Senior Software Engineer – Windows, Duo

This is a fully remote position, open to applicants in Michigan, +1 more state.

📋 Description

• Create and deploy high-performance, memory-efficient authentication components and enterprise integrations utilizing Modern C++ and native Win32 APIs.

• Direct the technical design and enhancement of bespoke Windows Credential Providers, ADFS MFA adapters, and WTS multi-session services.

• Reduce authentication latency and thwart credential bypass attacks.

• Build automated diagnostic tools and administrative utilities with PowerShell and WMI/CIM.

• Optimize enterprise-scale deployment and enhance sysadmin manageability.

• Collaborate with Product Management, Security Architecture, and Design teams to produce Architectural Decision Records.

• Implement thorough automated testing pipelines to ensure zero-regression releases.

• Guide fellow engineers through code reviews and provide technical mentorship.

⛳️ Requirements

• Bachelor’s degree in computer science, computer engineering, or a related technical field (or equivalent practical experience).

• Over 6 years of professional experience in systems software engineering using Modern C++ (C++14/17/20) or C.

• Proficient in developing native Windows desktop or server applications using Win32 APIs, multi-threading synchronization primitives, and IPC.

• Experienced in administering or integrating with on-premises Active Directory (AD DS), Kerberos authentication protocols, or Windows Server environments.

• Skilled in writing PowerShell scripts or using WMI/CIM for Windows system automation, configuration, and troubleshooting.

• Preferred: experience in developing custom Windows Credential Providers, LSA authentication packages, or ADFS MFA adapters.

• Preferred: experience in debugging user-mode crashes, race conditions, and deadlocks utilizing WinDbg, ETW tracing, or Visual Studio diagnostic tools.

• Preferred: experience in authoring enterprise MSI installer customizations, Group Policy Administrative Templates (.admx/.adml), or GPO deployment workflows.

• Preferred: knowledge of modern authentication protocols, FIDO2/WebAuthn, passwordless logon architectures, or Microsoft Entra ID hybrid join.

• Preferred: technical leadership experience in authoring ADRs, conducting structured code reviews, and mentoring junior engineers.

🏝️ Benefits

• Medical, dental, and vision insurance.

• 401(k) plan with a Cisco matching contribution.

• Paid parental leave.

• Short- and long-term disability coverage.

• Basic life insurance.

• Cisco restricted stock unit grants may be available.

• 10 paid holidays per full calendar year.

• 1 floating holiday for non-exempt employees.

• Paid birthday day off.

• Paid year-end holiday shutdown.

• 4 paid personal wellness days.

• 16 days of paid vacation per full calendar year for non-exempt employees.

• Flexible vacation time off program with no defined limit for eligible exempt employees.

• 80 hours of sick time provided on hire date and each January 1st thereafter.

• Up to 80 hours of unused sick time carried forward.

• Additional paid time away for critical or emergency family issues.

• Optional 10 paid volunteer days per full calendar year.

• Annual bonuses may be available for non-sales roles.

• Opportunities for professional growth and development.