Full-Time Senior C# Developer

Revalize is hiring a remote Full-Time Senior C# Developer. The career level for this job opening is Senior Manager and is accepting Poznań, Poland based applicants remotely. Read complete job description before applying.

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Revalize

Job Title

Senior C# Developer

Posted

Career Level

Full-Time

Career Level

Senior Manager

Locations Accepted

Poznań, Poland

Job Details

We are seeking an experienced and motivated Senior C# Developer to join our dynamic team focused on developing robust, scalable APIs and maintaining high-performance web applications. The ideal candidate will have extensive experience with C#, .NET technologies, and a strong background in API development. You will collaborate with cross-functional teams, uphold high coding standards, and contribute to the evolution of our web-based solutions.
  • Design, develop, and maintain high-performance RESTful APIs using C# and .NET technologies.
  • Develop and maintain commercial web applications utilizing Microsoft technologies such as C#, ASP.NET (Core) MVC, and Visual Studio.
  • Contribute to architectural decisions and help define best practices for API performance, scalability, and security.
  • Write secure, clean, efficient, and well-documented code.
  • Collaborate within cross-functional agile teams.
  • Participate in code reviews.
  • Troubleshoot and resolve complex technical issues across API and web application layers.
  • Use project management and source control tools such as Jira, GitHub, and Confluence.
  • Advocate for and implement process improvements, including CI/CD, automated testing, and agile methodologies.
  • Mentor junior developers and contribute to team knowledge sharing
What you will bring:
  • 5+ years of professional experience in software development with a focus on C# and .NET technologies.
  • 3+ years of experience designing and developing RESTful APIs.
  • Proficiency in ASP.NET Core (MVC and Web API).
  • Solid knowledge of database design and SQL.
  • General knowledge of HTML, CSS, JavaScript, and Razor Pages.
  • Experience developing software within a team environment using source code management tools such as Git or SVN.
  • Strong understanding of API and web application security best practices, performance optimization, and troubleshooting.
  • Good communication and collaboration skills.
  • Self-motivation and ability to work independently as well as part of a team.
What will be an asset:
  • Experience with Azure Cloud Services and CI/CD pipelines.
  • Advanced SQL skills.
  • Experience developing and consuming REST or SOAP-based web services.
  • Familiarity with front-end performance optimization and responsive design principles within ASP.NET Core.
  • Experience with DevExpress or Telerik components for enhanced front-end functionality.
  • Experience working in Agile/Scrum environments.
  • Experience with automated testing frameworks and performance monitoring tools.
  • Microsoft certifications for Azure, C#, or ASP.NET Web Applications.
  • Experience with GitHub Copilot.

FAQs

What is the last date for applying to the job?

The deadline to apply for Full-Time Senior C# Developer at Revalize is 26th of September 2025 . We consider jobs older than one month to have expired.

Which countries are accepted for this remote job?

This job accepts [ Poznań, Poland ] applicants. .

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