Onsite Network Engineer (TS/SCI) | WAN/LAN & Data Center

MANTECH; Virginia; On-site; USD 120,000 - 160,000; Full time

Job summary

MANTECH is seeking a motivated Network Engineer to join our team in Chantilly, VA. This onsite role requires a career- and customer-oriented professional capable of Tier II/III network support and complex infrastructure design.

You will work with SolarWinds, Cisco DNAC, and Cisco ISE while coordinating with multiple internal teams and Sponsor authorities. A TS/SCI clearance is required, with DoD certifications to be maintained within specified timelines.

Qualifications

• 7+ years of progressively responsible experience in network engineering or related field.
• CCNA or equivalent routing/switching cert (e.g., JNCIA-Junos).
• DoD 8570 IAT II certification (e.g., Security+).
• DoD 8570.1/DoD 8140.01 IAT III level cert within 6 months of hire.

Responsibilities

• Provide Tier II/III network engineering support and design WAN, LAN, and data center solutions.
• Monitor and configure networks using SolarWinds, Cisco DNAC, and Cisco ISE.
• Create and maintain detailed network diagrams and routing topology schemas.
• Coordinate with large internal teams and sponsor authorities to drive infrastructure agendas.
• Participate in ITIL Service Lifecycle activities, including change requests and security monitoring policies.
• Evaluate current architectures and propose optimizations for performance and throughput.
• Deliver end-to-end analysis, requirements, cost estimates, and engineering packages for production environments.

Skills

Network engineering

Tier II/III support

ITIL lifecycle awareness

Stakeholder collaboration

Education

HS Diploma or GED

Bachelor's degree in engineering (preferred)

Tools

SolarWinds

Cisco DNAC

Cisco ISE

Cisco ACI

Ansible

DSC

VMware

Job description

MANTECH is seeking a motivated Network Engineer to join our team in Chantilly, VA. This onsite role requires a career- and customer-oriented professional capable of Tier II/III network support and complex infrastructure design.

You will work with SolarWinds, Cisco DNAC, and Cisco ISE while coordinating with multiple internal teams and Sponsor authorities. A TS/SCI clearance is required, with DoD certifications to be maintained within specified timelines.