Senior .NET Developer

Are you a Senior .NET Developer who values clean code, cloud mastery, and AI-powered productivity? We are growing fast and seeking a highly motivated, disciplined, and experienced developer to join our remote team. If you take ownership, enjoy modern architecture, and want to shape backend systems using the latest tools, we want to hear from you!

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18 000 - 22 000 PLN net + VAT

B2B

Remote

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What will you do?

Design & Architect: Build and maintain scalable backend services using C#, .NET Framework, .NET Core, and ASP.NET Web API.
Cloud Operations: Work extensively within Microsoft Azure (App Services, Service Bus, Cosmos DB, etc.) and Azure DevOps.
Data & API: Develop robust REST/HTTP APIs and manage complex data models with Entity Framework and SQL Server.
Quality Assurance: Write unit and integration tests to ensure system reliability and high code quality.
AI Integration: Use AI-assisted tools (GitHub Copilot, ChatGPT, OpenAI API, Claude Code, Cursor) to accelerate development and stay ahead of the curve.
Collaboration: Participate in code reviews and architecture discussions to help shape our engineering standards.

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What do we expect from you?

Languages: English at a level enabling smooth written and verbal communication (min. B2) and Polish (mandatory).
Mindset: Solid understanding of clean code principles, software craftsmanship, and a strong sense of ownership and self-discipline in a remote environment.
Experience: Minimum 5 years of commercial experience with:
- C#, .NET Framework, .NET Core, ASP.NET Web API.
- JSON, REST/HTTP.
- Entity Framework and SQL Server.
- Microsoft Azure (DevOps, App Services, Azure SQL, Service Bus, Storage, Cosmos DB, App Insights).
- Unit testing and Integration testing.
- Microservices and related architectural patterns (preferably Microsoft reference architecture).
- AI-assisted developer tools (e.g., GitHub Copilot, ChatGPT, OpenAI API, Claude Code, Cursor or similar).

Nice-to-have skills

Experience with React (preferred) or other modern frontend frameworks.
Familiarity with TypeScript, JavaScript, HTML, and CSS.
Knowledge of Docker, Domain-Driven Design (DDD), and CQRS.
Interest in AI/ML integrations and automating developer productivity.

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What can you expect in return?

Salary: 18 000 – 22 000 PLN net + VAT (B2B contract).
Time off: 26 fully paid days off per year.
Health & Sport: Private health care (Lux Med) and co-financing for MultiSport card.

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Additional benefits

Growth: Work in a highly experienced team with a real impact on technology choices.
Culture: Remote-first approach, regular integration events, and we even celebrate your birthday!

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