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Network Engineer 3 w/ 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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