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 stabilityDevelop 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 field7+ years of professional experience in C++ development with demonstrated senior-level expertise
Expert-level knowledge of Windows internals and system
architectureHands-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
#LI-HA1
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.Skills Required
- Bachelor's degree in Computer Science, Software Engineering, or a related field
- 7+ years of professional C++ development experience with senior-level expertise
- Expert knowledge of Windows internals and system architecture
- Production experience with DLL injection and API hooking, such as Microsoft Detours or MinHook
- Advanced proficiency with WinDbg for crash dump analysis
- Strong understanding of x64 architecture
- Extensive experience with the Win32 API
- Ability to analyze and resolve BSOD issues
- Knowledge of Windows Authentication Architecture, including SSPI and Kerberos
- Knowledge of LDAP protocol and directory services
- Extensive experience with RPC and DCOM
- Strong understanding of memory management, thread synchronization, and system resource optimization
Semperis Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Semperis and has not been reviewed or approved by Semperis.
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Healthcare Strength — Healthcare coverage is portrayed as strong, with medical, dental, and vision benefits highlighted alongside comments about robust care.
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Retirement Support — A very generous 401(k) match is repeatedly called out as a notable strength of the package.
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Leave & Time Off Breadth — Unlimited PTO is cited as part of a solid benefits package that supports time away from work.
Semperis Insights
What We Do
For security teams charged with defending hybrid and multi-cloud environments, Semperis ensures the integrity and availability of critical enterprise directory services at every step in the cyber kill chain and cuts recovery time by 90%. Purpose-built for securing hybrid Active Directory environments, Semperis' patented technology protects over 50 million identities from cyberattacks, data breaches, and operational errors. The world's leading organizations trust Semperis to spot directory vulnerabilities, intercept cyberattacks in progress, and quickly recover from ransomware and other data integrity emergencies. Semperis is headquartered in Hoboken, New Jersey, and operates internationally, with its research and development team distributed throughout the United States, Canada, and Israel. Semperis hosts the award-winning Hybrid Identity Protection conference and podcast series (www.hipconf.com) and built the free Active Directory security assessment tool, Purple Knight (www.purple-knight.com). The company has received the highest level of industry accolades, recently named to Deloitte's Technology Fast 500™ list for the second consecutive year (2020-2021), and ranked among the top three fastest-growing cybersecurity companies in the 2021 Inc. 5000 list. Semperis is a Microsoft Enterprise Cloud Alliance and Co-Sell partner.
