Mission One: Land The Job. Mission Two: Outdo What's Next. Come #OutsmartOutdo at Leidos!
Leidos is seeking a motivated TS/SCI cleared Junior Network Administrator to support the installation, configuration, and day-to-day management of enterprise network infrastructure. This role is an excellent opportunity for an early-career network professional to gain hands-on experience with routing and switching platforms, including Session Smart Router (SSR) / 128 Technology SD-WAN solutions, in a structured and security-conscious environment. The ideal candidate demonstrates a solid foundation in networking fundamentals, a willingness to learn vendor-specific technologies, and the discipline to operate within DoD network standards. The job duties will be performed on site at Langley Air Force Base, VA.
Roles and Responsibilities
Assist in the configuration, deployment, and ongoing management of routers, switches, and Session Smart Router (SSR) appliances across enterprise and edge network environments.
Support the design and implementation of routing policies, service policies, and traffic steering configurations on SSR/128 Technology platforms under senior engineer guidance.
Perform LAN switching administration — including VLAN configuration, spanning tree, trunking, and port security — on Juniper EX Series and/or Cisco Catalyst platforms.
Assist with the configuration and troubleshooting of routing protocols including OSPF and BGP (eBGP and iBGP) across enterprise WAN and data center environments.
Monitor network health, availability, latency, and throughput using network management tools; escalate anomalies and assist in root cause analysis.
Support configuration and maintenance of firewall rules, access control lists (ACLs), IPsec VPN tunnels, and other network security controls.
Execute software and firmware upgrades, patch management, and lifecycle maintenance activities for network devices in accordance with change management procedures.
Maintain accurate and up-to-date network diagrams, device inventories, and standard operating procedures (SOPs).
Coordinate with senior network engineers, system administrators, and security personnel to resolve network incidents and support planned infrastructure changes.
Participate in on-call rotation and assist with troubleshooting during network outages or degraded service events.
Basic Qualifications:
Bachelor's degree in Network Engineering, Computer Science, Information Technology, or a related field — or additional equivalent hands-on years of experience and certifications will be considered in lieu of degree.
Must have active and current DoD TS/SCI Clearance.
DoD 8570/8140-compliant certification at IAT Level II - CompTIA Security+ CE required at minimum.
Demonstrated understanding of OSI model, TCP/IP, subnetting, VLANs, routing protocols (BGP, OSPF, static routing), and WAN technologies.
Practical experience with LAN switching concepts on Juniper EX Series or Cisco Catalyst platforms, including VLANs, STP, and trunking.
Strong analytical and troubleshooting mindset, clear written and verbal communication, and the ability to work effectively in a team environment under supervision.
Preferred Qualifications
Juniper Networks Certified Associate (JNCIA-Junos) or progress toward JNCIS-ENT; Juniper SSR-specific training or certification a strong plus or Cisco CCNA.
Familiarity with Border Gateway Protocol — including eBGP and iBGP concepts, peer configuration, route policies, and basic troubleshooting in a multi-site or service provider-adjacent environment.
Exposure to Juniper Session Smart Router (formerly 128 Technology) platforms, including familiarity with session-based routing, service and tenant models, or WAN traffic steering concepts.
Hands-on experience with advanced switching features such as RSTP/MSTP, LACP/LAG, Q-in-Q, or Layer 3 switching on either Juniper EX Series or Cisco Catalyst hardware.
Working knowledge of IPsec VPN configuration, zone-based firewall policies, or experience with Juniper SRX Series security platforms.
Basic familiarity with network automation tools or scripting (Python, Ansible, or Junos) for configuration management or compliance checks.
CompTIA Network+, or other vendor-neutral networking credentials demonstrating a broad networking foundation.
#DINM
DABAOPP1
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:June 12, 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 Network Engineering, Computer Science, Information Technology, or related field (or equivalent experience)
- Active and current DoD TS/SCI clearance
- DoD 8570/8140-compliant IAT Level II certification - CompTIA Security+ CE (minimum)
- Demonstrated understanding of OSI model, TCP/IP, subnetting, VLANs, routing protocols (BGP, OSPF, static routing), and WAN technologies
- Practical experience with LAN switching concepts on Juniper EX Series or Cisco Catalyst platforms (VLANs, STP, trunking)
- Experience/configuration familiarity with routing protocols including OSPF and BGP (eBGP and iBGP)
- Ability to work effectively in a team, strong analytical and troubleshooting skills, clear written and verbal communication
- Work performed onsite at Langley Air Force Base, VA
- Willingness to participate in on-call rotation and assist during outages
- Familiarity with network monitoring and change management practices
- Juniper Networks Certified Associate (JNCIA-Junos) or progress toward JNCIS-ENT, Juniper SSR training, or Cisco CCNA
- Exposure to Juniper Session Smart Router (formerly 128 Technology) platforms and session-based routing concepts
- Familiarity with advanced switching features (RSTP/MSTP, LACP/LAG, Q-in-Q, Layer 3 switching)
- Working knowledge of IPsec VPN configuration, zone-based firewall policies, or Juniper SRX experience
- Basic familiarity with network automation or scripting (Python, Ansible, Junos)
- CompTIA Network+ or other vendor-neutral networking credentials
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.
