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Istari Digital logo
Istari Digital

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Senior Cybersecurity Engineer

Security EngineerSecurity EngineerOtherRemoteSeniorTeam 51-200

Location

United States

Posted

72 days ago

Salary

$116K - $174K / year

Seniority

Senior

Job Description

Senior Cybersecurity Engineer

Istari Digital

Role Description We are hiring an Information System Security Engineer (ISSE) to serve as the technical implementer of cybersecurity within our platform. This is not a policy or compliance role. You will take security requirements (RMF, NIST, customer constraints) and directly apply them to system architecture, infrastructure, and the software development lifecycle. - Implement NIST 800-53 / 800-171 security controls directly into system design and platform architecture - Lead system hardening and secure configuration across platform components - Embed security into the engineering workflow (DevSecOps) - Perform: - System Patching - STIG implementation and validation - Vulnerability scanning (ACAS/Nessus) - POA&M management and remediation tracking - Partner with engineering teams to: - Secure APIs, services, and data pipelines - Enforce least privilege, identity, and access controls - Support deployment into SIPR / JWICS / SAP environments - Identify and remediate security gaps before they reach customer environments Qualifications - Active TS clearance with SCI eligibility - DoD 8570/8140 certification (Security+ minimum; CISSP/CASP+/CISM preferred) - 5+ years in cybersecurity with hands-on implementation experience - Direct experience with: - NIST 800-53 / 800-171 - DISA STIGs - ACAS/Nessus - Background in: - Systems Administration, Network Engineering, or SOC → transitioned into security - Experience working in classified environments (SIPR, JWICS, SAP) Requirements - You’ve actually hardened systems—not just documented controls - You can move between: - Low-level system configuration - High-level security architecture decisions - You are comfortable doing manual, in-the-weeds work when needed to hit deadlines - Track record of stability (2+ years per role preferred) - Comfortable in a startup environment - Willing to own problems end-to-end, not just your lane 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
  • DoD 8570/8140 certification (Security+ minimum; CISSP/CASP+/CISM preferred)
  • 5+ years in cybersecurity with hands-on implementation experience
  • Direct experience with: NIST 800-53 / 800-171
  • DISA STIGs
  • ACAS/Nessus
  • Background in: Systems Administration, Network Engineering, or SOC → transitioned into security
  • Experience working in classified environments (SIPR, JWICS, SAP)
  • You’ve actually hardened systems—not just documented controls
  • You can move between: Low-level system configuration
  • High-level security architecture decisions
  • You are comfortable doing manual, in-the-weeds work when needed to hit deadlines
  • Track record of stability (2+ years per role preferred)
  • Comfortable in a startup environment
  • Willing to own problems end-to-end, not just your lane

Benefits

  • $116,000 - $174,000 a year (may be additionally eligible for stipend, one-time incentive, or % differential for clearance)

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