Cyber Systems Engineer

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

Cyber Systems Engineer

Sunnyvale, CA

Active Secret or Top Secret

Salary Range: $90,000 – $165,000

Certification Requirements: Current Security+ (CompTIA)

Company Overview:

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.

Job Responsibilities:

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 (NetBackup/Veeam).
• Storage Management– install, secure, and monitor NetApp 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.

Company Benefits:

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.