Leidos is seeking a Network Engineer to support Federal Civil customer in the Washington, DC metropolitan area.
LOCATION: This position is remote; however, prefer candidates that are within driving distance to the Washington, DC area.
CLEARANCE: Must be a U.S. Citizen capable of obtaining and maintaining a Public Trust clearance prior to start.
POSITION SUMMARY:
This role supports the engineering, operation, maintenance, and modernization of secure, mission-critical enterprise networks across geographically distributed environments.
Working alongside the Senior Network Engineer, you’ll implement, configure, maintain, and troubleshoot network solutions across on-premises and hybrid cloud infrastructure. You’ll collaborate with engineering, cybersecurity, and service desk teams to keep the network available, high-performing, and secure while supporting modernization efforts. You’ll also contribute to documentation, configuration management, and continuous service improvement.
A strong foundation in networking and the ability to work across multiple network technologies are essential.
PRIMARY RESPONSIBILITIES:
- Serve as a Tier 2/3 technical resource for operational and engineering issues affecting mission-critical enterprise infrastructure, escalating complex architectural challenges to the Senior Network Engineer as needed.
- Assist in the planning, deployment, configuration, and maintenance of network infrastructure solutions across geographically distributed, multi-vendor environments.
- Analyze and troubleshoot technical network issues involving multiple systems, implementing approved corrective actions to maintain network reliability, performance, and security.
- Configure, maintain, and troubleshoot enterprise routing and switching infrastructure, including BGP, OSPF, VLANs, VRFs, routing redundancy, and network failover.
- Administer and support enterprise network security solutions, including Cisco Firepower, Firepower Management Center (FMC), ASA, firewall rule updates, access controls, and security hardening.
- Implement, monitor, and sustain secure site-to-site and remote-access VPN solutions, including Cisco Secure Client/AnyConnect and connectivity with external partners and vendors.
- Support and maintain hybrid cloud network connectivity integrating on-premises infrastructure with AWS networking services, including VPCs, Direct Connect, Transit Gateway, and load balancing.
- Administer enterprise wireless networking and network access control technologies, including Cisco Identity Services Engine (ISE).
- Support the execution of network infrastructure upgrades, modernization initiatives, lifecycle replacements, and security remediation activities under the technical guidance of senior engineering staff.
- Monitor network performance, availability, and capacity; assist in gathering metrics and implementing approved improvements to strengthen service delivery and operational resilience.
- Participate in incident investigations and root cause analysis, gathering diagnostic data and executing corrective and preventive tasks.
- Collaborate with internal engineering teams, cybersecurity teams, vendors, and service providers to troubleshoot issues, coordinate maintenance windows, and implement technical tasks.
- Update and maintain network diagrams, configuration records, technical implementation plans, and standard operating procedures (SOPs).
- Execute incident, problem, change, and service request management tickets while ensuring technical accuracy, thorough documentation, and adherence to SLAs.
- Partner with the Senior Network Engineer to test and implement network automation scripts, configuration templates, and process improvements to increase operational efficiency.
BASIC QUALIFICATIONS:
- Bachelor's degree and 4 years’ experience; additional years of experience accepted in lieu of degree.
- Hands-on experience designing, implementing, administering, and troubleshooting complex enterprise network infrastructure in production environments.
- Strong working knowledge and hands-on experience configuring and troubleshooting enterprise routing and switching technologies, including BGP, OSPF, VLANs, VRFs, and network redundancy/failover.
- Hands-on experience supporting and administering Cisco and/or Juniper enterprise networking platforms (such as Juniper EX/QFX & Junos OS, and Cisco ISR & IOS devices) in multi-vendor environments.
- Hands-on experience configuring, maintaining, and troubleshooting enterprise network security infrastructure, including Cisco ASA, Firepower & FMC, access control policies, and remote-access VPN solutions (Cisco AnyConnect/Secure Client).
- Demonstrated ability to troubleshoot multi-system network issues, assist with root cause analysis (RCA), and implement approved corrective actions.
- Experience executing network infrastructure changes, device upgrades, and security remediation activities in production environments following established change control procedures.
- Experience updating and maintaining accurate network diagrams, technical documentation, configuration records, and standard operating procedures (SOPs).
- Strong interpersonal and communication skills, with experience working alongside senior engineers, cross-functional teams, vendors, and ISPs to resolve operational issues.
- Familiarity or hands-on experience supporting AWS network infrastructure and hybrid cloud connectivity (e.g., VPCs, Direct Connect, Transit Gateways, load balancers).
- Experience administering enterprise wireless infrastructure and Network Access Control (NAC) solutions, such as Cisco Identity Services Engine (ISE).
- Exposure to virtual computing platforms (e.g., VMware/vSphere) as they relate to network connectivity, as well as Cisco CUCM/UC voice solutions.
- Active Cisco Certified Network Associate (CCNA) certification.
- Ability to obtain a DoD 8140 / IAT Level II baseline certification (e.g., Security+ CE, CySA+, CCNA-Security, GSEC, SSCP).
PREFERRED QUALIFICATIONS:
- Cisco Certified CCNP or Juniper JNCIP-ENT.
- Experience with Cisco Meraki wireless solutions.
- Experience with Cisco ISE.
- Experience with Dell switches and OS10.
- Experience with ServiceNow.
- Security+ CE certification.
*** Candidates selected for an interview should note that it will be conducted live via video, with cameras on at all times. As part of our identity verification process, a photo will be taken during the interview to confirm your identity and help protect against fraud. At hire, candidates complete formal identity verification.***
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:November 13, 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 and 4 years of experience, or additional experience in lieu of a degree
- Hands-on experience designing, implementing, administering, and troubleshooting complex enterprise network infrastructure in production environments
- Experience configuring and troubleshooting BGP, OSPF, VLANs, VRFs, routing redundancy, and network failover
- Experience supporting Cisco and/or Juniper enterprise networking platforms in multi-vendor environments
- Experience configuring and troubleshooting Cisco ASA, Firepower, FMC, access control policies, and remote-access VPN solutions
- Experience troubleshooting multi-system network issues, performing root cause analysis, and implementing corrective actions
- Experience executing network infrastructure changes, device upgrades, and security remediation under change control procedures
- Experience maintaining network diagrams, technical documentation, configuration records, and standard operating procedures
- Strong interpersonal and communication skills, including collaboration with engineers, cross-functional teams, vendors, and ISPs
- Familiarity or hands-on experience with AWS networking and hybrid cloud connectivity, including VPCs, Direct Connect, Transit Gateways, and load balancers
- Experience administering enterprise wireless infrastructure and Network Access Control solutions such as Cisco ISE
- Exposure to VMware or vSphere virtual computing platforms and Cisco CUCM or UC voice solutions
- Active Cisco Certified Network Associate certification
- Ability to obtain a DoD 8140 / IAT Level II baseline certification, such as Security+ CE, CySA+, CCNA-Security, GSEC, or SSCP
- Cisco CCNP or Juniper JNCIP-ENT certification
- Experience with Cisco Meraki wireless solutions
- Experience with Cisco ISE
- Experience with Dell switches and OS10
- Experience with ServiceNow
- Security+ CE certification
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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