Description Unleash Your Potential! At Leidos, we deliver innovative solutions by leveraging our diverse and talented workforce who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. If this sounds like an environment where you can thrive, keep reading! Do you thrive working in small teams that collaborate closely with customers? Are you intrigued by big data? Our prototype development program is seeking someone with a strong mission focus who is passionate about new development and rapid prototyping. We want someone who can help us discover smarter, innovative approaches to support mission operations, discover new analytics, enhance tradecraft, and much more!Our LOE program provides our customer's Operations organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact. Clickhereto learn more about how this program “Delivers Mission Success!”Your greatest work is ahead! If you’re a talented Senior Network Security Engineer, we want to hear from you. The Leidos National Security Sector is looking for someone like you to join our team in the Fort Meade, MD area. As part of this highly visible and fast-paced prime contract, you'll enjoy a competitive benefits package including four or more weeks of Paid Time Off, Flexible Schedules, Discounted Stock Purchase Plans, Education and Training Support, Parental Paid Leave, and more! Don't miss out on this incredible opportunity to take your career to the next level. Apply today and join one of the most dynamic teams in the industry.Are you ready to join a team dedicated to a mission? Begin your journey of a flourishing and meaningful career, share your resume with us today!Your Main Objective:Experienced with Windows & Linux systems at the command line, particularly installing OSs, mounting images, package installs, IP networking.Experience with VMs using ESXi, Nutanix; additional networking skills such as configuring ports, Cisco switches, NTP and/or chronyc.Ensure systems are compliant with Secure the Enterprise (STE)/Secure the Network (STN) requirements; familiarity with Xacta, LatteArt, SEAR.Maintain multiple SSPs and other documentation for compliance, coordinate with ISSOs and Information System owners as needed.Evaluate configuration of networking equipment; update hardware and software as needed; perform vulnerability scans, install patches.Provision accounts and containers to information systems; perform data transfers.What Sets You Apart:Bachelor's degree plus eight (8) years of relevant experience, or master’s degree plus 6-years of relevant experience or an associate’s degree plus ten (10) years of relevant experience or high school diploma/GED plus twelve (12) years of relevant experience may be considered.Degree must be in Network Engineering, Systems Engineering, Information Technology, or related field.Relevant experience must be in computer or information systems design/development, programming, information/cyber/network security, vulnerability analysis, penetration testing, computer forensics, information assurance and/or systems engineering. Additionally, must have experience in network or system administration.Security Clearance requirement: Possess active TS/SCI with Polygraph to be considered for this roleYou Might Also Have:System Administrator experienceRisk Management FrameworkAt Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you – apply today! Careers.leidos.comconmdCome break things (in a good way). Then build them smarter.We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”Original Posting:August 6, 2025For 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 $104,650.00 - $189,175.00The Leidos pay range for this job level is a general guideline onlyand 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.