Deploy and secure Istari’s platform in SIPR, JWICS, and air-gapped environments
Implement and validate DISA STIGs
Implement and validate NIST 800-53 / 800-171 controls
Perform hands-on security work, including System hardening (Windows & Linux)
Conduct Vulnerability scanning (ACAS/Nessus)
Perform STIG validation and remediation
Manage POA&M
Design, configure, or support secure network architectures, including segmentation, boundary defense, and routing in classified environments
Troubleshoot and resolve security configuration issues
Address connectivity and compliance blockers
Work directly with customer security teams (ISSO, ISSM, AO, SCA)
Collaborate with program and infrastructure teams
Provide feedback to engineering on real-world deployment constraints and security improvements

Requirements

Active TS clearance with SCI eligibility
Security+ (required) — CISSP, CISM, or CASP+ preferred
4+ years of hands-on experience in cybersecurity, system administration, or network engineering
Direct experience with NIST 800-53 / 800-171
Direct experience with DISA STIGs
Experience operating in Classified environments (SIPR, JWICS, SAP)
Strong experience securing Windows and/or Linux systems
Hands-on System Patching, STIG implementation and validation
Experience running scans, remediating findings, and managing POA&Ms
Experience designing or supporting Secure network architectures in classified environments
Knowledge of Network segmentation, boundary defense, and secure connectivity
Familiarity with STIGs for network devices and infrastructure

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

cybersecuritysystem administrationnetwork engineeringsystem hardeningvulnerability scanningSTIG validationsystem patchingnetwork segmentationboundary defensesecure connectivity

Soft Skills

collaborationtroubleshootingproblem-solvingcommunicationfeedback provision

Certifications

Security+CISSPCISMCASP+