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PHP Developer

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Coherent Solutions

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IT - Software Development

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Salary:

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Job Description:

The project is high-load Ad Server platform with a large number of users that helps selecting and delivering auction-based ads in real time. The goal is to migrate from a monolithic PHP architecture to Nest.js microservices and enhance functionality with new features. The migration has just started, offering the opportunity to influence architectural decisions and work on a challenging, performance-critical system.

Job Responsibility:

  • Navigate and refactor a tightly-coupled codebase where UI components are generically driven by backend entity types
  • Break down high cohesion between frontend and backend to enable independent evolution
  • Identify and eliminate architectural bottlenecks blocking new product requirements
  • Modernize patterns where the generic framework creates unnecessary complexity
  • Balance maintaining existing abstractions vs. introducing pragmatic solutions
  • Design and implement new API endpoints in Laravel and Nest.js
  • Manage API versioning and backward compatibility
  • Work with complex query filter system and entity relationships

Requirements:

  • 5+ years of experience in PHP and Laravel development
  • Experience working with microservices architecture
  • Experience working with SQL databases
  • Strong experience maintaining, refactoring, and improving complex, tightly coupled systems
  • Proven track record of decomposing monolithic applications into modular, scalable components
  • Solid understanding of dependency injection, service-oriented architecture, and interceptor patterns
  • Knowledge of English - from B2

Nice to have:

  • Experience with Nest.js or similar Node.js frameworks
  • AdTech domain knowledge (DSP, SSP, programmatic advertising)
  • Hands-on experience modernizing legacy systems or performing large-scale migrations
  • Strong understanding of design patterns: Factory, Strategy, Observer, Repository
What we offer:
  • Technical and non-technical training for professional and personal growth
  • Internal conferences and meetups to learn from industry experts
  • Support and mentorship from an experienced employee to help you professional grow and development
  • Internal startup incubator
  • Health insurance
  • English courses
  • Sports activities to promote a healthy lifestyle
  • Flexible work options, including remote and hybrid opportunities
  • Referral program for bringing in new talent
  • Work anniversary program and additional vacation days

Additional Information:

Job Posted:
December 07, 2025

Work Type:
Remote work
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