Senior C++ Engineer

At Semperis, our mission is to be a Force for Good. Starting with being a great place to work. We believe that when people feel valued, supported, and empowered, they do their best work. That’s why we focus on creating an employee experience rooted in purpose, growth, and balance. Semperis has been recognized as one of America’s Fastest-Growing Cybersecurity Companies by the Inc. 5000, a DUNS 100 Top Startup to Work For, and a multi-year Inc. Best Workplace awardee.

We are seeking an experienced Senior C Software Engineer with strong

system-level programming expertise and advanced troubleshooting capabilities.

The ideal candidate will have a deep knowledge of Windows internals and be

passionate about solving complex technical challenges.

Key Responsibilities

• Design and implement high-performance C applications while maintaining code quality and system stability
• Develop and maintain user-mode components that are injected into sensitive Windows processes and 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
  
  

Required Qualifications

• 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 experience with DLL injection and API hooking (e.g., Microsoft Detours, MinHook) in production code
• Advanced proficiency in WinDbg for crash dump analysis,
  
  

Including

• Strong understanding of x64 architecture
• Extensive experience with WIN32 API
• Ability to analyze and resolve BSOD issues

• knowledge of Windows Authentication Architecture:
• SSPI
• Kerberos protocol implementation
• LDAP protocol and directory services
• Extensive experience with: RPC, DCOM
• Strong understanding of memory management, thread synchronization, and system resource optimization
  
  

Why Join Semperis?

You’ll be part of a global team on the front lines of cybersecurity innovation. At Semperis, we celebrate curiosity, integrity, and people who take initiative. If you’re someone who sees the glass as half full, embraces challenges as growth opportunities, and values a healthy balance between work and life—we’d love to meet you.

• Semperis maintains office locations in several cities across the globe. Where the job description specifies a required location, candidates will follow our hybrid work model. This includes working up to three days per week and remotely the remaining days.
  
  

Semperis is an equal opportunity employer and will not discriminate against an applicant or employee based on race, color, religion, creed, national origin or ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, veteran or military status, genetic information, citizenship, marital status, or any other legally recognized protected basis under federal, state, or local law. The information collected by the Semperis application is solely to determine suitability for employment, verify identity, and maintain employment statistics.

Applicants with disabilities may be entitled to reasonable accommodation under the Americans with Disabilities Act and/or other applicable state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on Semperis. Please inform Semperis representative Anna Taylor, Director of Global Recruiting, if you need assistance completing this application or to otherwise participate in the application process.