Senior Software Engineer

. Develop and enhance runtime security features for a Windows-based endpoint agent .

Posted 9/25/2026full-timeRemote • California • United StatesSenior💰 $167,700 - $245,200 per yearWebsite

Tools & technologies

Cyber SecurityLinuxC++Go

Key responsibilities & impact

Develop and enhance runtime security features for a Windows-based endpoint agent
Design and implement systems-level endpoint security and monitoring capabilities using Go, C, and C++
Participate in architecture, design, and implementation discussions with senior engineers and architects
Develop software using Windows system programming interfaces, including Win32 APIs, File I/O, and Winsock
Investigate Windows platform behavior, APIs, and interactions between user-mode and kernel-mode components
Develop multi-threaded and multi-process applications and system-level software
Debug and resolve complex implementation issues and perform code reviews
Analyze and optimize feature performance for efficient endpoint operation
Collaborate with cross-functional teams to translate runtime security requirements into reliable software solutions
Contribute to cross-platform security capabilities spanning Windows and Linux environments

What you’ll need

Bachelor's degree with 5+ years of software development experience, or a Master's degree with 4+ years of software development experience
Experience with systems programming using C or C++, including multi-threaded and multi-process application development
2+ years of experience with operating system fundamentals, including threads, processes, file systems, networking, and inter-process communication
Experience with Windows system programming, including Win32 APIs, File I/O, Winsock, and familiarity with API hooking concepts
Experience debugging and troubleshooting complex software systems
Preferred: Understanding of Windows kernel concepts and user-mode/kernel-mode interactions
Preferred: Experience developing endpoint security, cybersecurity, or system-monitoring software
Preferred: Experience with Windows kernel programming, driver development, or low-level Windows internals
Preferred: Familiarity with malware detection techniques, endpoint protection technologies, or security monitoring concepts
Preferred: Experience with network programming and security-related protocols
Preferred: Experience implementing complex systems-level software features in production environments
Preferred: Experience analyzing and optimizing performance for systems-level or endpoint software
Preferred: Experience collaborating with senior engineers and architects on software architecture and technical design decisions

Comp & perks

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, subject to eligibility
10 paid holidays per full calendar year
1 floating holiday for non-exempt employees
1 paid day off for employee’s birthday
Paid year-end holiday shutdown
4 paid days off for personal wellness
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 off provided on hire date and each January 1st thereafter
Up to 80 hours of unused sick time carried forward annually
Additional paid time away for critical or emergency family issues
Optional 10 paid volunteer days per full calendar year
Annual bonuses for non-sales roles, subject to Cisco policies