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Cybersecurity Engineer
Location
United States
Posted
2 days ago
Salary
$116K - $174K / year
Seniority
Mid Level
Job Description
Role Description
We are hiring a Cybersecurity Engineer to support customer deployments in classified environments, ensuring Istari’s platform operates securely, compliantly, and reliably in real-world mission systems.
This role sits within Customer Success and focuses on hands-on system and infrastructure security—not just documentation or policy.
Depending on your background, you may lean more toward:
- System hardening (Windows/Linux)
- Secure network infrastructure (classified environments)
In this role, YOU will be the difference between a platform that looks secure on paper, and one that actually works inside real classified mission environments.
What You'll Do
-
Deploy and secure Istari’s platform in:
- SIPR, JWICS, and air-gapped environments
-
Implement and validate:
- DISA STIGs
- NIST 800-53 / 800-171 controls
-
Perform hands-on security work, including:
- System hardening (Windows & Linux)
- Vulnerability scanning (ACAS/Nessus)
- STIG validation and remediation
- POA&M management
-
Design, configure, or support secure network architectures, including:
- Segmentation, boundary defense, and routing in classified environments
-
Troubleshoot and resolve:
- Security configuration issues
- Connectivity and compliance blockers
-
Work directly with:
- Customer security teams (ISSO, ISSM, AO, SCA)
- Program and infrastructure teams
-
Provide feedback to engineering on:
- Real-world deployment constraints
- Security gaps and improvements
Qualifications
- 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
- DISA STIGs
-
Experience operating in:
- Classified environments (SIPR, JWICS, SAP)
Requirements
-
Experience Profile A: System Hardening (System Administration)
- 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 Profile B: Secure Infrastructure (Network Engineering)
- 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
Benefits
- $116,000 - $174,000 a year (may be additionally eligible for stipend, one-time incentive, or % differential for clearance)
Job 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
- DISA STIGs
- Experience operating in: Classified environments (SIPR, JWICS, SAP)
- Experience Profile A: System Hardening (System Administration) 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 Profile B: Secure Infrastructure (Network Engineering) 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
Benefits
- $116,000 - $174,000 a year (may be additionally eligible for stipend, one-time incentive, or % differential for clearance)
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