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Network Security Engineer Security Clearance

Job in Fort Belvoir, Fairfax County, Virginia, 22060, USA
Listing for: TEKsystems c/o Allegis Group
Full Time position
Listed on 2026-01-22
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Security
Salary/Wage Range or Industry Benchmark: 60 - 70 USD Hourly USD 60.00 70.00 HOUR
Job Description & How to Apply Below
Position: Network Security Engineer with Security Clearance
Must have: CCNP certification, Security+, Active Top Secret Clearance (TS/SCI preferred)
Pay Range: $60-70/hr As a Network Security Engineer, the work you’ll do will be impactful to the mission of US Army Intelligence and Security Command (INSCOM ). You will play a crucial role in supporting the INSCOM mission.

- Install, configure, and maintain customer network infrastructure and security stack as part of a global enterprise.
- Troubleshoot networking and security protocols/technologies, including switching, routing, and security (e.g., Layer 4-7, firewall, Site-to-Site VPN, DMVPN, etc) to resolve problems on the customer information system.
- Analyze, plan, and implement access control lists (ACL), firewall policies, and other logical security controls in a multi-vendor security stack.
- Provide expert-level (Tier
3) network security engineering support for INSCOM activities in the National Capital Area.

- Collaborate with teams of various technical discipline to solve enterprise IT problems from a holistic perspective.
- Configure load balancing and authentication policies on F5 BIG-IP to support web application hosting. WHAT YOU’LL NEED TO SUCCEED:

- Education:

Bachelor's Degree with 12 years of experience or Master's Degree with 10 years of experience Required Skillset:
- Excellent attention to detail
- Excellent communications skills and ability to interact with both clients and teammates

- Experience with configuring, integrating, and troubleshooting security appliances in a multi-vendor federal enterprise environment

- Experience with the behavior of routing protocols in Next Generation Firewalls

- Experience with Network Automation tools, scripting languages, or Infrastructure as Code tools (e.g. Net Brain, Python, Power Shell, APIs, Terraform, Ansible)
- Intermediate knowledge of F5 BIG-IP deployment and configuration with Local Traffic Manager and Application Security Manager
- Hardening network devices in accordance with STIGS/NIST and industry best practices

- Experience with packet analysis tools such as TCPDump and Wireshark
- Experience working in a large SDLC environment Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms.  If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)
· This position requires an active DoD Clearance (Secret, Top Secret, Top Secret/SCI) or the ability to be obtain an (Interim Secret, Interim Top Secret)
· Because an active or interim DoD clearance is required, U.S. Citizenship is required
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