Software Developer – C#/.NET Desktop Application

About the role

VSolvit is seeking a Software Developer to support the development, modernization, and sustainment of mission-critical analysis applications for the U.S. Navy. The selected candidate will work in an Agile SAFe environment to design, develop, test, and maintain desktop applications using C#, .NET, WPF, and XAML. This role is suited for mid- to senior-level developers with strong desktop application experience and an interest in modernizing legacy systems.

Responsibilities

• Develop, test, and maintain desktop applications using C#, .NET, WPF, and XAML.
• Support modernization of legacy applications, including Delphi-based systems.
• Apply object-oriented design, multi-threading, concurrency, and asynchronous programming.
• Use Test Driven Development practices and create automated tests.
• Troubleshoot software defects and performance issues.
• Participate in code reviews, design discussions, sprint planning, and Agile ceremonies.
• Support CI/CD pipelines and technical documentation.
• Collaborate with engineers, testers, and government stakeholders.

Required Skills and Qualifications

• 3–10+ years of professional software development experience.
• Strong proficiency in C# and .NET desktop development.
• Hands-on experience developing applications with WPF and XAML.
• Strong knowledge of object-oriented programming and design patterns.
• Experience with multi-threading, concurrency, and TPL.
• Familiarity with Test Driven Development.
• Experience with NUnit, xUnit, MSTest, or similar testing frameworks.
• Familiarity with Moq or similar mocking frameworks.
• Experience troubleshooting complex software systems.
• Working knowledge of Git.
• Strong communication and teamwork skills.
• U.S. citizenship required.
• Ability to obtain and maintain a U.S. Government Security Clearance.
• If applicable, former or current U.S. Government employees must provide a post-employment ethics letter if offered employment.

Preferred Skills and Qualifications

• Advanced WPF and XAML experience, including MVVM.
• Experience with Telerik UI controls.
• Experience creating or maintaining YAML-based CI/CD pipelines.
• Experience with Azure DevOps, GitHub Actions, Jenkins, or similar tools.
• Experience with Agile Scrum or SAFe.
• Experience with Jira and Confluence.
• Experience in government, defense, or regulated environments.
• Experience modernizing legacy applications.
• Familiarity with Delphi.
• Active Secret or Top Secret clearance.
• CompTIA Security+ certification.

Education and Certifications

• Bachelor’s degree in Computer Science, Software Engineering, Computer Engineering, or a related field, or equivalent experience.
• Ability to obtain required DoD Cyber Workforce certifications.