Senior Network Engineer Deputy Team Lead

Leidos Digital sector is seeking an experienced Senior Network Engineer Deputy Team Lead to support mission-critical, enterprise-scale network infrastructure on the AFNCR ITS program at Joint Base Anacostia-Bolling (JBAB). In this role, you will be responsible for the end-to-end administration, deployment, security, and operational reliability of classified and unclassified core network hardware, boundary protections, High-Assurance IP Encryptors (HAIPEs), and data center switches.The ideal candidate brings deep technical expertise in Cisco enterprise and data center platforms, DoD STIG compliance, network telemetry, and collaborative incident resolution with defense agency stakeholders (e.g., 26th NOS, DISA).If this sounds like the kind of environment where you can thrive, keep reading!The Leidos Digital Sector is focused on digital modernization services such as enterprise IT solutions, cloud migrations, cybersecurity, analytics, SecDevOps, digital experience monitoring, and AI-enabled operations. Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your resume with us today!Work Schedule: Mon-Fri 10:00am – 6:00pm (Core Shift) | On-Call / Operational Standby Rotation.SummaryThe Senior Network Engineer Deputy Team Lead delivers mission-critical network engineering, infrastructure administration, and cyber security hardening across unclassified (NIPR) and classified (SIPR) enterprise environments. Operating within a high-tempo defense architecture, this role ensures maximum network availability, rapid fault isolation, and strict alignment with Department of War (DoW) directives and operational security mandates.Primary Responsibilities: Serve as the primary alternate to the Team Lead; assume operational control of shift workflows, task allocation, and daily priorities in the Team Lead’s absence.Maintain continuous operational surveillance of enterprise network infrastructure and transport systems to identify real-time alerts, hardware alarms, and traffic anomalies.Triage, isolate, and remediate Layer 1 through Layer 3 network incidents using established Standard Operating Procedures (SOPs) and automated network scripts.Escalate complex, cross-domain, or multi-system outages to senior leadership and advanced engineering teams with comprehensive troubleshooting logs.Provision, deploy, configure, and optimize enterprise-class routers, multilayer switches, and associated network appliances to ensure performance and redundancy.Execute operating system upgrades (Cisco IOS/IOS-XE) and firmware refreshes across the fleet.Liaise directly with external telecommunications carriers and hardware vendors to troubleshoot circuit degradations, resolve carrier outages, and conduct loopback testing.Plan, coordinate, and execute Authorized Service Interruptions (ASIs) strictly adhering to command-directed change management processes.Enforce DoW and local command cybersecurity directives by applying Security Technical Implementation Guides (STIGs) and remediating IAVM/patching vulnerabilities.Program, maintain, and manage Type-1 Inline Network Encryptors (INE) (e.g., TACLANE) at network Points of Presence (PoPs) using GEM-X or adjacent DoD element management suites.Strictly adhere to and maintain DoD Communications Security (COMSEC) material handling, accountability, and two-person integrity protocols.Lead technical execution for site modernization initiatives, lifecycle tech refreshes, and special engineering projects.Participate in unit on-call rotation schedules to provide rapid surge support for critical operational outages.Basic Qualifications: Typically requires BS degree and 8+ years of prior relevant experience or Masters with 6+ years of prior relevant experience, additional years of applicable experience will be accepted in lieu of a degree. Must hold and maintain an active DoD Secret clearance.Must meet DoD 8140 IAT Level II or III baseline certification requirements: Cisco Certified Network Associate (CCNA) . CompTIA Security+ CE OptionalExpert-level proficiency configuring and troubleshooting Virtual LANs (VLANs), VLAN Trunking Protocol (VTP), Port Security, Spanning Tree Protocol (STP/RSTP/MSTP), 802.1Q trunking, and L2/L3 ether channels.Extensive hands-on experience designing, implementing, and diagnosing dynamic routing protocols, specifically EIGRP, OSPF, and IS-IS.Demonstrated success troubleshooting physical (Layer 1) and data link (Layer 2) transport fabrics across both unclassified and classified enclaves.Hands-on experience configuring, keying, and administering KG-17XX series encryptors, HAIPE devices, and GEM-X management systems.Preferred Qualifications: Direct hands-on administration of Cisco Identity Services Engine (ISE) for 802.1X network access control and policy enforcement.Experience deploying and managing software-defined infrastructure using Cisco Catalyst Center (DNA Center).Prior operational familiarity with Air Force District of Washington (AFDW), Air Force National Capital Region (AFNCR), or unified Air Force communications architectures.Experience delivering enterprise IT and communications support within high-security National Capital Region (NCR) campuses, such as The Pentagon, Joint Base Andrews (JBA), or Joint Base Anacostia-Bolling (JBAB).#AFNCRIf 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 4, 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.Pay Range:Pay Range $107,900.00 - $195,050.00The Leidos pay range for this job level is a general guideline onlyand 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.SummaryLocation: Washington, DCType: Full time