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Systems Engineer Security Clearance

Job in Sunnyvale, Santa Clara County, California, 94085, USA
Listing for: Cornerstone Defense
Full Time position
Listed on 2026-03-10
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 100000 - 130000 USD Yearly USD 100000.00 130000.00 YEAR
Job Description & How to Apply Below
Position: Systems Engineer with Security Clearance
Title:

Systems Engineer

Location:

Sunnyvale, CA Security Clearance:
Secret Required to start (Will eventually have to get Top Secret) Salary: $100k - $130k

Work Schedule:

Onsite | 9/80 work schedule | Department-wide team Fridays with social events Contract Duration: 6+ months, with potential extensions 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.

Position Overview:

We are seeking Systems Engineer at varying experience levels (Entry-level through Experienced) to support mission-critical systems in a dynamic environment. This role blends systems administration, configuration management, cybersecurity, and engineering support across sustainment and development environments. Candidates will work closely with cross-functional teams to ensure system reliability, compliance, and performance. Role Level

Description:

* Junior-level to experienced, but still a learner.
* Bachelor's degree and 2+ years experience OR equivalent combination of education and experience. Responsibilities:
* Provide systems administration and help desk support for sustainment and development environments across multiple operating systems, including Windows, Solaris, and Red Hat Enterprise Linux.
* Perform configuration and data management, including software builds using Change Management (CM) tools.
* Collaborate with functional teams to resolve findings/issues and actively participate in Agile activities.
* Develop and apply cybersecurity solutions to ensure compliance with computer security policies and Risk Management Framework (RMF).
* Execute software installations, updates, and patches, including troubleshooting and technical support.
* Maintain and develop documentation such as Version Description Documents (VDDs) and job aides.
* Support Digital Transformation initiatives, CDRL preparations, and ad hoc engineering projects.
* Generate and document metrics, tracking and reporting all efforts accurately. Additional Duties:
* Provide operational support, including:
* Resetting user passwords.
* Adjusting satellite positions.
* Monitoring telemetry systems.
* Resolving communication issues.
* Supporting data center operations.
* Travel to remote sites as needed to perform assigned tasks. Qualifications

Required:

* Current Security+ Certification.
* Experience with Windows, Solaris, and Red Hat Enterprise Linux systems.
* Familiarity with Change Management tools and Agile methodologies.
* Strong understanding of cybersecurity principles and RMF compliance.
* Ability to troubleshoot complex technical issues across multiple platforms. Preferred:
* Experience in satellite operations or telemetry systems.
* Knowledge of software build processes and configuration management.
* Strong documentation and communication skills. 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.
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