Full Stack Developer (Drupal) (Information Technology/Software)

Our client is a leading Software, Information and Communication Technologies company, operates internationally (Athens, Brussels, Luxembourg, Copenhagen, Stockholm, London, Nicosia, Hong-Kong, Valetta, etc). They are a renowned supplier of IT services to government institutions, multinational corporations, public administrations and multinational companies, research and academic institutes.

Role Overview

Our client has a vacancy for a Full Stack Developer (Drupal) fluent in English, to offer his/her services as an expert who will be based in Brussels, Belgium. The work will be carried out either in the company’s premises or on site at customer premises. In the context of the first assignment, the successful candidate will be integrated in the Development team of the company that will closely cooperate with a major client’s IT team on site.

Job Type: Full-time | Permanent

Work Type: Onsite

Location: Brussels, Belgium

Requirements

• Master degree in IT or relevant discipline, combined with minimum 13 years of relevant working experience in IT
• 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
• 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
• 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
• Experience integrating RESTful APIs in Drupal
• Experience working with MySQL
• Familiarity with performance optimisation (e.g. caching strategies, lazy loading, query tuning)
• 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
• Experience working with JIRA, Confluence (or similar tools) and Agile workflows
• Ability to document technical procedures, configurations, and development choices clearly
• Acquia Certified Drupal Developer or equivalent Drupal certification would be an asset
• Excellent command of the English language

Responsibilities

• Develop, maintain, and optimise Drupal 10 back-end functionalities;
• Build and customize Twig templates for Drupal
• Implement and optimise existing modules or build scalable, secure, and performant custom ones based on business needs and following Drupal coding standards
• Troubleshoot and resolve back-end bugs, performance issues and integration mismatches
• Support deployment and environment management (e.g. local/ACC/PROD)
• Develop and maintain CKEditor custom components
• Provide business data architecture and systems processing guidance