Specialist, Information System Security III

Warrant Technologies; Bloomington (IN); On-site; USD 140,000 - 190,000; Full time

Job summary

Warrant Technologies seeks an Information System Security Engineer (ISSE) Level III aligned with DoD IASAE Level III to deliver expert-level security engineering across complex Department of War networks and information systems.

As SME, you’ll integrate security principles throughout the system lifecycle, driving secure design, implementation, and operations with a focus on Zero Trust and cryptographic controls. Secret clearance is required.

Qualifications

• 10+ years of progressive experience in system engineering, information assurance, or cybersecurity.
• IASAE Level III baseline qualifications requirements.
• Security clearance: Secret.
• Bachelor's or master's degree in a related technical discipline; four years of ISSE experience may substitute for a degree.

Responsibilities

• Integrates security requirements into system acquisition, engineering, and development phases.
• Harden interfaces, data repositories, and cloud environments using systems engineering methods.
• Prepare, review, and maintain RMF security documentation (SSPs, SAPs, SARs, POA&Ms).
• Support certification activities for IATT and ATO; act as SME to government stakeholders and engineering teams.
• Lead technical walkthroughs and security reviews with government and industry groups.
• Conduct threat modeling and vulnerability assessments; analyze logs to harden defenses.
• Provide expertise to contain and mitigate real or potential security incidents.
• Design end-to-end security solutions for networks, databases, and enterprise systems.
• Incorporate Zero Trust, boundary protection, firewalls, and cryptographic controls.

Skills

Security engineering

Risk management

Threat modeling

Systems thinking

Education

Bachelor's or Master's in CS / Info Security / Systems Engineering

Tools

RMF

Threat modeling tools

Vulnerability assessment tools

Job description

Description

Warrant Technologies is seeking an Information System Security Engineer (ISSE) Level III—aligned with the DoD 8570/8140 IASAE Level III (Information Assurance System Architecture and Engineering) to provide expert‑level security engineering, design, and architecture support for complex, critical Department of War networks and information systems. Serving as a Subject Matter Expert (SME), this role integrates security principles throughout the entire system lifecycle to protect highly sensitive systems against sophisticated threats.

Responsibilities

Systematically integrates security functional requirements into system acquisition, engineering, and development phases.

Hardens application interfaces, data repositories, and cloud environments using systems engineering methodologies.

Prepares, reviews, and maintains system security documentation under the Risk Management Framework (RMF), including SSPs, SAPs, SARs, and POA&M(s).

Supports system certification activities to secure and maintain an Interim Authority to Test (IATT) and Authority to Operate (ATO). Acts as the primary technical security advisor/SME to Government stakeholders, program managers, and system engineering teams.

Leads technical walkthroughs, security reviews, and participates in intelligence‑community or industry‑based technical working groups.

Conducts threat modeling, vulnerability assessments, and analyzes security logs to proactively harden defenses against adversaries.

Provides technical expertise to contain and mitigate real or potential system security incidents.

Designs and architects robust end‑to‑end security solutions for networks, databases, and enterprise systems.

Incorporates Zero Trust principles, boundary protection, firewalls, and cryptographic controls to safeguard critical warfighting infrastructure.

Requirements

• Minimum of 10+ years of progressive experience in system engineering, information assurance, or cybersecurity
• Bachelor's or master's degree in computer science, Information Security, System Engineering, or a related technical discipline. Four years of direct ISSE experience may be substituted for a degree
• Must meet IASAE Level III baseline qualifications requirements
• Security+, CASP+ or CISSP preferred
• Security Clearance: Secret