Windows GUI Software Contractor

Location: Hybrid/Onsite 3 days min – Burlington, MA

Duration: 6 month Contract

Client is seeking a hands-on Software Engineer to join their team as an onsite contractor to support a critical Win Tablet application used in a hardware-integrated medical device. This role is highly execution-focused and ideal for someone who can jump in quickly, take ownership, and help stabilize and enhance a complex C# Windows application under active development.

Key Responsibilities

• Develop, enhance, and maintain a C# Windows desktop application (currently WinForms)
• Implement and refine user interface components, including graphing, waveform display, and high-performance visual updates
• Diagnose and resolve performance issues in a multithreaded C# application (e.g., UI responsiveness, data jitter, throughput bottlenecks)
• Work with real hardware (tablets/controllers), not just simulated environments; debug software/hardware integration issues
• Collaborate closely with cross-functional engineers in a team environment
• Follow all established development, design, and documentation procedures
• Write and maintain unit tests; help evaluate and improve testing strategies
• Support near-term product milestones with a focus on reliability, compatibility, and performance
  
  

Required Qualifications

• Strong professional experience with C# in Windows-based applications
• Experience with WinForms and/or WPF (or similar Windows UI frameworks); comfort working in Visual Studio designer tools
• Solid understanding of multithreaded C# applications
• Proven ability to diagnose and fix performance issues (profiling, identifying hotspots, bottlenecks, and practical limits of Windows applications)
• Familiarity with .NET 10 or newer .NET runtimes
• Familiarity with NuGet packages and dependency management in Visual Studio
• Experience with GitHub Actions and CI/CD workflows
• Comfortable working onsite with hardware-integrated systems (tablets, controllers, embedded-adjacent environments)
• Ability to take initiative while also asking questions when requirements are unclear
• Strong communication skills and good documentation habits
• Willing and able to work onsite in Burlington, MA due to equipment and hardware needs
• Acts as a strong team player who takes ownership and follows through
• Available to start quickly and ramp up fast Nice-to-Have Skills
• Working knowledge of C /C
• Experience working on medical device or other regulated environment
• Experience with modern Windows UI toolkits beyond traditional WinForms
• Background in web or cloud technologies (useful longer-term, not required initially)
• Experience working on systems involving waveform data, high-rate sampling, or real-time-ish data flows
  
  

Pay Range: $50-$65/hr

ATG456