TS/SCI Cleared Cisco Network Security Specialist

DSA Inc.; Charlottesville (VA); On-site; USD 120,000 - 160,000; Full time

Job summary

Data Systems Analysts, Inc. (DSA) seeks a TS/SCI cleared Network Security Specialist to secure and defend DoD enterprise networks in Charlottesville, VA. You will configure firewall rules, audit Cisco devices, and perform vulnerability remediation while coordinating with engineers and security staff.

The role requires hands‑on experience with Cisco infrastructure, ACAS/Nessus/SCAP tools, and DISA STIG compliance, with a focus on boundary defense and secure operations in a DoD environment.

Qualifications

• Minimum 4 years of experience in network security engineering or related field.
• Experience with Cisco network infrastructure and security devices.
• Experience applying DISA STIGs and DoD security controls.

Responsibilities

• Configure firewall rules, ACLs, ports, VPNs, and boundary controls.
• Audit security configurations for Cisco devices and related infrastructure.
• Support incident response and vulnerability remediation.
• Develop network security documentation and diagrams.
• Ensure compliance with DISA STIGs and SCAP benchmarks.

Skills

Network security

Firewall management

Incident response

Network hardening

Documentation

Team coordination

Vulnerability remediation

Education

BS degree in Engineering, Computer Science, or related field

DoD 8140 (8570) IAT Level II Certification

CCNA certification

TS/SCI Clearance

Tools

ACAS

Tenable Nessus

STIG Viewer

SCAP

Cisco IOS/Nexus/ASA

Job description

Data Systems Analysts, Inc. (DSA) seeks a TS/SCI cleared Network Security Specialist to secure and defend DoD enterprise networks in Charlottesville, VA. You will configure firewall rules, audit Cisco devices, and perform vulnerability remediation while coordinating with engineers and security staff.

The role requires hands‑on experience with Cisco infrastructure, ACAS/Nessus/SCAP tools, and DISA STIG compliance, with a focus on boundary defense and secure operations in a DoD environment.