Senior C# / WPF Developer

C# / WPF Developer Location: Brossard, Quebec Work Model: Hybrid – 3 days per week on site Hours: 40 hours per week Position Type: Permanent or Freelance About the Opportunity We are looking for an experienced C# / WPF Developer to join a software development team working on a Windows desktop application used to configure fire detection and alarm panels. The successful candidate will contribute to the development and evolution of a reliable, high-performance application designed for installers, technicians, and end users. This role offers the opportunity to work on a technically challenging product where software quality, usability, stability, and reliability are critical. The ideal candidate has strong hands-on expertise in C#/.NET and WPF, combined with solid software engineering fundamentals and experience developing Windows desktop applications. Main Responsibilities Design, develop, and maintain robust features for a Windows desktop application using C#/.NET, WPF, and XAML, ensuring high performance, reliability, and maintainability.Contribute to application architecture and technical design, applying object-oriented principles, design patterns, MVVM, dependency injection, and other software engineering best practices.Develop intuitive user interfaces and reliable configuration components for fire detection and alarm systems, taking into account user requirements and the constraints of safety-critical products.Analyze requirements, estimate development efforts, troubleshoot complex technical issues, and resolve performance, stability, compatibility, and deployment challenges.Develop and maintain unit and integration tests, participate in code reviews, contribute to CI/CD and software delivery processes, and continuously improve overall product quality.Collaborate within a cross-functional Agile team alongside Product, QA, Systems, Hardware, and Support teams, while documenting technical decisions and sharing knowledge with other developers. Qualifications Bachelor’s degree or equivalent in Software Engineering, Computer Science, Computer Engineering, or a related field, with a minimum of 7 years of professional software development experience, including significant Windows desktop development.Strong expertise in C# and .NET, with hands-on experience across .NET Framework and/or modern .NET versions; extensive WPF and XAML experience is essential.Solid understanding of object-oriented programming, software design patterns, MVVM architecture, and dependency injection, with the ability to design clean, maintainable, and testable software.Experience with relational databases and SQL, including Entity Framework, LINQ, or equivalent data-access technologies, as well as unit and integration testing practices.Strong experience with Git, Agile methodologies (Scrum/Kanban), CI/CD, code reviews, and software quality practices; knowledge of C++ is considered a strong asset.Strong analytical, troubleshooting, communication, and collaboration skills, with experience in industrial, hardware-integrated, embedded, automation, IoT, real-time, high-availability, or safety-critical environments considered an asset. Why Join This Opportunity? You will have the opportunity to work on a mission-critical Windows desktop product where software reliability and user experience directly support fire safety systems. This is an excellent opportunity for a senior developer who wants to apply strong C#/.NET and WPF expertise to a technically challenging product within a collaborative, multidisciplinary environment. Key technical priorities: C# / .NET and WPF.