Senior Network Administrator

General information

Requisition #

R71785

Locations

USA-WA-Seattle

Posting Date

10/30/2026

Security Clearance Required

Secret

Remote Type

Onsite

Time Type

Full time

Description & Requirements

Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we've been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now-protect and innovate with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Senior Network Administrator to join our team in Walla Walla, Washington.

Be a part of an agile team to provide innovative, customer focused, and cost-effective integrated enterprise IT support services in support of the client's vision of engineering solutions for the Nation's toughest challenges.

Responsibilities include but are not limited to:

• The Network Administrator is responsible for the building, support, administration, and optimization of the network and associated hardware and software.
• This role deploys and troubleshoots small-scale to medium network deployments, conducts routine tests to ensure operability of the network, and identifies network needs and capabilities from an end-user perspective.
• The Network Administrator troubleshoots intermediary network problems and escalates large-scale network issues appropriately.
• Install and support LANs, WANs, network segments, Internet, and intranet systems.
• Install, configure, manage, and maintain network infrastructure devices as well as all related hardware and software.
• Identify network needs and capabilities from an end-user perspective.
• Monitor the network to maintain integrity and operability.
• Deploy and troubleshoot small-scale to medium network deployments.

Minimum Qualifications:

• Requires a Bachelor's degree (or equivalent work experience) in Information Technology, Computer Science, or a related field. In lieu of Bachelor's degree, an Associate degree +2years relevant experience, or 4 years relevant experience is acceptable.
• Requires 2-5 years of experience in network administration for Windows, Linux, or VMware environments.
• Experience with industry router configurations and switch configurations.
• Working technical knowledge of network infrastructure including local area networks, wide area networks, wireless networking, routers, switches, load balancers, WAN optimizers, and cabling standards.
• Solid troubleshooting abilities through techniques and methods that isolate and identify faulty components or configurations so services can be quickly restored to normal levels of operation.
• Experience troubleshooting network connectivity (LAN, WAN).
• CompTIA Network+ and/or CCNA certification and a CompTIA Security+ certification
• Must maintain a 8140 IAT Lvl II certification.

Preferred Qualifications:

• Demonstrates excellent troubleshooting, problem-solving, communication, and teamwork skills, the ability to manage multiple tasks effectively, and maintains currency with industry trends and best practices.
• Demonstrates excellent troubleshooting, problem-solving, communication, and teamwork skills, the ability to manage multiple tasks effectively, and maintains currency with industry trends and best practices.;">Demonstrates excellent troubleshooting, problem-solving, communication, and teamwork skills, the ability to manage multiple tasks effectively, and maintains currency with industry trends and best practices.
• Familiarity with the USACE IT environment, regulatory requirements, and data security best practices are preferred.
• Familiarity with the USACE IT environment, regulatory requirements, and data security best practices are preferred.;">Familiarity with the USACE IT environment, regulatory requirements, and data security best practices are preferred.
• Have strong problem-solving and analytical skills and communicate effectively with technical and non-technical stakeholders.
• Have strong problem-solving and analytical skills and communicate effectively with technical and non-technical stakeholders. ;">Have strong problem-solving and analytical skills and communicate effectively with technical and non-technical stakeholders.

Clearance Requirements:

• Must be a US Citizen and have a current/active Secret clearance.

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations

The projected compensation range for this position is $116,400.00-$194,900.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.