Senior DoD ISSE: Secure Systems Architect & RMF Expert

TRISTAR; Bloomington (IN); On-site; USD 120,000 - 180,000; Full time

Job summary

TRISTAR is seeking an Information System Security Engineer III to provide expert-level cybersecurity engineering, architecture, and RMF support for complex DoD networks. You will lead security design, risk analyses, and IAM/infrastructure hardening across the lifecycle.

Requires DoD IASAE Level III, 10+ years of related experience, and strong leadership in security assessments and architecture reviews. This is a full-time, on-site role in the Bloomington area with DoD compliance responsibilities.

Qualifications

• Must meet DoD 8570/8140 IASAE Level III baseline qualification.
• 10+ years in systems/cybersecurity engineering, or related field.
• Experience with RMF, SSPs, SAPs, SARs and ATO.

Responsibilities

• Serve as senior SME for DoD systems and IASAE.
• Integrate cybersecurity across the system lifecycle.
• Design end-to-end security architectures for enterprise environments.
• Lead RMF activities and documentation preparation.
• Perform threat modeling, vulnerability assessments, and risk analyses.
• Mentor junior cybersecurity engineers and coordinate reviews.

Skills

Senior cybersecurity engineering

RMF expertise

Zero Trust principles

Threat modeling

Security architecture

DoD IA policies

Education

Bachelor's or Master's degree in CS/Cybersecurity/Info Security

Tools

SIEM

Nessus/ACAS

eMASS

HBSS/ESS

Job description

TRISTAR is seeking an Information System Security Engineer III to provide expert-level cybersecurity engineering, architecture, and RMF support for complex DoD networks. You will lead security design, risk analyses, and IAM/infrastructure hardening across the lifecycle.

Requires DoD IASAE Level III, 10+ years of related experience, and strong leadership in security assessments and architecture reviews. This is a full-time, on-site role in the Bloomington area with DoD compliance responsibilities.