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NetworkEngineer 3 with 10 years experience

Annapolis Junction, MD · Information Technology

    Responsibilities include, but are not limited to:

    • Responsible for the critical review of, and providing recommendations on, networks or network service design, maintenance, and implementation, including operational considerations based on customer requirements, operational experience and technical knowledge.

    • Responsible for the architectural design, deployment and documentation of new network requirements and changes to current network configurations.

    • Oversee a major network architecture upgrade to include white-paper design, deployment, and configuration of devices.

    • Provide fault analysis, isolation and correction, configuration, and upgrades of network devices to include Cisco Routers, Firewalls, and Switches.

    • Provide support for customer networks involving cross-domain solutions, including VPNs, one-way data transfers, unclassified mission related infrastructures, and Taclane 175 encryption devices.  Specific configurations include routing using MPLS/VPLS, OSPF, EIGRP at the Core and Distribution devices and switching at the Access devices.

    • Experience in reverse engineering systems in an attempt to detail the required system specifications, external interfaces and environmental requirements.

    • Build systems and networks that would support the system and integrate it into the customer infrastructure.

    • Provides recommendations and critical reviews of network or network service design, maintenance, and implementation, including operational considerations based on customer requirements, operational experience, and technical knowledge.

    • Provides daily oversight and guidance in managing operational matters and mentoring entry level engineers in all aspects of networking

    • Configure and troubleshoot Cisco catalyst switches (Spanning Tree, Port Security, VTP,Ether channels, VLANs)

    • Configure and troubleshoot Cisco ASR routers (including HSRP, OSPF, BGP, route-map)

    • Configure/Troubleshoot Cisco ASA firewalls

    • Configuring and troubleshooting BIND, DHCP, and DNS servers

    • Configure and troubleshoot HTTP / SSL / TLS based issues

    • Troubleshoot ACL/NAT issue on ASAs

    • Create router/switches templates for network standardization

    • Monitors system performance and implements performance tuning

    • Use of Linux network troubleshooting tools to solve complex network issues (tcpdump, ssldump, curl, wget, mtr, tcp traceroute, nmap, openssl, tshark)

    • Develop bash and/or python scripts, utilities and tools used for network troubleshooting

    • Troubleshoot various DNS, SMTP, IP routing, latency, and connectivity issues

    • Implement TCP/IP & related services-DHCP/DNS

    • Install/Upgrade Cisco Switches and Firewalls (ASA) IOS using TFTP

    • Implement SSH/RADIUS authentication on Cisco Hardware

    • Troubleshoot network problems using Protocol Analyzers

    • Maintain all LAN/WAN connectivity

    • Document network problems and resolution for future reference

    • Oversee software and network security

    • Tier 3, On-call/after-hours support

    Basic Qualifications:

    • Shall have ten (10) years of experience in the planning, design, development, implementation and technical support of multi-platform, multi-system networks to encompass diagnosing network performance shortcomings and designing and implementing performance improvements.

    Preferred Qualifications:

    • Ten (10) years of experience designing and implementing network solutions for complex, high performance systems composed of UNIX or LINUX based hardware platforms

    • Significant experience provisioning and sustaining network infrastructures and have experience developing, operating, and managing networks required to operate in a secure PKI, IPSEC, or VPN enabled environment

    • Significant experience with CISCO network equipment, i.e. 2800 series, 6509, 6513, 3825, 3750, 4900, ASR-1004 & 1006, etc.

    • Cisco Certified Network Associate (CCNA) certified at the Professional level in Network Security (CCSP), Network Design (CCDP), and/or Routing & Switching (CCNP)

    • Able to understand routing protocols, QOS, be able to implement traffic shaping and policing on the network, and understand IPSEC tunneling

    • At least three years of direct experience with and intelligence community or signals intelligent activity.

    • CCNA Security or Security+ CE or higher certification 

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