Network and Security Support I

Leidos has a new and exciting opportunity for a Network Engineer in our Intel Sector’s, Cyber & Analytics Business Area (CABA) . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos , we offer competitive benefits , including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join our team supporting a cutting-edge Cyber program and make an impact by guiding the definition, implementation, and delivery of capability focused on Cyber Training systems. As a key player on our team, you will focus on network architecture, routing, switching, virtualization, load balancing, security, and performance-tuning across on-prem, cloud, and virtualized infrastructure.

Design, configure, maintain, and troubleshoot enterprise network infrastructure supporting mission and training environments.

Support Cisco routing and switching across LAN/WAN environments.

Configure and manage network virtualization technologies, including VMware NSX.

Support routing protocols including BGP, OSPF, route maps, redistribution, and related routing policies.

Troubleshoot complex network issues involving TCP/IP, DNS, DHCP, SSL/TLS, SMTP, and related protocols.

Support network performance tuning, capacity planning, and availability improvements.

Work with system, security, cloud, and application teams to support infrastructure requirements.

Support cyber training and simulation environments, including Red Team / Blue Team training scenarios and realistic cyber terrain reconstruction.

Assist with infrastructure management across on-prem servers, virtual environments, and cloud-hosted services.

Support network access control lists, firewall rules, segmentation, and secure connectivity requirements.

Document network designs, configurations, troubleshooting steps, and operational procedures.

Work directly with stakeholders, users, engineers, developers, vendors, and customer teams on technical requirements and issue resolution.

Bachelor’s degree in information technology, Computer Science, Engineering, or a related field, with 5+ years of relevant experience. Hands-on experience with BGP, OSPF, route maps, STP, routing policies, and enterprise routing design.

Strong understanding of TCP/IP networking, subnetting, VLANs, VPC networking, routing, NAT, DNS, DHCP, SSL/TLS, and SMTP.

Experience with VMware NSX or similar network virtualization platforms.

Experience with network hardware design, configuration, troubleshooting, and performance tuning.

Experience with Linux and Windows network administration.

Experience with network security controls, ACLs, segmentation, and secure network design.

Ability to troubleshoot complex issues across network, virtualization, server, and application layers.

Ability to work independently in a fast-paced environment while coordinating technical teams and customers.

Security Clearance requirement : Current DoD 8570 IAT Level II/III Certification, such as Security+, CCNA, CISSP or equivalent or the ability to obtain within 6 months of start.

Experience supporting PCTE, cyber range, cyber training, or mission rehearsal environments.

Experience with automation tools such as Ansible or Python for network configuration and management.

Experience with cloud environments such as AWS or Azure.

Strong written and verbal communication skills with the ability to work with customers, leadership, and technical teams.

Four or more years of experience supporting cyber training, cyber operations, or cyber defense environments.

For us, helping you grow your career is good business. Careers.leidos.At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. 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 $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.

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. 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. Securing Your Data

Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., com automated system – never from free commercial services (e.g., 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 .

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.