Senior Full-Stack (PHP+JS) Engineer (Europe) Offline

Key Requirements:

• At least 4+ years of commercial experience as a Full-Stack Developer;
• Experience with PHP and object-oriented programming principles;
• Strong knowledge of Vanilla JavaScript (ES5/ES6);
• Web Concepts — DOM manipulation, HTML rendering, Basic Web APIs and HTML page structure;
• Familiarity with client/server architecture (MVP) and debugging tools like xdebug and browser dev-tools;
• Hands-on experience with MySQL or other relational databases;
• English — Upper-Intermediate or higher.

Will be a plus:

• Experience with React.js;
• Hands-on knowledge of Redis;
• Background in AdTech (SSP/DSP, DFP, header bidding, floor price optimization, etc.);
• Familiarity with Agile methodologies.

What you will do:

• Work on publisher integrations — customizing video player behavior, visual modifications, and player API usage across various environments;
• Develop and maintain backend operational tools for debugging, monitoring, and platform support;
• Participate in publisher onboarding — player setup, content API integrations (MRSS), and bulk operations;
• Build and optimize content and ad targeting solutions using key/value targeting and custom HTML tags;
• Investigate and resolve complex bugs in both frontend and backend systems;
• Work on performance optimization and SEO improvements (Web Vitals, DevTools analysis);
• Research, develop, and document new features and enhancements for long-term stability and scalability;
• Contribute to monetization logic — implement new integrations, data research, and advanced backend fixes.

Why Join Us?

• Be part of a friendly international team, working together on interesting global projects;
• Enjoy many chances to grow, learn from mentors, and work on projects that make a real difference;
• Join a team that loves fresh ideas and supports creativity and new solutions;
• Work closely with clients, building great communication skills and learning directly from their needs;
• Thrive in a workplace that values your needs, offering flexibility and a good balance between work and life