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Senior Software Engineer - C# / WPF

External
caseguard logoCaseguard · Arlington, VA
Full-timeOn-site1w ago
AgileComputer VisionMachine LearningMentoringRESTScrum
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Responsibilities

  • Lead technical design with product owners and designers, turning ambiguous product goals into architecture, actionable tasks, and timely delivery.
  • Design and build high-quality, high-performance UI and frameworks in a large WPF application.
  • Own cross-cutting concerns: performance, threading, memory, stability, and error handling.
  • Drive incremental refactoring and modernization of existing code without disrupting releases.
  • Mentor junior engineers through code reviews, pair programming, and design feedback, raising the team's engineering standards.
  • Design and build proof-of-concepts for new capabilities and de-risk them before full investment.
  • Qualifications (Required):
  • Bachelor's degree in Computer Science or related field.
  • 5+ years of professional software development experience, including 3+ years developing rich-client .NET desktop applications, with a track record of owning features from design through production.
  • Expert-level C# and .NET (Framework and modern .NET).
  • In-depth WPF and XAML: custom controls, templating, data binding, rendering and virtualization behavior.
  • Deep experience with multi-threading and asynchronous programming in C#, including UI thread marshaling, TPL, async/await, producer-consumer pipelines, and cancellation.
  • Proven experience profiling and optimizing desktop applications (CPU, memory, render performance).
  • Strong command of MVVM plus broader patterns: dependency injection, repository, messaging/event aggregation.
  • Strong understanding of SOLID principles and the ability to create clean, error-tolerant, and testable designs, with the judgment to apply them pragmatically in legacy code.
  • Experience leading projects or mentoring engineers formally.
  • Experience with Agile/Scrum and the full SDLC.
  • Qualifications (It's a plus):
  • Experience with video/audio programming, including FFmpeg or similar technologies, codecs and containers, frame-accurate playback, and hardware acceleration.
  • Experience integrating machine learning/computer vision capabilities (object detection, tracking, OCR, speech-to-text) into production applications.
  • Experience with native interoperability, including P/Invoke, C/C++ libraries, and managed/unmanaged memory management.
  • Experience with distributed/client-server features, including SignalR or WebSockets, REST APIs, and inter-process communication.

Benefits

Competitive SalaryStock OptionMedical, Dental, and Vision Insurance401KPaid VacationTen paid holidays per yearFriendly and Learning environmentAbout CaseGuardDental insuranceVision insurance401(k)Paid time offEquity / stock options

Additional Information

CaseGuard is looking for a senior engineer to help drive the evolution of CaseGuard Studio, a feature-rich .NET desktop application for video, audio, image, and document redaction. You'll own significant areas of a large WPF codebase that spans real-time video playback, AI-powered detection, and media processing pipelines - and help shape how the team builds software.

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