ISSE SME

C5T Corporation • O'Fallon, IL

2d

About The Position

Serve as the program’s top technical authority on security engineering, STIG compliance, and vulnerability management. Define engineering standards and configuration baselines that protect mission-critical systems. Advise the Cybersecurity Architect and leadership on technical security risk and remediation strategy. Drive adoption of automation and modern tooling across the engineering team. Mentor and develop the full ISSE team while shaping the program’s technical security direction.

Requirements

• Active clearance (TS preferred)
• 10+ years of security engineering experience in DoD or federal environments
• Expert proficiency across STIGviewer, SCAP, Tenable SC, Tenable Cloud Security, and CyberArk PAM
• Mastery of DoD STIG processes, NIST SP 800-53r5 technical controls, and vulnerability management frameworks
• Demonstrated experience leading enterprise-level security engineering programs
• Proven track record mentoring and leading security engineering teams
• DoD 8140.03M DCWF Intermediate tier certification — one of: CEH(P), RCCE Level 1, Cloud+, CPTE, FITSP-A, GCED, GCIH, GCSA, GICSP, GSEC, PenTest+, or Security+

Nice To Haves

• DoD 8140.03M DCWF Advanced tier certification — one of: CFR, CISA, CISM, CySA+, GPEN, or GSNA
• Multiple 541 Advanced tier certifications
• Experience with IL4/IL5/IL6 cloud hardening and classified environment engineering
• CyberArk Sentry or Guardian certification

Responsibilities

• Provide SME-level guidance across all security engineering disciplines
• Define and govern security configuration baselines across the system portfolio
• Lead complex SIA efforts for high-risk or enterprise-level changes
• Oversee vulnerability management strategy and drive enterprise remediation programs
• Optimize CyberArk PAM architecture and privileged access governance
• Lead Tenable SC and Tenable Cloud Security program strategy and reporting
• Develop engineering standards, templates, and technical documentation frameworks
• Advise leadership on emerging threats, vulnerabilities, and mitigation strategies
• Mentor and technically develop the full ISSE team

What This Job Offers

• Job Type: Full-time
• Career Level: Senior