Senior Principal Network Engineer
About The Position
GDIT is seeking a Senior Principal Network Engineer to help support our JSP ETM-NG activities at the Pentagon. Due to the nature of work this role entails, telecommuting is not allowed. You will provide technical leadership for the Core Transport Network Engineering team and ensures the health, stability, and performance of a large, complex enterprise network. This role oversees more than 8,000 network devices, guiding engineers on best practices, executing network upgrades, and leading troubleshooting efforts. Responsibilities include comprehensive network administration, security remediation, and support for routers, switches, load balancers, VPNs, wireless, and VoIP systems. The engineer works both independently and collaboratively across teams. MEANINGFUL WORK AND PERSONAL IMPACT • Serve as subject-matter expert in routing, switching, network performance, and troubleshooting. • Lead design reviews, system enhancements, and provide recommendations to management and clients. • Assess new applications, infrastructure, and cloud solutions for alignment with enterprise strategy. • Define system specifications and ensure hardware/software compatibility. • Mentor junior engineers and support technical staff; may provide supervisory oversight. • Act as senior liaison with clients, ensuring requirements and expectations are met. • Resolve incidents and coordinate vendor support when needed. • Deploy and maintain network hardware and services per industry standards. • Perform daily monitoring and review logs to validate system health and availability. • Document and execute configuration changes during maintenance windows. • Lead on‑call troubleshooting and resolution activities. • Develop and maintain installation, configuration, and process documentation. • Partner with Security teams to identify and remediate vulnerabilities. • Collaborate with cross‑functional teams to support diverse user needs. • Create automation scripts to support migrations and operational tasks. • Perform root‑cause analysis and ensure effective long-term fixes. • Support multiple projects and stay current on emerging technologies. • Participate in special projects as assigned.
Requirements
- Active Top Secret clearance
- DoD 8570 IAT Level II certification
- At least ONE active network certification - CCNA, CCNP, or ACSA
- Bachelor’s degree in a technical field or equivalent experience
- 10+ years of IT experience
- Advanced knowledge of IT principles, network engineering, and troubleshooting
- Extensive experience with Cisco/Juniper hardware and SDN technologies
- Proficiency with routing and switching protocols (TCP/IP, MPLS, OSPF, BGP, SDN, 802.1x)
- Experience with DNS, DHCP, IPAM, NTP across multi‑site environments
- Strong background in network security (firewalls, IDS/IPS, VPN, remediation)
- Familiarity with network monitoring tools (SolarWinds, NetScout, NetCool, NetBrain, Infovista, Clearpass, Aruba, Arista)
- CLI configuration experience and scripting for automation
- Strong documentation, hardware troubleshooting, and customer‑service skills
- Experience supporting remote users and teleworkers
- US Citizenship Required
Nice To Haves
- Active TS/SCI or TS with SCI eligibility
- Experience with proposals, Remedy ITSM, Linux/Windows/UNIX administration, and Visio network diagrams
Responsibilities
- Serve as subject-matter expert in routing, switching, network performance, and troubleshooting.
- Lead design reviews, system enhancements, and provide recommendations to management and clients.
- Assess new applications, infrastructure, and cloud solutions for alignment with enterprise strategy.
- Define system specifications and ensure hardware/software compatibility.
- Mentor junior engineers and support technical staff; may provide supervisory oversight.
- Act as senior liaison with clients, ensuring requirements and expectations are met.
- Resolve incidents and coordinate vendor support when needed.
- Deploy and maintain network hardware and services per industry standards.
- Perform daily monitoring and review logs to validate system health and availability.
- Document and execute configuration changes during maintenance windows.
- Lead on‑call troubleshooting and resolution activities.
- Develop and maintain installation, configuration, and process documentation.
- Partner with Security teams to identify and remediate vulnerabilities.
- Collaborate with cross‑functional teams to support diverse user needs.
- Create automation scripts to support migrations and operational tasks.
- Perform root‑cause analysis and ensure effective long-term fixes.
- Support multiple projects and stay current on emerging technologies.
- Participate in special projects as assigned.
Benefits
- Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match.
- To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave.
- To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available.
- We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Number of Employees
5,001-10,000 employees
