The Digital Modernization Sector at Leidos currently has an immediate need for an experienced Senior Network Administrator for a new customer on a strategic High-Performance Computing (HPC) program. The Senior Network Administrator will need to be a self-starter with excellent analytical and problem-solving skills, flexibility, good judgment, and the ability to work within a team to mature the HPC capabilities of our customer.
Primary Responsibilities:
Provides Network support that requires system level design, architecture or enterprise security and security boundaries, datacenter virtualization, CAN/MAN/LAN infrastructure packet capture software, TCP/IP protocol stack, routing/switching protocols, stateful firewalls, and L3/L4 access controls (all three supported locations).
Basic qualifications:
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Must possess a TS/SCI clearance with polygraph
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IAT Level II Certification Required
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Candidates shall have a bachelor’s degree in computer science, Information Systems, or Network Engineering and eight (8) years of demonstrable experience in network (LAN/WAN) configuration, monitoring, security, and protection. In lieu of a bachelor’s degree, the individual shall have six (6) years of full time CS experience and at least six (6) years of demonstrable experience in network (LAN/WAN) configuration, monitoring, security, and protection.
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Have datacenter network design and architecture experience to include installation and configuration of Cisco routers, switches, firewalls, and IPSEC virtual private networks. With the following skills: Installation, configuration, and support of:
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Cisco IOS, CatOS, NxOS, filter and access control, Ciscoworks, TACACS+, ASA, FWSM, HP Openview, Cisco routers, Cisco Switches, F5/Cisco load balancers, InfiniBand, Juniper, Fiber Channel (FC) SAN, and VPN (IPSEC)
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Physical installation and configuration and troubleshooting of network routers, switches, load balancers and security devices.
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Strong knowledge of TCP/IP protocol stack and routing and switching protocols.
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Strong working knowledge of L2/L3 protocols
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Strong working knowledge of stateful firewalls, and L3 access controls.
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Working knowledge of Atlassian Tool Suite
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Able to support on-call requirements.
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Able to work in live call environment and utilize remedy and/or other ticketing system to track tasking.
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Virtualization products; VMWare and Solaris containers
Original Posting:April 1, 2025
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:Pay Range $89,700.00 - $162,150.00
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
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