Fullstack .NET Developer

We are looking for an experienced Senior/ MID Fullstack .NET Developer for one of our clients. You will work on system integration projects and provide support for integration solutions. The project team includes a Technical Lead, Software Architect, QA Manager, and other Software Developers.

Location: 100% Remote (Working hours: 9:00–17:00 CET)

Client: US-based company with a branch in Warsaw

Polish language required

Contract type: B2B

Rate: 150–160 PLN/h + VAT

Responsibilities:

• Collaborating on business and technical requirements
• Maintaining task status in Azure DevOps
• Supporting the Software Architect in technical design
• Assisting in project planning (scope and effort estimation)
• Monitoring and reporting the status of assigned tasks
• Developing code according to established standards and guidelines
• Conducting code reviews
• Writing unit tests
• Debugging and bug fixing

Must-have:

• Proficiency in English and Polish (C1 level)- must have !
• 6+ years of experience as a C#/.NET Developer
• Strong experience with REST APIs
• Solid knowledge of Microsoft Azure stack
• Understanding of Onion Architecture, Domain-Driven Design, and Test-Driven Development
• Ability to read and create technical diagrams
• General IT knowledge (infrastructure, security)
• Experience with integration projects (API development and consumption, SOA, event-driven architecture)
• Knowledge of OAuth 2.0
• Familiarity with Azure Durable Functions
• Experience with JavaScript frameworks (React.js or Angular)
• Understanding of software and system testing principles

Nice to have:

• Experience in AI-related projects or projects in the financial, tax, or banking sector

Interested? Don’t hesitate—apply now and join us!