Senior Principal Network Engineer
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 oncall troubleshooting and resolution activities.
Develop and maintain installation, configuration, and process documentation.
Partner with Security teams to identify and remediate vulnerabilities.
Collaborate with crossfunctional teams to support diverse user needs.
Create automation scripts to support migrations and operational tasks.
Perform rootcause analysis and ensure effective longterm fixes.
Support multiple projects and stay current on emerging technologies.
Participate in special projects as assigned. WHAT YOU'LL NEED TO SUCCEED - REQUIRED: EDUCATION: Bachelors degree in a technical field or equivalent experience
YEARS EXPERIENCE: 10+ years of IT experience TECHNICAL SKILLS: 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 multisite 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 customerservice skills Experience supporting remote users and teleworkers
LOCATION: Arlington, VA (onsite at the Pentagon)
DESIRED QUALIFICATIONS: CLEARANCE: Active TS/SCI or TS with SCI eligibility TECHNICAL SKILLS: Experience with proposals, Remedy ITSM, Linux/Windows/UNIX administration, and Visio network diagrams
GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
Growth: AI-powered career tool that identifies career steps and learning opportunities Support: An internal mobility team focused on helping you achieve your career goals Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off Community: Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and youll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.
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