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C# Backend Developer
  • Warszawa
C# Backend Developer
Warszawa, Warszawa, mazowieckie, Polska
Square One Resources Sp. z o.o.
28. 9. 2025
Informacje o stanowisku

The company manages large-scale advertising investments and provides advanced services in digital marketing, and innovative technology solutions. Acting as the central hub for several international agencies, the organization plays a key role in driving data-driven marketing strategies worldwide.

C# Backend Developer



Your responsibilities

  • Develop and maintain backend services and applications using C#/.NET Core (6 or higher).
  • Write, execute, and maintain unit tests to ensure code quality.
  • Work within CI/CD pipelines for efficient and reliable delivery.
  • Implement and maintain solutions with containerization tools (Docker/Kubernetes).
  • Design and optimize SQL database queries and structures.
  • Ensure proper version control with Git.
  • Contribute to building and maintaining REST-based architectures.

Our requirements

  • 5+ years of professional experience as a Backend Developer
  • Strong hands-on experience with C#/ASP.NET Core (6 or higher).
  • Solid knowledge of unit testing.
  • Practical experience with CI/CD processes.
  • Knowledge of containerization (Docker/Kubernetes).
  • Proficiency with SQL databases.
  • Strong experience with Git.
  • Good understanding of REST architecture.
  • Teamwork mindset: no code review – no merge approach.
  • Experience with ORM frameworks.
  • Familiarity with cloud platforms (Azure, Google Cloud).

 

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