Leidos Digital Modernization Sector is looking for a Senior Network Systems Engineer to work on the Army Global Unified Network (AGUN) – Increment 1 (INC1) program. The Global Enterprise Network Modernization – OCONUS (GENM-O) is a critical mission provider responsible for keeping the Army connected through global network modernization projects. The Army Global Unified Network (AGUN) - Increment 1 (INC1) will unify the next generation of Army transport to comply with the Joint Regional Security Stack (JRSS) divestiture mandate. A phased systematic approach is required to provide individual sites with standardized, updated technology systems to ensure the Army’s Information Technology (IT) infrastructure is equipped to provide soldiers with cutting-edge technology to ensure applications, data, and enterprise services are accessible, trusted, and interoperable across the globe.Possesses and applies a comprehensive knowledge across key tasks and high impact assignments. Plans and leads major technology assignments. Evaluates performance results and recommends major changes affecting short-term project growth and success. Functions as a technical expert across multiple project assignments. May supervise others.Primary Responsibilities:<ul><li>Assists with overseeing the network engineering and design process from initiation to closure.</li><li>Holds pivotal role on Remote Engineering &amp; Installation Teams (REITs) and Orchestration &amp; Automation Teams (OATs).</li><li>Assigns tasks, manages workloads, and provides performance execution leadership and guidance.</li><li>Responsible for the survey, engineering, installation, configuration, and reliable operation of computer systems, servers, and networks.</li><li>Develops deliverables including the Engineering Implementation Plan (EIP), Requirements Traceability Matrix (RTM), Project Drawings, Innovation Recommendation Report, and Concept Development Report.</li><li>Acts as a liaison between the AGUN program and customer, coordinating with the Program Management Office (PMO) for engineering and design solutions.</li><li>Implements industry best practices, including Model Based System Engineering (MBSE), Network Security Development Operations (NetSecDevOps) Digital Twin, and Security Development Operations (SecDevOps) methodologies, to enhance insight, decision-making, and process automation.</li><li>Manages data and information, develops RACI charts and Software Defined Networking (SDN) solutions.</li><li>Employs continuous improvement methods to analyze historical data trends for intelligence assessments.</li><li>Develops and integrates AGUN network and network orchestration solutions and configures network and network security devices in the Lab environment.</li><li>Surveys and tests existing infrastructure for potential re-use in designing enterprise capabilities.</li><li>Develops, maintains, and updates technical documentation such as enterprise architecture, application/system design, and network architecture and design.</li></ul>​Basic Qualifications:<ul><li>US Citizen with a Secret security clearance.</li><li>DoD 8570 certifications.</li><li>IAT II, OS.</li><li>Bachelor’s degree and 12+ years of related experience or a Masters and 10+ years of related experience. A combination of education and experience will be considered in lieu of a degree.</li><li>Demonstrated technical team leadership experience.</li><li>Demonstrated experience working within the Agile framework.</li><li>Prior experience with designing, deploying, testing, implementing, and migrating network infrastructure.</li><li>Hands on experience with SD-WAN technologies (e.g. Cisco, VERSA, Juniper, etc.).</li><li>Extensive knowledge/experience of large-scale WAN, MPLS, routing protocols (BGP, OSPF, EIGRP, ISIS), and internet technologies.</li><li>Strong campus/enterprise networking experience.</li><li>Able to conduct research into networking issues and products as required.</li><li>Able to frequently travel to CONUS/OCONUS locations 50% of time.</li><li>Demonstrated experience with Microsoft Visio.</li></ul>Preferred Qualifications:<ul><li>Prior experience working within Army’s IT infrastructure.</li><li>Familiarity with API automation/orchestration tools/systems such as Ansible and Python Scripting.</li><li>Familiarity working within structured CI/CD DevOps pipelines.</li><li>Strong understanding of virtualization, hypervisor, HCI, cloud-native, and container technologies.</li><li>Prior experience with Public/Gov/DoD Cloud environments and implementing virtualized network infrastructure.</li><li>Hands on experience with Firewalls (e.g. Palo Alto, Cisco, Juniper, etc.).</li><li>Familiarity/Experience with Remote Access VPN solutions, IPsec, TLS, PKI.</li><li>Strong understanding of SASE/SSE Zero Trust principles/products (Cisco Secure Access, Prisma, zScaler, VERSA, AppGate, etc.).</li><li>Professional and/or Expert level Certifications/Specializations in industry leading SDN technology (e.g. Cisco, Juniper, VERSA, etc.).</li><li>Maintain current knowledge of industry trends and tools to provide best-practice insight and best-in-class recommendations to management.</li><li>Demonstrated advanced technical, problem-solving, and communication skills.</li><li>Ability to solve problems and resolve project dysfunction using creativity or leveraging core values. Experience should be beyond just user admin level and include building environments from the ground up, maintenance and deep troubleshooting.</li><li>Prior experience with USAISEC drafting requirements and drafting site implementation deliverables (floorplans, wiring diagrams, logical diagrams, etc).</li></ul>If youre looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. Were already at step 30 — and moving faster than anyone else dares.<h2></h2><h2></h2><h2>Original Posting:</h2>September 16, 2025<div><div><div><div><div><div><div>For 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.</div></div></div></div></div></div></div><div></div><h2>Pay Range:</h2>Pay Range $104,650.00 - $189,175.00The 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 Holdings

Senior Network Systems Engineer

Leidos Holdings

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