Network Engineer

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 seeks a motivated, career and customer-oriented Network Engineer to join our team in Chantilly, VA. This is an onsite position.

Responsibilities include but are not limited to:

• Perform Tier II and Tier III network engineering support, while designing advanced WAN, LAN, and data center solutions

• Monitor and configure networks utilizing SolarWinds, Cisco DNAC, and Cisco ISE to analyze complex network requirements and ensure complete, functioning infrastructure

• Create, maintain, and interpret highly detailed technical network diagrams, routing topology schemas, and robust hardware configuration baselines

• Coordinate across large internal teams, stakeholders, and Sponsor authorities to drive infrastructure agendas and successfully navigate systems engineering processes

• Participate in all phases of the ITIL Service Lifecycle, including submitting Change Requests and maintaining security event monitoring policies

• Evaluate current network architectures, inventory complex routing pathways, and recommend process improvements to optimize performance and throughput

• Deliver end-to-end functional analysis, requirements specification, cost estimation, and engineering package releases for customer production IT environments

Minimum Qualifications:

• High School Diploma or GED with 7+ years of progressively responsible experience in Network Engineering, Network Analysis, or a related technical discipline

• Cisco Certified Network Associate (CCNA) certification, or equivalent routing/switching technical certification, ex., Juniper Networks Certified Associate – Junos (JNCIA-Junos)

• DoD 8570IAT Level II Certification, e.g., Security+

• DoD 8570.1 / DoD 8140.01 (IAT III Level) certification required within 6 months of hire, e.g., SecurityX

Preferred Qualifications:

• Bachelors degree in an engineering discipline

• Experience using and administering SolarWinds alongside deep knowledge of Microsoft Windows Systems, HP SANs, and VMware products

• Advanced experience managing VPNs, GRE tunnels, routing protocols (BGP E/I, OSPF), VLANs, VRFs, and configuring KGs

• Strong familiarity with Cisco ACI, data center fabric best practices, Ansible, and Desired State Configuration (DSC)

• Practical knowledge of BICSI standards, terminating fiber and Cat 5 cabling, as well as familiarity with NSTISSAM TEMPEST/2-95 and CNSSAM TEMPEST/01-13 guidelines

Clearance Requirements:

• Must have a current and active TS/SCI 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.