Senior Backend Engineer (PHP / Symfony) - Room Estate team

We are looking for a Senior Backend (PHP) Engineer to join one of our long-term partners, Room Estate. The role is focused on developing a modern Symfony backend service that will work alongside an existing Drupal-based system, with a strong long-term focus on scalable architecture and gradual system modernization.
You will work closely with the mobile developer and have strong ownership over backend architecture, API design, and technical decisions.

What You’ll Do
Design and develop REST APIs using PHP 8+ and Symfony
Build scalable backend services integrated with existing Drupal and MySQL systems
Work on cloud-native and modular architecture solutions
Design database structures, optimize queries, and improve system performance
Collaborate with the Flutter developer on API contracts and integrations
Contribute to architectural decisions and long-term system evolution
Write clean, maintainable, and well-tested code
Participate in code reviews and technical improvements
Requirements
Strong experience with PHP and Symfony in production environments
Experience building REST APIs and backend services from scratch
Excellent understanding of MySQL and database design
Experience with testing (PHPUnit, integration/unit testing)
Solid understanding of software architecture and clean code principles
Experience with Git workflows and code reviews
Ability to work independently and take ownership
Nice to Have
Drupal experience
AWS knowledge
Docker / DDEV experience
Experience with shared-database or microservice architectures
Experience building mobile-focused APIs

What We Value
Ownership and proactive mindset
Strong communication and transparency
Pragmatic problem solving
Willingness to suggest improvements and drive technical decisions
Ability to work independently in a fast-moving environment
Why you'll love working here:
Private health insurance
Flexible work model – hybrid or remote
Equipment of your choice (laptop, monitor, accessories)
High-growth company with innovative products
Supportive, international team
Budget for professional development (courses, books, conferences)
English and German language lessons during working hours
Nice office in Belgrade with a stocked kitchen and game area
Opportunity to learn, grow, and make a real impact
If you are looking for an environment where you can grow professionally, learn from the best in the field, balance work and life habits and have a pleasant and enthusiastic environment, please submit your CV in English.