Senior Backend Engineer (PHP)

Some of the core duties include:

• Interpret, define, and develop software solutions based on written requirements and technical specifications.
• Identify opportunities for improvement in existing products and implement enhancements across the platform.
• Troubleshoot, test, and maintain core applications and databases to ensure performance, reliability, and scalability.
• Collaborate with QA to define acceptance criteria and assist with debugging and issue resolution.
• Contribute to the creation and upkeep of comprehensive technical documentation.
• Write clean, maintainable, and well-structured code that adheres to established coding standards and best practices.
• Work effectively within globally distributed, cross-functional teams.
• Participate in mentoring, coaching, and knowledge-sharing initiatives to support team development.

• This is a hybrid role that would require presence in our Sofia or Plovdiv office at least twice per week, as agreed.
•  We have a salary transparency policy and the salary budget for this role is €50,500 to €56,000 gross per annum.,

The experience and skills needed:

• 5+ years of experience in backend web application development, with strong proficiency in PHP 8+ and MySQL.
• Solid understanding of OOP principles, SOLID, and modern software engineering best practices.
• Proven experience applying design patterns to build maintainable and scalable solutions.
• Hands-on experience with Unit and Integration testing (e.g., PHPUnit, Pest).
• Strong working knowledge of SQL, RESTful APIs, and GraphQL.
• Ability to leverage AI‑assisted development tools to improve productivity, code quality, and documentation.
• Excellent English communication skills and the ability to collaborate effectively within cross-functional, globally distributed teams.
• Comfortable working in environments that follow strong Agile practices, including iterative development, continuous improvement, and close collaboration with product 

The interview process:

• An online interview with the Senior Talent Partner and Engineering Lead. This should last no longer than 40 minutes.
• Final video interview of 75 minutes that will consist of 3 stages. This includes: 
  • 50 minutes to discuss your experience and technical abilities 
  • 15 minutes to review and discuss a coding exercise
  • 10 minutes to ask questions you may have