Senior Software Engineer — C# / WPF

Posted 3 Days Ago
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Arlington, VA, USA
In-Office
Senior level
Artificial Intelligence • Software
The Role
Lead the design and development of a high-performance C#/.NET WPF desktop application for media redaction. Own architecture, UI frameworks, performance, threading, memory, stability, refactoring, and proof-of-concept development. Collaborate with product and design teams, mentor engineers, and guide features from design through production. Work may include video/audio processing, AI and computer vision integration, native interoperability, and distributed client-server capabilities.
Summary Generated by Built In

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.

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 Salary
  • Stock Option
  • Medical, Dental, and Vision Insurance
  • 401K
  • Paid Vacation
  • Ten paid holidays per year
  • Friendly and Learning environment
About CaseGuard

CaseGuard is a software company that helps law enforcement agencies, federal agencies, hospitals, schools, airports, and others manage all their media redaction needs in one easy-to-use redaction software. CaseGuard Studio is one of a kind. Our team is driven by a passion for great software design, creating great products, and creative processes; CaseGuard implements innovative ideas across multiple services and agencies. We invest in people. We nurture skills consistent with our values and our future strategy. Our passionate pursuit of excellence, the application of our creativity to solve our clients’ challenges, our technical expertise, and our collaborative spirit are measures of our success.

Skills Required

  • Bachelor's degree in Computer Science or a related field
  • 5+ years of professional software development experience
  • 3+ years developing rich-client .NET desktop applications
  • Experience owning features from design through production
  • Expert-level C# and .NET Framework and modern .NET
  • In-depth WPF and XAML experience, including custom controls, templating, data binding, rendering, and virtualization
  • Deep experience with multithreading and asynchronous C# programming, including UI thread marshaling, TPL, async/await, producer-consumer pipelines, and cancellation
  • Experience profiling and optimizing desktop applications for CPU, memory, and rendering performance
  • Strong command of MVVM, dependency injection, repository, and messaging or event aggregation patterns
  • Strong understanding of SOLID principles and clean, error-tolerant, testable design
  • Experience leading projects or formally mentoring engineers
  • Experience with Agile/Scrum and the full software development lifecycle
  • Experience with video/audio programming, FFmpeg or similar technologies, codecs and containers, frame-accurate playback, and hardware acceleration
  • Experience integrating machine learning or computer vision capabilities into production applications
  • Experience with native interoperability, including P/Invoke, C/C++ libraries, and managed/unmanaged memory management
  • Experience with distributed or client-server features, SignalR or WebSockets, REST APIs, and inter-process communication
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The Company
HQ: Arlington, VA
38 Employees

What We Do

CaseGuard is an AI Redaction Solution. Everything you need to redact and enhance any video, audio, image, or document in one redaction solution. Very flexible, affordable, easy to use, secure, fast, multilingual, and ready to integrate with other systems. CaseGuard helps law enforcement agencies, federal agencies, hospitals, schools, shopping centers, airports and private companies manage all their media redaction needs in one easy to use redaction software

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