Cross Domain System Administrator

Job Description

The Digital Modernization Sector at Leidos currently has an opening for a Cross Domain Solutions (CDS) System Administrator supporting the HEITS contract as part of the Department of Homeland Security (DHS) under the Intelligence and Analysis (I&A) component. This is an exciting opportunity to use your System Administration skills to support the DHS Intelligence Enterprise Cross Domain Services (IECDS). The IECDS is the Enterprise Cross Domain Service Provider for the DHS IE.

It provides a broad range of Transfer and Access Solutions including multi-level file drop, multi-level email, multi-level database replication, various types of machine‑to‑machine transfers, automated low to high and high to low transfers.

• Handle escalated inquiries from the Tier 1 Classified Network Coordination Center (CNCC) Help Desk and resolve issues that require advanced problem‑solving skills and in‑depth knowledge.
• Maintain Windows and Linux servers in a virtual environment (including software releases and patches).
• Manage the CDS Service Now support queue, resolving incidents and fulfilling service requests (e.g., user access, group management, and form adjustments).
• Support all CDS maintenance activities to ensure proper functionality and deployment throughout the enterprise.
• Maintain and improve Operations & Maintenance (O&M) configuration management templates (in Jira Kanban / Confluence and SharePoint).
• Monitor system performance and respond to alerts.
• Work under the guidance of a CDS Subject Matter Expert (SME) to accomplish time‑sensitive projects.

• Bachelor’s Degree in a related discipline with 8+ years of relevant experience or Master’s Degree with 6+ years in a related discipline. Additional experience may be considered in lieu of degree.
• Willingness to learn / train to become proficient with Cross Domain Solutions technology.
• Experience with Linux (RHEL) and Windows Server configuration, administration, and troubleshooting.
• Working in an Agile project management environment.
• Ability to work in a team and a self‑starter who can work on their own.
• Excellent written and oral communication skills.
• Active Top Secret government clearance and the ability to obtain DHS EOD SCI.

• DHS or other government contract experience.
• Working knowledge of scripts to support patching, configuration, and other infrastructure team tasking using languages such as Python, Bash, or Power Shell.
• Experience working with Cross Domain Solutions.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

February 13, 2026

For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range $92,300.00 - $

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

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