Senior Network Engineer

Leidos•Camp Springs, MD

3d•Onsite

About The Position

Leidos Digital Sector is seeking a Senior Network Engineer to support mission-critical, enterprise-scale network infrastructure on the AFNCR ITS program at Joint Base Andrews and Joint Base Anacostia-Bolling. The role covers end-to-end administration, deployment, security, and operational reliability for classified and unclassified core network hardware, boundary protections, High-Assurance IP Encryptors (HAIPEs), and data center switches. The engineer will work with Cisco enterprise and data center platforms, DoD STIG compliance, network telemetry, and defense agency stakeholders including the 26th NOS and DISA. The position is based at Joint Base Andrews and Joint Base Anacostia-Bolling. The core schedule is Monday through Friday, 10:00 a.m. to 6:00 p.m., with an on-call/operational standby rotation.

Requirements

Typically requires a bachelor's degree and 8 or more years of relevant experience, or a master's degree and 6 or more years of relevant experience; additional applicable experience may be accepted in lieu of a degree.
Active DoD Secret security clearance and U.S. citizenship.
Meet DoD 8140 IAT Level II or III baseline certification requirements with CCNA or CCNP Enterprise.
Hands-on engineering experience configuring and maintaining Cisco Catalyst and Cisco Nexus switches and routers.
Experience administering Cisco Catalyst Center (formerly DNA Center), Cisco ISE, and F5 BIG-IP (LTM/GTM).
Hands-on experience loading key material, configuring, and maintaining TACLANE/HAIPE hardware, including KG-175D and KGV-72.
Working knowledge of DISA STIG implementation and network compliance remediation.
Practical understanding of multicast routing protocols, including PIM-SM/DM and IGMP, and SNMP monitoring tools such as Cacti.

Nice To Haves

Practical scripting ability in Python and/or experience automating network provisioning and configuration drift auditing with Ansible.
Familiarity with Cisco SD-WAN and Cisco Application Centric Infrastructure (ACI) fabric architectures.
In-depth knowledge of IPv6 addressing, dual-stack configurations, and routing protocols.
Familiarity operating within air-gapped systems and classified defense networks such as SIPRNet.
Prior operational experience supporting Air Force, Pentagon, or AFNCR network environments, including Joint Base Andrews and Joint Base Anacostia-Bolling.
CompTIA Security+ CE is optional.

Responsibilities

Deploy, provision, configure, and maintain high-availability data center routing and switching hardware, including Cisco Catalyst and Nexus platforms and high-performance server network interfaces.
Maintain physical and logical infrastructure records, including rack elevation diagrams, patch and port maps, cable plant documentation, and physical asset management databases.
Identify single points of failure across the network topology and implement redundancy and fault-tolerant architectures.
Administer Cisco Catalyst Center and Cisco Identity Services Engine (ISE) for device profiling, automated access control, and 802.1X policy enforcement.
Manage and configure F5 Application Delivery Controllers (LTM/GTM) to provide high availability, load balancing, and traffic distribution.
Administer RSA Authentication Manager to facilitate multi-factor authentication for network devices and appliances.
Install, configure, key, and maintain Type-1 HAIPEs, including TACLANE KG-175D and KGV-72 equipment, across classified and unclassified enclaves.
Harden network elements and perimeter boundary devices in accordance with DISA STIGs and DoD cybersecurity directives.
Coordinate with cybersecurity and facility teams to ensure physical and logical boundary protection controls are ready for DISA audits.
Monitor network performance, capacity, and environmental health using Cacti and enterprise SNMP-based telemetry tools.
Deploy, maintain, and troubleshoot multicast routing architectures, including PIM and IGMP snooping, supporting enterprise IPTV over local area networks.
Serve as the primary technical point of contact for operational entities, including the 26th NOS and DISA, and facilitate troubleshooting and resolution of outages or degraded conditions.
Author and coordinate Authorized Service Interruptions through change governance boards, including rollback plans and stakeholder communications.
Develop, standardize, and maintain SOPs and runbooks aligned with Air Force instructions, environmental standards, and safety policies.
Participate in disaster recovery exercises, perform regular system backups, and validate physical and logical restoration procedures.
Participate in a recurring Tier-3 operational standby/on-call rotation for emergent off-hours network degradations.