Network Administrator

Advance your career on one of the nation's most important ISR programs. Leidos is seeking a Network Engineer to support complex, classified network operations at Fort Meade. If you thrive in high-tempo environments and want to tackle real national-security challenges, this role puts you at the center of the mission. What You'll Do

• Manage and secure LAN/WAN environments across SIPR, NIPR, and other classified networks
• Maintain C4I infrastructure, cryptologic equipment, routers, switches, fiber, and network hardware
• Implement security patches, TCNO updates, STIGs, and OS upgrades
• Troubleshoot complex network, VoIP, and interoperability issues
• Support users, leadership, and help desk operations; track and resolve trouble tickets
• Maintain network maps, configurations, backups, and contingency plans
• Investigate malware/unauthorized software and ensure compliance with DoD cyber requirements
• Install, integrate, and test new or modified hardware, software, and network components, MANTECH seeks a motivated, career-driven, and customer-focused Senior Linux and VMWare System Administrator to join our team in Laurel, MD. This position supports the high-visibi…

• 9 days ago

• Bachelor's degree and 8+ years of relevant experience. 4+ additional years of related experience OR advanced IAT level III certifications ( CISSP, CASP+, or CCNP ) may be considered in lieu of a degree
• TS/SCI (polygraph required after hire)
• Experience managing classified/unclassified networks, routing/switching, authentication services, and network security
• DoD 8570 IAT Level II (Security+ CE or equivalent)
• Experience applying security patches and TCNO updates, * Current polygraph
• Cisco/Juniper experience (CCNA, CCNP, JNCIA, JNCIS)
• Experience with SolarWinds, Junos Space, STIGs, Cisco ISE, PowerShell DHCP
• Knowledge of DoD networks, VoIP, VMWare VMCP, and SecureView environments

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at . Securing Your Data Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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. Original Posting: April 8, 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: Pay Range $92,300.00 - $166,850.00 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. About Leidos 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 ., © 2026 Careerjet All rights reserved