Cyber Systems Engineer

Sunnyvale, CA

Active Secret or Top Secret

Salary Range: $90,000 – $165,000

Certification Requirements:
Current Security+ (CompTIA)

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems.

If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

The engineer will deliver IT and cyber‑systems security support for the COOLR program’s AEHF System Database (ASDB), Flight Software (FSW), and Network AEHF System Testbed‑Tools (NAST‑T).

• Responsible for maintaining the digital ecosystem across production and testing environments, ensuring all systems remain efficient, secure, and reliable.
• Follow a 9x80A schedule.
• 100% on-site.
• Requires a bachelor’s degree and a minimum of seven years of relevant experience.
• Active Security+ certification
• System Administration (Linux/UNIX, Windows, embedded hardware)– deploy, configure, harden, troubleshoot, and support disaster‑recovery (Net Backup/Veeam).
• Storage Management– install, secure, and monitor Net App or other NAS/SAN solutions.
• Cyber‑Compliance– apply STIGs, manage patches/upgrades, perform trusted downloads, and maintain RMF‑based compliance.
• Change & Asset Management– execute changes using change‑management tools and keep asset inventories up to date.
• Operational Support– work onsite during day‑shift business hours; provide after‑hours support when critical operations demand it.
• Collaboration & Knowledge Sharing– lead technical best‑practice discussions, mentor peers, and coordinate with functional teams to resolve issues.

Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs.

These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to:

A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.