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October 12, 2026

Senior .NET Developer

Senior • Remote

166,400 - 208,000 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Senior .NET Developer
  • Contract: B2B
  • Work mode: Remote
  • Rate: Up to 100 PLN/h net + VAT

Description

You will design and build applications and databases, estimate effort and identify delivery risk, and plan/create/run tests. The role focuses on high code quality via code reviews and close collaboration with analysts, architects, UX designers, and testers within a Scrum process. The main technologies include C#, .NET Core, EF Core, Dapper, and distributed/event-driven architectures, with Angular 2+ knowledge as an added advantage.

Responsibilities

  • Design and create applications and databases
  • Estimate workload and indicate risks or problems during implementation
  • Plan, create, and execute tests for applications and solutions
  • Maintain source code quality, including Code Review
  • Provide technical and substantive support to other team members
  • Work closely with business analysts, architects, UX designers, and testers
  • Create technical documentation
  • Deliver tasks according to applicable rules and the adopted SCRUM methodology

Requirements

  • Minimum 5 years of C# programming experience
  • Very good knowledge of .NET Core and Visual Studio
  • Very good knowledge of EF Core and Dapper
  • Good knowledge of relational databases and PL/SQL (Oracle)
  • Practical GIT knowledge (Gitflow)
  • Very good practical knowledge of SOLID, CQRS, and DDD
  • Practical knowledge of distributed architectures (microservices, modular monolith)
  • Practical knowledge of event-driven systems (Marten is a plus)
  • Practical knowledge of techniques for distributed transactions
  • Practical knowledge of message brokers (IBM MQ)
  • Ability to design a failure-resilient integration with external systems
  • Polish language proficiency enabling smooth verbal and written communication

Benefits

  • Up to 100 PLN/h net on B2B + VAT
  • Remote collaboration
  • Private medical care option
  • Sports card

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