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November 3, 2026

.NET Backend Developer

Mid • On-site

900 - 1,100 PLN/yr

Warsaw, Maz, Poland

Quick Facts

  • Role: .NET Developer (Backend)
  • Focus: Backend engineering with microservices and APIs

Description

Build and evolve backend applications using .NET (C#), including microservices and APIs integrated with external systems. You’ll work with databases, cloud deployments, and containerized environments, and ensure high code quality through testing and CI/CD collaboration. You’ll also diagnose and resolve production issues while supporting monitoring and application maintenance.

Responsibilities

  • Design, implement, and develop backend applications in .NET (C#)
  • Create and maintain microservices and APIs (REST, gRPC) and integrate them with external systems
  • Work with databases, optimize queries, and perform schema migrations
  • Implement cloud solutions using containerization (Docker, Kubernetes)
  • Ensure code quality via regular code reviews, writing unit and integration tests, and contributing to CI/CD automation
  • Diagnose and fix production problems and participate in monitoring and application maintenance

Requirements

  • Minimum 3 years of experience in .NET (C#) software development
  • Good knowledge of microservices architecture and design patterns used in web applications
  • Ability to work effectively with Docker and Kubernetes
  • Practical knowledge of cloud solutions
  • English proficiency at least B2
  • Knowledge of API creation/management and tools for testing services (e.g., Postman)
  • Ability to write unit and integration tests
  • Nice to have: openness to working with Angular or React
  • Nice to have: experience in banking projects

Benefits

  • Hybrid work model (3 days per week onsite with the client in Warsaw)
  • Participation in interesting projects for global clients
  • Internal promotions for up to 80% of cases
  • 90% of management has a technical education
  • Access to internal training and development paths
  • Team events, company meetings, and Town Halls
  • Life insurance and private medical care for you and your family
  • MultiSport card to support health and fitness

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