Use advanced C++ and Windows internals expertise at Semperis to solve complex system-level challenges in a cybersecurity engineering workplace.
Semperis seeks an experienced Senior C++ Software Engineer with strong system-level programming and troubleshooting capabilities. You will design high-performance applications, maintain user-mode components, and work with Windows security protocols. The position requires expertise in Windows architecture, crash analysis, and production API interception.
Key Responsibilities: Design high-performance C++ applications with stable system behavior
Maintain injected user-mode Windows process components
Intercept system APIs within sensitive Windows processes
Investigate crash dumps and resolve BSOD issues




Diagnose critical issues with cross-functional teams
Requirements: Bachelor's degree in computer science or related field
Seven-plus years of professional C++ development experience
Expert knowledge of Windows internals and system architecture
Production experience with DLL injection and API hooking
Advanced WinDbg, x64, and WIN32 API proficiency
Bring senior-level C++, Windows internals, API hooking, and troubleshooting expertise to Semperis cybersecurity engineering work.

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📌 Senior C++ Windows Systems Engineer (Ontario)
🏢 Semperis
📍 Ontario