · Participate in solution design and implementation. · Develop and maintain high-quality, maintainable source code. · Create and maintain automated unit tests, contributing to functional and system testing. · Support application builds, releases and deployments. · Ensure the availability and continuity of applications under maintenance. · Perform configuration management and provide third-level technical support. · Contribute to service request, incident, problem and change management activities. · Produce and maintain comprehensive project, application and technical documentation. · Collaborate closely with business stakeholders, project managers, technical teams and infrastructure teams. · Participate in technical and business meetings related to the applications in scope. · Contribute to knowledge sharing and knowledge transfer to ensure long-term service continuity. Specific Expertise · Web and software development · Software development lifecycle · Corrective and evolutionary application maintenance · Functional analysis and requirements interpretation · Solution design and implementation · Source code and version management · Automated unit testing · Functional and system testing · Build and deployment processes · Configuration management · Third-level application support · Incident, problem and change management · Technical documentation and knowledge management