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IT025 Principal Network Engineer
We have an opening for a HALF-TIME (20hrs/week) Principal Network Engineer to support the High-End Computer Networking (HECN) task under NASA's Space and Earth Science Data Analysis (SESDA) contract. The HECN team operates high-performance networking solutions for science at the NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD (both remote and in-person work at the facility is required).
The focus of this position is on Network support (both hardware and software with an emphasis on software) including configuring, troubleshooting, and performance-tuning network equipment, for routers, switches, firewalls, etc. Candidates will be expected to support the operational network through maintenance and troubleshooting. In addition, the candidate will participate in designing and building high-end, customized networking and server solutions using cutting-edge technology to meet emerging requirements.
This is an ideal position for an experienced network engineer who is well-organized and reliable to contribute to and be a part of an established team of highly experienced networking engineers to build and operate high-performance solutions for science. Candidates should be willing to take ownership of assigned tasks, meet deadlines, be willing to learn, adapt quickly to changing requirements, and work both independently and as a part of a team. In addition, applicants will interact with customers so good communications skills are essential. We have an exceptionally supportive environment that is great for learning new skills and provides an excellent career path with increasing responsibilities.
Duties of the position include:
- Work closely with the existing HECN members to carry out network and server software management tasks
- Support the high performance networking requirements of the Goddard science and engineering community, including the LAN, MAN, and WAN environments, and the high speed network connectivity to the Internet2 R&E community
- Collaborate with the HECN team on designing, planning, implementing, and maintaining evolutionary changes to the network infrastructure, to add new capabilities, new customer projects, and to increase performance, and increase the redundancy and reliability of the network
- Utilize knowledge of IPv4 and IPv6 OSPF and BGP routing protocols, Ethernet and TCP/IP protocols, Linux network tools such as ethtool, netstat, ip, nslookup, and whois, and diagnostic tools such as ping, traceroute, nuttcp, and tcpdump, to diagnose and resolve network connectivity, latency, and performance issues
- Manage and utilize network monitoring capabilities such as MRTG, PRTG, and in-house tools to proactively evaluate network bandwidth usage over time to determine the need for network upgrades and to help automatically detect network problems and assist with troubleshooting of user issues
- Research new network equipment, and test and evaluate those that are deemed to be potentially useful for incorporation into the existing network infrastructure
- Work with multiple network vendors equipment, including Dell, Juniper, Edgecore, Cisco, and Arista, in support of the daily operation and management of the production network environment
- Develop and maintain scripts (shell, perl, python, ruby, etc) for monitoring the network using SNMP, sFlow, NetFlow, and the ARP, routing (IPv4 and IPv6), and MAC address tables maintained by the network switches and routers
- Work with collaborating enterprises on performing network R&D that will be beneficial to the evolution of the network and its customer base
- Implement and enforce mandated NASA/Federal network and system security requirements, while minimizing the impact to the user community to the extent possible
- Installing, configuring, and maintaining network equipment such as routers, switches, and firewalls
- Provide quality and timely network user support (end system to end system)
- Deploying critical patches and upgrades to network operating systems of switches and routers to ensure compliance with Information Technology (IT) security requirements
- Enforce computer and network access controls consistent with GSFC IT security policies
- In-person facility support work as required
Required:
Desirable Experience:
- Experience with multiple vendors network equipment is highly desirable
- Familiarity with Cisco ISE for Network Access Control (NAC), and system vulnerability scanning tools such as Nessus
- Familiarity with the Linux operating system and installing, configuring, and maintaining Linux network application software such as ntp, mrtg, snmp, and iptraf-ng
- Experience with the C coding language and familiarity with Open Source Software
- Experience with productivity suites (especially Office365)
- Familiarity with NASA IT environments, Federal IT requirements and guidelines (FISMA, NIST) and awareness of industry best practices (CIS Benchmarks, FDCC/USGCB) would be useful
Join the NASA family
Team ADNET brings over 30+ years of experience to information systems and professional services for the federal government. With a history of expertise in software development, computer network design, IT security, mission operations support, and educational outreach, Team ADNET is deeply embedded in the Space and Earth Science at NASA's Goddard Space Flight Center (GSFC) in Greenbelt, MD.
ADNET Systems, Inc. is working with Goddard Space Flight Center to fulfill NASA's vision for space exploration, and working with the Science and Exploration Directorate to fulfill its many missions.
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ADNET Systems, Inc.
Aug 05, 2025