Principal Network Engineer

Responsibilities for this Position Location: USA VA Arlington Full Part/Time: Full time Job Req: RQ221381 Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications Skills: Cisco Routers and Switches, Network Engineering, Network Infrastructures Certifications: None Experience: 8+ years of related experience US Citizenship Required: Yes Job Description GDIT is seeking a Principal Network Engineer to join our JSP ETM-NG (Joint Service Provider Enterprise Transport Management - Next Gen) team. Due to the nature of this role, the employee must report full‑time onsite in Arlington, VA. As a Principal Network Engineer, you will provide technical leadership, oversight, and direction to the Core Transport Network Engineering team and mentor and instruct network engineers on best practices and the execution of network enhancements and upgrades as well as troubleshooting efforts in a large and complex network environment. You will be responsible for the health and maintenance of a large, complex networking infrastructure and will provide network administration and operational support to more than 8,000 networked devices. The Principal Network Engineer will provide comprehensive network administration, security enhancements and remediation, and troubleshooting of network devices such as routers, switches, load balancers, VPNs, 802.11 Wireless, and VoIP. This position requires an understanding of best practices pertaining to network security and may require the development, deployment, and integration of network security services. Impact and Responsibilities Act as a subject‑matter expert in network routing and switching, performance monitoring, and troubleshooting Review completion and implementation of system additions and/or enhancements and make recommendations to management and clients Evaluate new application, infrastructure, and cloud decisions in the existing context of applications, infrastructure, standards, current business strategy, and future business strategy Determine system specifications, input/output processes, and working parameters for hardware/software compatibility Provide guidance and work leadership to less‑experienced IT staff and may have supervisory responsibilities Serve as liaison with senior clients, participating in meetings to ensure client needs are met Provide problem and incident resolution, including dealing with software and hardware vendor technical support Deploy and maintain network hardware, peripherals, services, and settings in accordance with industry standards and project/operational requirements Perform daily system monitoring; verify the integrity and availability of networking hardware, services, systems, and key processes; review system and application logs Document and conduct changes during ASI windows Provide leadership in on‑call troubleshooting and issue resolution as required Develop and maintain installation and configuration procedures Collaborate with the Security team to identify and remediate application and operating system vulnerabilities Act as a liaison with other groups to provide information sharing pertaining to the needs of the diverse set of computer users supported by the client as a whole Develop scripts and other automation solutions to aid in the completion of migration and integration tasks What You'll Need to Succeed (Required) Education: Bachelor's Degree. An additional 4 years of experience may be substituted in lieu of a degree Security clearance level: Active Top Secret required with the ability to obtain SCI Experience: 8+ years of related experience Certifications: Current IAT Level II certification required; in addition, candidate must possess one or more of the following active network certifications: Cisco Certified Network Administrator (CCNA), Cisco Certified Network Professional (CCNP), or Aruba Certified Switching Associate (ACSA) Minimum of 3 years of experience supporting DoW, DISA, or JSP Network environments Expert knowledge of information technology principles, methods, and techniques Extensive experience troubleshooting, managing, and monitoring the health of Cisco and Juniper routers and switches Extensive experience in Software Define Networks (SDN); broad understanding of network infrastructure topologies, security policies, firewalls, and the L2/L3 switch and router infrastructure Experience deploying, managing, and troubleshooting network systems, switching, and routing protocol standards such as TCP/IP, MPLS, OSPF, BGP, SDN, and 802.1x Experience managing and troubleshooting DNS, DHCP, IPAM, and NTP in a large multi‑site environment Experience with network security, including firewall, IDS/IPS, VPN, and vulnerability remediation Experience using network management and analysis tools such as SNMP probes, network taps, and traffic analyzers Experience with Network Management & Performance platforms, such as NetScout, IBM NetCool, SolarWinds NMS products, NetBrain, Infovista, ClearPass, Aruba, Arista Experience building configurations using CLI Benefits Growth: AI‑powered career tool that identifies career steps and learning opportunities Support: Internal mobility team focused on helping you achieve your career goals Rewards: Comprehensive benefits and wellness packages, 401(k) with company match, and competitive pay and paid time off Community: Award‑winning culture of innovation and a military‑friendly workplace The likely salary range for this position is $153,000 - $207,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location, and possibly contractual requirements and could fall outside of this range. Scheduled Weekly Hours: 40 Travel Required: Less than 10% Telecommuting Options: Onsite Work Location: USA VA Arlington Total Rewards at GDIT Our benefits package for all U.S.‑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 are most valuable about. Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans #J-18808-Ljbffr General Dynamics Corporation