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December 17, 2025

Senior .Net Developer

Senior • Remote

$115 - $125/

Warsaw, Poland

We are looking for an experienced Senior Software Engineer to join our team and contribute to the design and development of scalable, secure, and high-performing SaaS platforms and web applications. This role requires strong expertise in Microsoft technologies and cloud-based solutions, along with a passion for building enterprise-grade software.


Key Responsibilities

  • Design, develop, and maintain large-scale web applications and SaaS platforms.

  • Implement and maintain RESTful APIs and web services.

  • Collaborate closely with cross-functional teams in an Agile environment.

  • Write and maintain unit tests (NUnit, Moq, Jest) to ensure code quality.

  • Participate in code reviews, architecture discussions, and technical planning.

  • Work with Git and Azure DevOps for version control and project tracking.


Required Qualifications

  • 6+ years of professional experience in software development.

  • Proven track record in building and maintaining large-scale web applications and SaaS solutions.

  • Strong proficiency in C#, .NET Core, and .NET Framework.

  • Solid understanding of RESTful architecture and WebAPI development.

  • Hands-on experience with unit testing frameworks (NUnit, Moq, Jest).

  • Proficiency with Git and distributed version control.


Preferred Skills

  • Experience in a SAFe Agile environment.

  • Familiarity with CI/CD pipelines and DevOps practices.

  • Strong problem-solving and communication skills.

  • Ability to mentor and support junior developers.