Principal Network Engineer Team Lead - TS/SCI clearance

Clearance Level
Top Secret
Network Engineering
Arlington, Virginia

REQ#: RQ138559

Travel Required: Less than 10%
Public Trust: None
Requisition Type: Regular

GDIT is hiring a Principal Network Engineer Team Lead to oversee the technical execution of our Core Transport Network Engineering team on our JSP Enterprise Transport Management (ETM) contract at the Pentagon in Arlington, VA.

This position provides technical leadership, oversight, and direction to the Core Transport Network Engineering team and mentors and instructs network engineers on best practices and the execution of network enhancements and upgrades and troubleshooting efforts in a large and complex network environment.

A successful candidate will be responsible for the health and maintenance of a large, complex networking infrastructure. This includes providing network administration and operational support to more than 8000 networked devices. The 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. Successful candidates should be able to work both independently and as part of a team.

Other responsibilities include: 

  • Act as a subject-matter expert to network routing and switching, as well as network performance monitoring and troubleshooting.

  • Review completion and implementation of system additions and/or enhancements and makes recommendations to management and/or clients.

  • Evaluate new application, infrastructure and cloud decisions in 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.

  • Provides 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

  • Performs daily system monitoring; verifies the integrity and availability of networking hardware, services, systems, and key processes; reviews system and application logs

  • Documents and conducts changes during ASI windows

  • Provides leadership in on-call troubleshooting and issue resolution as required

  • Develops and maintains installation and configuration procedures

  • Collaborate with the Security team to identify and remediate application and operating system vulnerabilities

  • Acts 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.

  • Review problems to understand the root causes of issues and ensure proper fixes are implemented.

  • Provide high level expertise to multiple projects and tasks.

  • Maintain current knowledge of relevant technology as assigned.

  • Participate in special projects as required.

Required Qualifications:

  • Active TS/SCI clearance

  • Must have a DoD 8570 IAT Level II certification

  • Must have ONE or more of the following active network certifications:

    • Cisco Certified Network Administrator (CCNA)

    • Cisco Certified Network Professional (CCNP)

    • Aruba Certified Switching Associate (ACSA)

  • Bachelor’s Degree in Computer Science or a related technical discipline.

  • 15 or more years of related information technology experience.

  • 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

  • Experience with network security, including firewall, IDS/IPS, VPN, and vulnerability remediation

  • Creating and documenting processes and creating work instructions

  • Excellent hardware troubleshooting experience.

  • Possess flexibility to operate in a highly dynamic environment while ensuring a high level of operational effectiveness

  • Experience working as a part of a large team and working directly with customers

  • Experience with supporting teleworkers and remote access technologies

  • Experience creating scripts to automate routine administration tasks

  • Strong oral and written communication skills

  • Strong customer service skills

  • Must be willing to report onsite as indicated above

Desired Qualifications:

  • 3+ years of SME level experience supporting DOD, DISA, or JSP Network environments.

  • Experience with proposals

  • Experience with F5 load balancers to include troubleshooting, configuring, upgrading, maintaining, and monitoring an enterprise F5 load balancer network architecture

  • F5 Network certification

  • Experience with Infoblox IP Address Management (IPAM) and DHCP preferred

  • Experience utilizing Remedy ITSM

  • Experience administering and troubleshooting server operating systems such as Linux, Windows, or UNIX

  • Experience with LDAP/PKI

  • Experience with Aruba network devices

  • Experience with Arista network devices

  • Experience documenting network topology using Visio









About Our Work

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

COVID-19 Vaccination

GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on the status of the federal contractor mandate and customer site requirements.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.