Cyber Systems Engineer — On-Site, 9x80A, Security+.

Cornerstone Defense LLC; United States; On-site; USD 90,000 - 165,000; Full time

Benefits offered by this job

401(K) plan with company match

Tuition and training assistance

Paid vacation/leave

Fitness reimbursement program

College savings plan

Commuter benefits

Financial advisory services

Job summary

Cornerstone Defense is seeking a Cyber Systems Engineer in Sunnyvale, CA. This on-site role requires Active Secret or Top Secret clearance and an active Security+ certification.

Salary ranges from $90,000 to $165,000, with a 9x80A work schedule and opportunities to support critical defense systems. Responsibilities include IT and cyber-systems security support for AEHF-related systems, maintaining secure and reliable environments, and collaborating with diverse teams to implement RMF-based

Qualifications

• Bachelor’s degree required.
• Minimum of seven years of relevant experience.
• Active Security+ certification (CompTIA).
• On-site role in Sunnyvale, CA with a 9x80A schedule.

Responsibilities

• 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).
• Maintain digital ecosystem across production and testing environments ensuring efficiency, security, and reliability.
• Collaborate with teams to resolve issues and share best practices.

Skills

Linux/UNIX

Windows

Embedded hardware

Disaster recovery

Change management

Team collaboration

Education

Bachelor’s degree

Tools

NetBackup/Veeam

NetApp NAS/SAN

Job description

Cornerstone Defense is seeking a Cyber Systems Engineer in Sunnyvale, CA. This on-site role requires Active Secret or Top Secret clearance and an active Security+ certification.

Salary ranges from $90,000 to $165,000, with a 9x80A work schedule and opportunities to support critical defense systems. Responsibilities include IT and cyber-systems security support for AEHF-related systems, maintaining secure and reliable environments, and collaborating with diverse teams to implement RMF-based