Staff Software Engineer owning AI - powered go - to - market systems at Square. Designing scalable sales automation and integrations that improve seller - facing commerce operations.
About the role
- Senior C++ Engineer developing system-level Windows cybersecurity software at Semperis. Analyzing crashes, APIs, authentication protocols, and low-level components.
Responsibilities
- Design and implement high-performance C++ applications
- Maintain code quality and system stability
- Develop and maintain user-mode components injected into sensitive Windows processes
- Intercept system APIs
- Perform advanced crash dump analysis and BSOD investigations
- Develop and maintain components that work with Windows security protocols
- Collaborate with cross-functional teams to diagnose and resolve critical technical issues
Requirements
- Bachelor's degree in Computer Science, Software Engineering, or related field
- 7+ years of professional experience in C++ development with demonstrated senior-level expertise
- Expert-level knowledge of Windows internals and system architecture
- Hands-on production experience with DLL injection and API hooking, such as Microsoft Detours or MinHook
- Advanced proficiency in WinDbg for crash dump analysis
- Strong understanding of x64 architecture
- Extensive experience with WIN32 API
- Ability to analyze and resolve BSOD issues
- Knowledge of Windows Authentication Architecture, including SSPI, Kerberos protocol implementation, LDAP protocol, and directory services
- Extensive experience with RPC and DCOM
- Strong understanding of memory management, thread synchronization, and system resource optimization
- Hands-on professional experience developing production-level C++ applications on Windows, including Windows processes or other low-level/system components
- Legal right to work in the country of application
- Ability to work onsite 2–3 days per week if required for the role
Benefits
- Hybrid work model with up to three days per week onsite and the remaining days remotely
- Employee experience focused on purpose, growth, and balance
- Professional growth opportunities
- Healthy work-life balance
- Global team environment
- Equal opportunity employment
- Reasonable accommodation for applicants with disabilities
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