Senior Jahia CMS Application Developer Job ID: JP053981

Location: Wallonia, Belgium (Hybrid)

Role Overview

We are seeking a Senior Jahia CMS Application Developer to support the development, maintenance, and optimization of a large-scale shared web platform hosting multiple public sector websites. The role focuses on Jahia CMS customization, web application development, platform evolution, and technical support within a high-traffic environment.

• Maintain and evolve the shared Jahia CMS platform and related services
• Design and implement technical and functional solutions aligned with business needs
• Develop and maintain templates, modules, and components within Jahia CMS
• Ensure coherent functional and technical architecture across the shared platform
• Perform corrective and evolutionary maintenance activities
• Validate and deploy developments on the shared Jahia environment
• Produce and maintain technical and functional documentation
• Provide technical recommendations and code quality guidance to developers
• Support and train CMS users and key stakeholders
• Maintain a catalog of reusable web components and standards

• Strong expertise with Jahia CMS and Java development
• Experience with JSP/Servlet, OSGI, Spring Framework, and REST APIs
• Solid knowledge of HTML, CSS, Bootstrap, JavaScript, and JQuery
• Experience with Angular and/or React
• Knowledge of GraphQL API and JCR API
• Experience with PostgreSQL databases and Linux (Red Hat) environments
• Familiarity with Apache, Tomcat, Docker/Podman, Maven, WebPack, Git, Jenkins, and Nexus
• Understanding of WCAG web accessibility standards
• Experience with analytics and SEO tools such as Matomo or Google tools

• Strong communication and technical documentation skills
• Ability to explain technical concepts to non-technical users
• Proactive, analytical, and solution-oriented mindset
• Strong organizational and problem-solving abilities
• Ability to work autonomously and collaboratively in a team environment
• Comfortable working under pressure in production environments

• French: Fluent/Native proficiency required

Focus of the Role

Supporting the continuous improvement, industrialization, and maintenance of a large-scale shared Jahia CMS platform while ensuring high-quality web solutions, scalability, and operational reliability.