Senior Network Engineer (Cisco/Juniper)

ITC Federal, Inc.•Washington, DC

1d•Onsite

About The Position

The Senior Network Engineer is responsible for the design, administration, and sustained operation of NSD's wide area and local area network infrastructure. This is a hands-on engineering role that combines day-to-day operational support with higher-level responsibilities such as evaluating the impact of proposed network changes, troubleshooting complex connectivity and performance issues, and ensuring the network environment remains compliant with DoD Security Technical Implementation Guide (STIG) standards.

Requirements

10+ years of progressive Network Administration/Engineering experience, including direct responsibility for enterprise-scale routing, switching, and security infrastructure in a production environment.
Demonstrated, hands-on professional experience with Cisco and Juniper technologies, including configuration, troubleshooting, and lifecycle management of routers, switches, and firewalls in an operational network.
Hardware and platform experience with some combination of the following (not all required): Cisco routers: 2500, 2600, 3600, 3800, 4500, 9200, 9300, and 1200 series; Cisco Catalyst switches: 2900, 3500, 3700, 4500, 5500, 6500 series; Cisco Nexus switches (1000V, 2000, 5000, 7000), ASA 5500 series, Firepower Threat Defense (FTD), Cisco ACS, and ASR 1004 routers; Juniper routers, switches, and firewalls (SRX and EX series).
Strong working knowledge of core network protocols and technologies, including OSPF, BGP, IS-IS, RIP, IGRP/EIGRP, IPv6, HSRP, VRRP, AAA, TACACS, RADIUS, ACL, IPSec, GRE, PPTP, PPP, HDLC, ISL, 802.1Q, and 802.1X — with the ability to apply this knowledge to real-world design and troubleshooting scenarios, not just textbook familiarity.
Solid grounding in Layer 1 and Layer 2 troubleshooting and technologies, with the ability to isolate physical-layer and data-link-layer issues quickly in a live operational environment.
Ability to work 100% onsite in Washington, DC. This position does not support remote or hybrid work; candidates must be able to report to the DOJ NSD facility in Washington, DC on a daily basis.
Active Top Secret clearance required, with the ability to obtain DOJ Sensitive Compartmented Information (SCI) eligibility.

Nice To Haves

Cisco certifications such as CCNA or CCNP, demonstrating formal validation of routing, switching, and network engineering competencies.

Responsibilities

Administer, support, and maintain enterprise network capabilities across wide area and local area networks, ensuring consistent uptime and performance for a high-security mission environment.
Perform day-to-day network operations and support activities, including monitoring, configuration management, and routine maintenance of routing and switching infrastructure.
Evaluate proposed network changes for operational impact prior to implementation, identifying risks to availability, security, or performance and recommending mitigations.
Evaluate network performance trends and resolve network and connectivity problems, applying structured troubleshooting methodology across Layer 1 through Layer 3.
Manage local area network performance and proactively troubleshoot degradations before they affect end users or mission systems.
Maintain network infrastructure configurations in accordance with applicable STIG guidelines, supporting the organization's continuous compliance and audit readiness posture.
Partner with applications programmers and engineering staff working within the networking environment to ensure infrastructure changes align with application and system requirements.
Maintain accurate, up-to-date records of network configurations, changes, and incidents using Excel-based tracking tools and other documentation standards required by the program.