District Partners is engaged on this exclusive search for a Senior Software Engineer to take full ownership of a core component within a next-gen desktop application suite. We’re supporting a revolutionary client in the national defense space that’s building mission-critical software in a fast-moving, classified environment. This is a high-impact, individual contributor role—not a leadership seat today, but a clear path to one. You’ll work hands-on, operate independently, and build tech that directly supports national security.

What You'll Do:

• Build and maintain desktop applications using C#, WPF, XAML, and WinForms
• Own a distinct slice of a broader, integrated platform
• Collaborate with cross-functional engineers to meet mission objectives
• Work directly with end users to iterate and deliver impactful updates
• Troubleshoot, debug, and optimize performance in real-world deployments
• Deliver consistently strong results and help shape a foundation for future leadership

What We're Looking For:

• 8+ years of software development experience
• Deep expertise in desktop development with C#, WPF, XAML, and WinForms
• Ability to work independently and navigate complex systems
• Strong problem-solving mindset and ownership mentality
• Active Top Secret clearance (SCI preferred)
• U.S. Citizenship (required)
• Willingness to work onsite in Reston, VA

This role is built for a senior engineer who still loves to code, wants to own their work, and is motivated by meaningful, mission-driven challenges.

Location:

Reston, VA (Onsite)

Clearance:

Active Top Secret required (SCI preferred)

Total Compensation:

$168K–$250K + flexibility based on skills and location

Relocation assistance available:

For the right candidate, the client is offering financial support for relocation after onboarding. If you're ready to move for the mission, they’re ready to make it worthwhile.