Senior PHP Developer

SINGUParis Township, MI
Hybrid

About The Position

We're looking for a Senior PHP Developer to join the Technical Account Management team, responsible for delivering customizations and dedicated functionalities for large enterprise clients, often international. The team focuses on adapting existing modules or building custom solutions tailored to specific customer needs. A significant part of the work involves data imports and system integrations, where security, data correctness, and database performance are critical. This is a hybrid position based in Kraków – 2-3 days per week from the office.

Requirements

  • Strong commercial experience in PHP backend development (5+ years)
  • Expert-level knowledge of relational databases, especially PostgreSQL – query optimization, indexing, execution plans
  • Proven experience in designing and implementing REST APIs
  • Experience building and maintaining data import pipelines and external system integrations
  • High attention to application security (secure coding practices, input validation, data protection)
  • Strong focus on performance and scalability, especially for database-heavy and high volume operations
  • Ability to take full ownership of delivered solutions – from design to deployment
  • Fluent English and Polish to ensure smooth communications with team colleagues and clients

Nice To Haves

  • Familiarity with React
  • Experience with the Phalcon framework
  • Experience with PostgreSQL performance tuning
  • Knowledge of Docker and containerized development environments
  • Background in customization-heavy or enterprise systems
  • Experience working in a product-oriented organization

Responsibilities

  • Delivering customizations and dedicated functionalities for large enterprise clients.
  • Adapting existing modules or building custom solutions tailored to specific customer needs.
  • Performing data imports and system integrations.
  • Ensuring security, data correctness, and database performance in all delivered solutions.
  • Taking full ownership of delivered solutions – from design to deployment.

Benefits

  • Competitive Salary Range
  • A fantastic, engaged, and experienced team
  • An environment open to innovation
  • A family-like atmosphere with a "you" culture
  • Annual budget for training & education
  • Flexible working hours
  • Private healthcare (including dental & vision care)
  • Extra day off for medical check-ups
  • Annual team offsite
  • Top-notch Apple equipment
  • Monthly themed breakfasts
  • Referral Program
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