Information System Security Engineer Mid

📋 Job Overview

Agile Defense is seeking a skilled Information System Security Engineer (ISSE) to support the FBI under ISSO/ISSE Program Management. The ISSE will provide technical security engineering expertise to help develop, implement, and sustain a methodology for categorizing FBI IT systems based on architecture, complexity, hosting environment, security posture, and mission requirements.

🏢 About Agile Defense

At Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next. Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests.

🎯 The Role

The ISSE will work closely with ISSOs, system owners, architects, and program leadership to maintain a scalable and compliant categorization framework aligned with FBI and federal standards.

✅ Key Responsibilities

• Support design and maintenance of a methodology to categorize FBI IT systems based on architecture and technology stack, security classification level, FIPS-199 impact level, National Security System designation, hosting environment (on-premises, Azure, AWS), CNSS 1253 overlays, data sensitivity and data types, mission/business function, system complexity and integration dependencies.
• Assess system architecture, interfaces, hosting models, and security control implications to help determine appropriate ISSO/ISSE support levels.
• Analyze traditional, hybrid, and cloud-based systems to distinguish technical support requirements.
• Support accurate grouping of systems based on risk, operational impact, engineering effort, and compliance obligations.
• Translate technical system attributes into labor mapping recommendations aligned to ITSSS labor categories and seniority levels.
• Partner with ISSOs and program leadership to ensure categorization decisions are technically sound, repeatable, and well documented.
• Contribute to documentation supporting system assignments, engineering rationale, and support models.
• Support chargeback and cost recovery efforts by aligning technical support effort with system and division-level reporting.
• Assist with automated or semi-automated workflows used for categorization, reporting, and cost assignment.
• Support updates to reporting tools and technical logic when policy, technology, or organizational changes occur.
• Contribute to RMF and system security engineering activities, including security architecture reviews, control implementation analysis, inheritance considerations, boundary analysis, system interconnection analysis, and technical documentation support.
• Review and apply NIST, CNSS, and FBI guidance to ensure methodology remains compliant and current. Support continuous improvement of the categorization framework as new technologies and requirements emerge.

📌 Required Qualifications

• Bachelor’s degree in Information Security, Computer Science, Engineering, Information Systems, or related technical field; equivalent experience may be considered.
• 5+ years of experience in cybersecurity engineering, information assurance engineering, system security engineering, or ISSE support in a federal environment.
• Required Certification(s): One of the following: CISSP, CASP+, CISM, CCSP, CAP, or AWS/Azure security certifications.
• Active Top Secret clearance with SCI eligibility required to start.
• Experience assessing complex systems for security architecture, control implementation, and risk categorization.
• Strong knowledge of FIPS-199, NIST SP 800-37, NIST SP 800-53, CNSS 1253, and RMF.

🛂 Visa & Eligibility

Active Top Secret clearance with SCI eligibility required to start.