Senior Drupal Developer

We are seeking a highly experienced Senior Freelance Drupal Developer for a temporary replacement contract of 70 days . In this role, you will take full ownership of advanced front-end and back-end development, handling intricate custom modules, fine-tuning complex site configurations, and ensuring seamless third-party integrations. As a senior engineer, you must be able to hit the ground running with minimal onboarding. JOB DESCRIPTION: Write, review, and implement highly complex custom Drupal modules and hooks. Build and maintain high-performance, responsive Drupal themes using Twig, HTML5, CSS3, and JavaScript. Configure and optimize Drupal core, contributed modules, complex views, taxonomy, and content types. Diagnose deep technical bugs, execute secure core/module updates, and optimize website performance during the coverage period. Deliver clean, secure, and well-documented code that strictly follows Drupal coding best practices. SKILLS AND TECHNOLOGIES: Experience: 13+ years of professional web development experience , with an extensive and proven track record in Drupal 9 / 10 . Expert-level knowledge of PHP, OOP (Object-Oriented Programming), and MySQL/MariaDB database management. Strong command of HTML5, CSS3/SASS, modern JavaScript, and Twig templating engines. Deep familiarity with professional Git workflows, Composer dependency management, and Drush. Availability: Ready to start immediately or on short notice to cover the full 70-day window. Deadline 30/09/26 Delivery mode : Remote from EU Only EU Citizens