Cyber Systems Engineer - Onsite RMF & Security+ Expert

Cornerstone Defense LLC; Sunnyvale (CA); On-site; USD 90,000 - 165,000; Full time

Benefits offered by this job

401(k) match

Tuition assistance

Paid time off

Health benefits

Fitness reimbursement

Job summary

Cornerstone Defense LLC in Sunnyvale, CA is seeking a Cyber Systems Engineer to support the COOLR program’s AEHF system components. The role requires active security clearance and a bachelor’s degree, with seven years of relevant experience.

You will implement and maintain IT and cyber-security across production and test environments, ensure RMF compliance, and provide on-site support on a 9x80A schedule. The position offers a competitive salary in the $90,000–$165,000 range and a comprehensive

Qualifications

• Bachelor's degree required.
• Minimum seven years of relevant experience.
• Active Security+ certification or equivalent.
• Experience with Linux/UNIX, Windows, and embedded hardware.
• Storage management with NAS/SAN systems.
• Knowledge of STIGs and RMF-based compliance.

Responsibilities

• Deliver IT and cyber-systems security support for AEHF components.
• Maintain digital ecosystem across production and testing environments.
• Follow a 9x80A schedule.
• 100% on-site work.
• Deploy, configure, harden, and support disaster-recovery (NetBackup/Veeam).
• Install, secure, and monitor NAS/SAN solutions (NetApp or equivalent).
• Apply STIGs, manage patches/upgrades per RMF compliance.
• Execute changes using change-management tools and maintain asset inventories.
• Provide on-site operational support during day hours; after-hours when needed.
• Lead technical discussions and mentor peers across teams.

Skills

System administration

Cybersecurity

Network administration

Scripting

Education

Bachelor's degree

Tools

NetBackup/Veeam

NetApp NAS/SAN

RMF compliance

Job description

Cornerstone Defense LLC in Sunnyvale, CA is seeking a Cyber Systems Engineer to support the COOLR program’s AEHF system components. The role requires active security clearance and a bachelor’s degree, with seven years of relevant experience.

You will implement and maintain IT and cyber-security across production and test environments, ensure RMF compliance, and provide on-site support on a 9x80A schedule. The position offers a competitive salary in the $90,000–$165,000 range and a comprehensive