Senior 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

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

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