(Senior) Backend Developer - PHP (m/f/d)

We’re looking for an experienced Backend Developer -PHP (m/f/d) to join one of our partner companies and develop their backend IT strategies.

In your day-to-day work, you’ll focus on the new and further development of the platform while having the opportunity to contribute to various projects.

Join our partner company: A dynamic company revolutionising the book industry through self-publishing platforms. With a focus on innovation, they’re driving the publishing world into the digital age, blending the agility of a startup with the backing of an established firm.

• Develop and enhance our partner company’s new platform (Symfony, API Platform, MySQL, Kubernetes/Rancher)


• Collaborate with the team to conceptualise new backend components


• Ensure compliance with coding guidelines and contribute to their ongoing development


• Maintain and improve the existing backend tech stack (Symfony, Zend)


• Engage in continuous personal development through training, research, and team collaboration

• Strong knowledge of PHP 8 and frameworks—ideally Symfony and/or API Platform


• Proficient in server-side debugging


• Experience with version control systems (Git)


• Understanding of unit testing and a commitment to maintainable, readable code


• Comfortable working with Linux


• Experience with agile development methodologies, such as Scrum or Kanban, is a plus


• Independent work style and openness to new technologies


• Friendly and motivated team player


• Excellent communication skills in German. English is a plus

Please note that we are looking for support in Germany for our partner company. Eligibility to work within the EU is required as well.

• Independent work with a high degree of self-organisation


• A friendly team focused on continuous development and process optimization


• Agile working methods that promote short decision-making processes


• A bright loft workplace in the heart of Berlin with fresh fruit, coffee, cold drinks, snacks, and great colleagues


• Flexible working hours and options for remote work within Germany


• A family-like working atmosphere, enhanced by regular events such as game nights, group yoga, cooking or karaoke

Apply below and become a part of our success story!

Project A is committed to diverse and equal opportunities hiring for all – applicants, candidates, and employees alike. We value humans – with all our glorious multifaceted backgrounds, perspectives, and experiences – and look forward to your application.