Senior Network Engineer
Company: NXTKEY CORPORATION
Location: Woodbridge
Posted on: February 16, 2026
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Job Description:
Job Description Job Description Company Description NXTKey
Corporation has been delivering Information Technology, Information
management, Information Assurance (IA) and cybersecurity solutions
to US Federal Government and Commercial Clients since 2005. Job
Description We are searching for a Senior Network Engineer to
support our work for the National Center for Biotechnology
Information (NCBI) at the National Library of Medicine (NLM), an
institute of the National Institutes of Health. This opportunity is
full time and onsite at the NIH-NCBI in Bethesda, MD with option
for some remote work. Ready to build the future of hybrid onprem
and cloud networking? We're seeking a Senior Network Engineer with
a passion for designing and deploying high-performance networks. If
you have deep expertise with Arista EOS and CloudVision, and a
proven track record of modernizing legacy infrastructure, you're
exactly who we're looking for. In this role, you won't just
maintain networks; you'll be a technical leader, driving innovation
and shaping our network architecture. You'll work with the latest
technologies like Spine-and-Leaf, VxLAN, EVPN, and BGP, and use
your Python scripting skills to automate everything you can. This
is your chance to be a key contributor to a critical scientific
mission to improve health and advance medical breakthroughs. Duties
& Responsibilities: Architect and Deploy: Design and implement
cutting-edge, high-performance network architectures, with a focus
on Spine-and-Leaf designs. Master Arista: Leverage your deep
knowledge of Arista's Extensible Operating System (EOS) and
CloudVision platform. Manage F5: Configure and maintain F5 BIG-IP
platforms, including virtual servers, pools, and iRules. Automate
Everything: Use Python and other Linux tools to automate network
management and streamline operations. Lead the Way: Act as a
technical leader, mentoring team members, handling complex issues,
and serving as a subject matter expert. Modernize and Support:
Evolve our legacy networks for cloud-native environments and
provide expert support to resolve complex network issues. Load
Balanced Application Delivery: Implement load balancing strategies
(e.g., round robin, least connections) to optimize application
performance and ensure high availability. High Availability:
Setting up and manage Arista and F5 device clusters in
active/standby or active/active configurations to provide failover
capabilities. AAA (Authentication, Authorization, and Accounting):
Strong knowledge of AAA frameworks for network access control.
Hands-on experience configuring and managing TACACS, Radius for
device administration security in Cisco ICE. Network Hardware
Lifecycle Management: Responsible for all network device patching,
including security fixes and OS updates. Track device vendor
support timelines and manage end of life transitions to updated
hardware models. Network Monitoring: Monitor network traffic and
alerts for proactive management and capacity planning. Provide up
to date network metrics to all technical teams for better product
development and troubleshooting. Qualifications Qualifications
Required 10 years of hands-on experience in network engineering. A
CCIE or similar advanced networking certification is a plus. Strong
experience with Arista EOS/CloudVision and F5 BIG-IP. Expertise in
protocols like BGP, OSPF, VxLAN, and EVPN. Proficiency in Python
scripting and network automation. Excellent communication skills
and the ability to work independently. Additional Information
Benefits and Salary We attract the best people in the business with
our competitive benefits package that includes medical, dental and
vision coverage, 401k plan with employer contribution, paid
holidays, vacation, and tuition reimbursement. We offer a
competitive salary commensurate with experience and location. The
targeted range for this position is $110,000 - $160,000. If you
enjoy being a part of a high performing, professional service and
technology focused organization, please apply today!
Keywords: NXTKEY CORPORATION, Rockville , Senior Network Engineer, IT / Software / Systems , Woodbridge, Maryland
