Senior Network Engineer

General information

Requisition #


R66120


Locations


USA-VA-Chantilly


Posting Date


02/18/2026


Security Clearance Required


TS/SCI w/ Poly


Remote Type


Onsite


Time Type


Full time


Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!

***This is for a future opportunity***

MANTECH seeks a motivated, career and customer-oriented Senior Network Engineer to join our team in Chantilly, VA.

Responsibilities include but are not limited to:

• Maintaining the network fabric of the ITD IT system architecture.
• Remaining well versed in a multi-vendor environment for layer 2/3 switching and routing, firewalls, SAN directors, as well as virtual and cloud-hosted networking technologies.
• Installing, configuring, and maintaining entire physical networking infrastructure including firewalls and core/distribution/access switches and routers.
• Utilizing network monitoring applications for traffic, access, and performance of entire network.
• Ability to travel domestically.

Minimum Qualifications:

• Seven (7+) years of relevant experience in information technology, leveraging software applications and tools to meet customer requirements.
• Appropriate ND 50-05/DoD 8570.01-M certification.
• Experience in performing maintenance and upgrades of networks including servers, routers, switches, firewalls and networks.
• Demonstrated ability in configuring routers, switches, and firewalls with appropriate network engineering and communications protocols.
• Experience in providing innovating methods and technical solutions to ensure network performance.

Preferred Qualifications:

• Bachelor's degree in Computer Science, Systems Engineering, or other IT-related discipline; Three additional years of experience with an Associate's degree.

Clearance Requirements:

• Must have a current/active TS/SCI w/Polygraph.

Physical Requirements:

• Must be able to remain in a stationary position 50%
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
• Must be able to exchange accurate information in these situations.

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 View email address on click.appcast.io and provide your name and contact information.