Network Administrator

We are currently seeking a Network Administrator 3rd shift (10PM to 6AM) to join the Compartmented Enterprise Services Office (CESO) effort. This program is establishing a modern secure web service (SWS) operation as part of a state-of-the-art, highly automated platform capable of supporting a rapidly expanding customer population. This position is based in Arlington, VA and is 100% on-site. Primary Responsibilities Network monitoring of connections and performance to ensure network availability for user access and services. Proactively identify risks and issues in the network and complete actions to mitigate them. Able to plan, coordinate and implement network maintenance, installation, and security to protect and improve network infrastructure. Receive and review user requests to establish or resolve issues with user access to services. Troubleshoot and resolve network issues and elevate complex problems to senior engineers or vendors Configure, install, and maintain network devices and software Basic Qualifications Currently possess an active TS/SCI security clearance Currently possess DoD 8570 certification at least IAT level II, e.g Security+ce. BS in computer science or IT and 4+ years of experience. Additional experience may be considered in lieu of degree Comfortable working 24×7 shifts, including nights, weekends, and holidays. Experience monitoring network performance, security, and availability Experience in configuring switches and routers. Experience working with Dynamic routing protocols (BGP, OSPF) Ability to change and configure 802.1x Prior experience troubleshooting S2S/IPSEC tunnels connection. Experience conducting VLAN configurations Preferred Qualifications Prior experience with DISA and DISA’s support to mission partners TS/SCI w/CI Poly Preferred AWS Cloud service experience Experience with Palo Alto devices 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 August 28, 2026 Pay Range Pay Range $73,450.00 - $132,775.00 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 Pay and Benefits 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. 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 View email address on click.appcast.io. If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission. 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. #J-18808-Ljbffr