Junior Windows System Engineer

• Location: Reston, Virginia
• Type: Contract
• Job #3835

Windows Systems Engineer

Springfield, VA

Active TS/SCI with CI Polygraph


The Junior Windows Systems Engineer supports the configuration, deployment, and maintenance of Windows-based systems within a secure, mission-critical environment. This role works closely with the DevOps team and senior engineers to assist in system installation, patching, and performance monitoring across classified networks. Responsibilities include managing day-to-day Windows operations, monitoring system performance, and identifying potential issues to maintain consistent uptime and efficiency. The engineer will respond to user incidents, provide Tier II-level troubleshooting, and document resolutions to ensure repeatable and efficient processes.


Additional duties include maintaining accurate records of system performance metrics, assisting with Active Directory and Group Policy management, and supporting cloud-integrated environments such as AWS. The role also contributes to developing user training materials and onboarding documentation for new personnel.



Required Experience:

• Experience supporting Microsoft Windows Server and workstation environments, including patching, imaging, and configuration management.
• Familiarity with Active Directory, Group Policy, and basic PowerShell scripting.
• Experience supporting AWS or hybrid Windows-to-cloud deployments.
• Understanding of IT best practices in high-availability, security-sensitive environments.
• Strong troubleshooting, documentation, and communication skills with the ability to explain technical issues clearly.
• Proven ability to work collaboratively in a team-oriented, matrixed environment.
• Active Security+ certification.

Desired Experience:

• Bachelor's degree in Computer Science, Information Systems, or related field.
• Familiarity with federal IT environments, acquisition processes, or government contracting operations.
• Exposure to DoD or Intelligence Community systems and related compliance standards (e.g., DISA STIGs).

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.



Benefits Overview :
Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans * Generous PTO Policy * 401(k) * HSA and FSA options * Life and Disability Insurance * Tuition Reimbursement and Training * Perks at Work Discount Program * Referral Program * Leads Generation Program * CollegeAmerica 529 * Fitness Reimbursement Program * Travel Assistance * Norton Lifelock Benefit Solutions * Life Planning Financial & Legal Services *