DoD Network Security Engineer (TS/SCI) - Onsite Charlottesville

Data Systems Analysts, 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, engineer, and defend enterprise DoD networks in Charlottesville, VA. You will perform hands-on hardening, vulnerability remediation, and boundary defense for Cisco-based infrastructure.

Onsite role requiring experience with ACAS, Nessus, STIGs, and DISA benchmarks, plus collaboration with engineers and mission partners to sustain security authorizations.

Qualifications

• Minimum 4 years of experience supporting network security engineering, secure network operations, boundary defense, or hands-on network administration.
• Working knowledge of Cisco routers, switches, firewalls, Cisco ASA, Cisco Firepower, Cisco Secure Firewall, Cisco ISE, Catalyst, Nexus, ISR, or ASR platforms.
• Experience with ACAS, Nessus, STIG Viewer, SCAP, and vulnerability remediation processes.
• Experience applying, validating, or remediating vulnerability findings and DISA STIGs for network devices.
• Experience developing or maintaining technical configuration standards, ports and protocols lists, network topology diagrams, and device configuration baselines.

Responsibilities

• Configure and review firewall rules, access control lists, ports, protocols, services, VPN connections, network flows, and boundary protection controls.
• Configure, validate, and audit security configurations for Cisco routers, switches, firewalls, and related network infrastructure.
• Support active network security operations, boundary defense engineering, and continuous hardening for enterprise network systems.
• Support incident response activities by analyzing network alerts, logs, firewall events, syslog data, and authentication events.
• Monitor network security posture through syslog alerts, configuration management tools, and packet-level analysis.
• Develop and maintain technical network security documentation including device hardening procedures, network diagrams, and PPS listings.

Skills

Network security engineering

Boundary defense

Vulnerability remediation

Technical documentation

DoD security concepts

Education

BS degree in Engineering or related field

Tools

ACAS

Tenable Nessus

STIG Viewer

SCAP

Splunk

Wireshark

OpenSearch

Job description

Data Systems Analysts, Inc. (DSA) seeks a TS/SCI cleared Network Security Specialist to secure, engineer, and defend enterprise DoD networks in Charlottesville, VA. You will perform hands-on hardening, vulnerability remediation, and boundary defense for Cisco-based infrastructure.

Onsite role requiring experience with ACAS, Nessus, STIGs, and DISA benchmarks, plus collaboration with engineers and mission partners to sustain security authorizations.