Full-stack developer - Brussels - Near site

1- Development and Maintenance

• Develop, maintain, and optimise Drupal 10 back-end functionalities
• Build and customize Twig templates for Drupal
• Implement and optimise existing Commission modules ("OpenEuropa" components) or build scalable, secure, and performant custom ones based on business needs and following Drupal coding standards
• Develop and maintain CKEditor custom components
• Implement data structures such as content types, views, blocks, taxonomies, and entity references
• Integrate RESTful APIs, including content synchronisation and dynamic data visualisation
• Support multilingual setups
• Optimise performance and scalability of the platform

2- Platform Operations and Support

• Troubleshoot and resolve back-end bugs, performance issues and integration mismatches

• Support deployment and environment management (e.g. local/ACC/PROD)

• Document development, deployment, and configuration procedures

3- Collaboration and Agile processes

• Use GitLab for version control and CI/CD workflows
• Manage work in JIRA or similar ticketing systems following Agile/Scrum methodologies
• Participate in scrum meetings, technical reviews, sprint planning, and knowledge-sharing activities
• Collaborate closely with developers, business analysts, and end-users

Do you have experience in Wireframing?, * At least 5 years of specific expertise in Drupal development

• At least 2 years of experience in PHP, Twig, and Drupal theming
• At least 2 years of experience working with multilingual/multisite Drupal platforms.

KNOWLEDGE AND SKILLS We are seeking a versatile Full-stack Developer with expertise in Drupal. The ideal candidate should be comfortable developing secure and scalable Drupal back-end solutions as well as implementing modern, responsive front-end interfaces that meet the European Commission's accessibility and performance standards. Following skills and knowledge are required for the performance of the above listed tasks: 1- Drupal Back-End Expertise

• Proven experience with Drupal 9/10/11
• Strong command of PHP and Symfony components
• Experience with Drupal configuration management, using Drush, Composer, and Git
• Familiarity with custom entities, field types, plugins, hooks, and services
• Understanding of multilingual setups, translation workflows, and editorial permission structures
• Knowledge of Drupal security practices, including secure coding, form validation, and sanitisation

2- Drupal Front-End Expertise

• Experience theming Drupal using Twig, HTML5, CSS3, and modern JavaScript (ES6+)
• Ability to transfer wireframes into functional, responsive and accessible interfaces
• Understanding of accessibility requirements (e.g., WCAG) and user-centred design principles

3- API and Integration

• Experience integrating RESTful APIs in Drupal

4- Database and Performance

• Experience working with MySQL
• Familiarity with performance optimisation (e.g. caching strategies, lazy loading, query tuning)

5- DevOps and Version Control

• Experience using GitLab and related CI/CD pipelines
• Familiarity with Docker or other containerization tools
• Ability to work across multiple environments (local, ACC, PROD) and ensure smooth deployment cycles

6- Collaboration and Documentation

• Experience working with JIRA, Confluence (or similar tools) and Agile workflows
• Ability to document technical procedures, configurations, and development choices clearly
• Skilled in estimating work, managing priorities, and delivering under deadlines

From day one, you'll find opportunities for personal and professional development within a supportive team environment. We offer:

• A permanent role at a leading tech project firm (subcontractor also possible).

• A hybrid work schedule, blending in-office collaboration with the convenience of working from home.

• Continuous learning and development through SEIDOR Academy.

• A package including salary and additional annual bonus, working equipment, phone and other benefits.

• A dynamic international workplace with diverse teams.

• A commitment to your well-being, work-life balance, and career growth.

• Rapid advancement opportunities in a short period of time.

• Engaging events and a comprehensive onboarding program.

At SEIDOR, your growth is our success, and we strive to make our workplace feel like home. Discover the nine core aspects of our culture that define us at SEIDOR:

https://www.seidor.com/en-es/talent

We are on the lookout for a Full-stack developer to join our team for working with European Institutions based in Brussels in an Near site position. Get to know us - SEIDOR At SEIDOR, we drive client transformation and competitiveness with cutting-edge technology and innovation , with a relentless focus on the human element and a commitment to nurturing talent and sustainable growth. As a diverse and inclusive company that champions equal opportunity, we boast a team of over 8,000 professionals in our global presence across 45 countries in Europe, Latin America, the USA, the Middle East, Africa, and Asia. We believe the digital world's challenges require not only the best technologies and partnerships but most importantly, the best people. That's where you come in - we need you to help us scale new heights. For this position you would be working with our client from the European institutions.