Senior Network Engineer

ManTech (


  Full Time   Employee   Contractor

United States

Become an integral part of a diverse team that leads the world in the Mission, Cyber, and Intelligence Solutions group. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, career and customer oriented Senior Network Engineer to join our team in the Stafford/Quantico, VA area to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech.

Responsibilities include, but are not limited to:
Interface with customers to collect and clarify requirements
Manage network communications testing, installation, and support, including LAN/MAN/WAN systems
Create and implement router and switch configurations
Identify and diagnose problems affecting network performance using software and hardware tools
Provide recommendations to enhance and improve network performance
Troubleshoot network systems as needed
Perform a broad spectrum of system engineering design, integration, and implementation tasks and activities, including personnel, hardware, software, budget, facilities, and/or equipment
Interface with vendors to address problem escalation during outages or periods of degraded system performance
Provide routing network facility test and analysis, including power, software, communications, machinery, lines, modems, and terminals
Provide quality assurance review and evaluation of new and existing networking products
Plans and coordinates major computer network initiatives.
Researches, evaluates, and recommends new computer network equipment and technologies.
Utilizes monitoring, performance analysis, network management, software and hardware equipment to trouble shoot and isolate problems, gauge network performance, and trace data and protocol activity.
Devises solutions to complex operational problems within the capacity and operational limitations of installed equipment.
Develops and executes contingency plans for network software and hardware failures including isolated and major outages.
Provides internal consulting, technical guidance, information and support to application developers, computer operations, workstation support, company management and departmental clients. Assists in internal training programs.

Position Requirements:
Requires Bachelor?s degree (in Computer Science, Engineering, or related technical field), and eight to ten years of related experience or equivalent.
Active DoD Top Secret SCI clearance
Cisco CCNP (R&S or Data Center) certification
Experience with MS Office products, including Word, Excel, PowerPoint, Outlook, Visio
Experience architecting, designing, implementing, and maintaining complex network infrastructures

Preferred Skills:
Cisco CCIE (R&S or Data Center) certification
Extensive knowledge of and experience with the following:
- Routers: Cisco ASR, 2900, CSR1000v; Juniper MX-5; Brocade NetIron; VyOS/Vyatta and/or Quagga
- Switches: Cisco 6500, 4500, 3800, 3700, 3600, 3130; Juniper EX-4200; Brocade ICX; Dell 8024; VMware Standard and Distributed vSwitch
- Firewalls / Encryptors: Cisco ASA; Sourcefire; Imperva Secure Sphere; Palo ALto 5000; McAfee NGFW; Juniper SRX and SG; Fortinet FortiGate; PfSense; KG-175D
- Layer 2 Technologies: STP, VLANs, PVLANs
- Layer 3 Technologies: Routing protocols (EIGRP, ISIS, OSPF, RIPv2, BGP)
- First Hop Redundancy Protocols (FHRP): HSRP, VRRP, and GLBP
- VPN technologies: MPLS (Layer 2 & 3), GRE, IPSEC
- Data Center technologies: Fabricpath, VDC, vPC, OTV, vxLAN, Nexus 7k, 5k, 2k, 1000v; B22-Dell; Fabric interconnects (6200UP), MDS (9000), UCS B & C Series; VMware NSX
- Storage technologies and capabilities: FC, FCoE, VSANs, WWNN, WWPN

Security Requirements:
Active DOD Top Secret SCI Clearance



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