Staff Network Security Engineer

ManTech (


  Full Time   Employee   Contractor

United States

Become an integral part of a diverse team that leads the world in the Mission, Cyber, and Intelligence Solutions group. At ManTech International Corporation, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, career and customer oriented Network Security Engineer to join our team in the Chantilly, VA area to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech. The selected individual will be embedded in the Enterprise Operations Center monitoring and responding to network security alerts to ensure that the infrastructure’s network security posture.

Responsibilities include but are not limited to:

· Monitor IPSs and firewalls for unauthorized changes and pre-defined protocol violations in support of the infrastructures network security policies

· Monitor and respond to alerts from Cisco Access Control Servers to ensure the customer’s least privileged methodology is implemented across all networks and devices

· Execute ACAS and other network compliance tools

· Deliver regular network compliance reports

· Collaborate with our Information Assurance team to ensure all network security controls are properly implemented, monitored, and documented

· Create and maintain Visio network diagrams

· Provide recommendations to improve the network performance while maintaining security compliance

· Evaluate, design, document, tune, and set standards for network operations

· Utilizing monitoring, performance analysis, network management, software and hardware equipment to trouble shoot and isolate problems, gauge network performance, and trace data and protocol activity

· Provide status reports based on customer and program requirements

Position requirements:

· Bachelor’s degree (in Computer Science, Engineering, or Math) or equivalent, and two or more years of related experience

· Meet DOD 8570 requirements for IAT I

· Requires experience operating in a NOC/SOC environment, responding to network security alerts

· Experience using Solarwinds Network Performance Monitor or other SNMP-based monitoring system

Security Requirements:

US Citizenship and active TS clearance and SSBI


To apply for this job, contact:
Human Resources

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