MGID is hiring a PHP Backend Developer (Middle–Senior) to build and maintain the backend services and APIs that power our advertiser dashboards. Your work sits at the core of how advertisers create campaigns, track conversions, and optimize performance.

What You'll Do

Develop and maintain backend services, microservices, and APIs
Integrate third-party services and internal libraries
Model relational schemas, write optimized queries, and tune database performance
Design, version, and document RESTful APIs using OpenAPI/Swagger
Write and maintain unit, integration, and module tests
Ensure high code quality via reviews, linters, and static analysis
Configure CI/CD pipelines and collaborate with DevOps on deployments
Implement authentication, authorization, and input validation best practices
Participate in architecture and scalability discussions, breaking down monoliths into services when appropriate
Share knowledge with teammates through documentation, walkthroughs, and mentorship

What We're Looking For

3+ years of professional PHP (7/8) development experience
Strong skills in Symfony (or another MVC framework with readiness to transition)
Strong SQL expertise (MySQL or PostgreSQL)
Experience designing, implementing, and documenting RESTful APIs
Apply unit and integration testing consistently to ensure code reliability and maintainability
Fluent in Ukrainian and have at least intermediate English
Take initiative, work independently, and articulate your ideas with clarity
Welcome feedback and approach problems with a structured, analytical mindset

Nice to Have

Experience with Kafka, Redis, or ClickHouse
Worked on performance optimization at scale
Exposure to CI/CD pipelines and DevOps collaboration
Possess a Bachelor’s degree in Computer Science or related field

Technical Stack

Languages: PHP 7/8
Frameworks: Symfony
Databases: MySQL, PostgreSQL, ClickHouse
APIs: RESTful APIs, OpenAPI/Swagger
Tools: Kafka, Redis

Team & Environment

You will join a team of over 800 colleagues, collaborating closely with Product Owners, Frontend Developers, QA Engineers, and DevOps specialists, reporting to a Tech Lead. We thrive on innovation, collaboration, and a passion for AdTech, with a culture built on openness, transparency, and a shared drive for excellence.