Network Security Engineer Job at MANTECH, Chantilly, Loudoun County, VA

  • MANTECH
  • Chantilly, Loudoun County, VA

Job Description

MANTECH seeks a motivated, career and customer-oriented Network Security 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 security engineering support, while assisting in designing advanced WAN, LAN, and data center solutions.

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

  • Create, maintain, and interpret highly detailed technical network security 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 security 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 Security 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 8570 IAT 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)

  • Strong familiarity with Cisco Secure Firewall ( Firepower FMC)

  • 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.

Job Tags

Work at office

Similar Jobs

Timbers Defunct

Revenue Manager Job at Timbers Defunct

 ...seeking a highly organized and service-oriented revenue and reservations leader to support strategic pricing, inventory management, and reservation operations within a luxury...  ....What We Are Looking ForExperience in hotel revenue management, reservations, or a related... 

AmeriCorps at NCOE

AmeriCorps Neighbor to Neighbor (N2N) Fellow Job at AmeriCorps at NCOE

 ...Member Position Description AmeriCorps Neighbor to Neighbor Fellow Position Description Position Title: Full Time Member, 1700 hr. (11 Months) Stipend Amount: $3,000.00 per month Service Term: October 13, 2026 August 31, 2027 Reports to: Program Planner... 

Methodist Health System

Physical Therapist Job at Methodist Health System

Methodist Health System seeks a compassionate Physical Therapist to provide evidence-based rehabilitative care to patients across our Healthcare & Medical Services department. Responsibilities include evaluating patients, developing and implementing individualized treatment...

Triage Staffing LLC

Travel Ultrasound Tech - $2,594 per week in Ukiah, CA Job at Triage Staffing LLC

 ...Ultrasound Tech Location: Ukiah, CA Agency: Triage Staffing LLC Pay: $2,594 per week Shift...  ...Start Date: 9/28/2026 About the Position Travel Radiology: General/Echo/Vascular Ultrasound Ukiah Location:... 

Minnesota Service Cooperatives

Activities Assistant Job at Minnesota Service Cooperatives

 ...Project Explore Activities AssistantLocation: District Office East, Valley Middle School, Southview Elementary School, sites may vary....  ...Application Deadline: Until filledProject Explore Activities Assistant Qualifications:Demonstrated experience working with people who...