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 us and make a difference in National Security!
Job Summary:
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.
Don't miss the opportunity to take your career to the next level and be part of an innovative and dynamic environment. Apply now!
Job Responsibilities:
- 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.
- Configure and troubleshoot F5 load balancing, including VIPs, pools, health monitors, SSL profiles, and traffic management.
- Troubleshoot complex network issues involving TCP/IP, DNS, DHCP, HTTP/HTTPS, 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.
Basic Qualifications:
- Bachelor’s degree in information technology, Computer Science, Engineering, or a related field, with 5+ years of relevant experience. Additional experience may be considered in lieu of a degree.
- Strong experience with Cisco switching, routing, and WAN/LAN technologies.
- 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, HTTP/HTTPS, SSL/TLS, and SMTP.
- Experience with VMware NSX or similar network virtualization platforms.
- Experience configuring, managing, or troubleshooting F5 load balancers.
- 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.
- Ability to manage and prioritize multiple tasks and stakeholder requirements.
- Security Clearance requirement: Active Top Secret with the ability to obtain and maintain a TS/SCI level clearance.
- Certification 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.
Preferred Qualifications:
- Experience supporting PCTE, cyber range, cyber training, or mission rehearsal environments.
- Experience with F5, Cisco ASA/Firepower, Palo Alto, or other firewall technologies.
- Experience with automation tools such as Ansible or Python for network configuration and management.
- Experience with DNS servers, mail exchange records, name records, and related troubleshooting.
- Experience with cloud environments such as AWS or Azure.
- Experience with Red Hat Identity Management, LDAP, Active Directory, Single Sign-On, or related identity services.
- Familiarity with DISA STIGs, DoD security requirements, and RMF processes.
- 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.
At 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.com
CONMD
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:July 28, 2026For 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.
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.
Skills Required
- Bachelor's degree in information technology, Computer Science, Engineering, or related field (or equivalent experience)
- 5+ years of relevant network engineering experience
- Strong experience with Cisco switching, routing, and WAN/LAN technologies
- Hands-on experience with BGP, OSPF, route maps, STP, and routing policies
- Strong understanding of TCP/IP networking, subnetting, VLANs, VPC networking, routing, NAT, DNS, DHCP, HTTP/HTTPS, SSL/TLS, and SMTP
- Experience with VMware NSX or similar network virtualization platforms
- Experience configuring, managing, and troubleshooting F5 load balancers (VIPs, pools, health monitors, SSL profiles, traffic management)
- 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 and coordinate technical teams and customers
- Active Top Secret security clearance with ability to obtain and maintain TS/SCI
- Current DoD 8570 IAT Level II/III Certification (e.g., Security+, CCNA, CISSP) or ability to obtain within 6 months
- Experience supporting PCTE, cyber range, cyber training, or mission rehearsal environments
- Experience with Cisco ASA/Firepower, Palo Alto, or other firewall technologies
- Experience with automation tools such as Ansible or Python for network configuration and management
- Experience with DNS servers, mail exchange records, and related troubleshooting
- Experience with cloud environments such as AWS or Azure
- Experience with Red Hat Identity Management, LDAP, Active Directory, Single Sign-On, or related identity services
- Familiarity with DISA STIGs, DoD security requirements, and RMF processes
- Strong written and verbal communication skills
- Four or more years of experience supporting cyber training, cyber operations, or cyber defense environments
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
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