Information Systems Security Engineer with Security Clearance

MANTECH seeks a motivated, career and customer-oriented Senior Information Systems Security Engineer to join our team working in Crane, IN. This is an onsite position. Responsibilities include but are not limited to:

• Systematically integrates security functional requirements into system acquisition, engineering, and development phases.
• Harden application interfaces, data repositories, and cloud environments using systems engineering methodologies.
• Prepare, review, and maintain system security documentation under the Risk Management Framework (RMF), including SSPs, SAPs, SARs, and POA&Ms.
• Support 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.
• Lead technical walkthroughs, security reviews, and participates in intelligence-community or industry-based technical working groups.
• Conduct threat modeling, vulnerability assessments, and analyzes security logs to proactively harden defenses against adversaries.
• Provide technical expertise to contain and mitigate real or potential system security incidents. Design and architect robust end-to-end security solutions for networks, databases, and enterprise systems.
• Incorporate Zero Trust principles, boundary protection, firewalls, and cryptographic controls to safeguard critical warfighting infrastructure.

Minimum Qualifications

• Bachelors degree in Information Security, Systems Engineering or a related technical discipline or, a High School Diploma and 4+ additional years of experience as described above in lieu of degree
• 10+ years of progressive experience in system engineering, information assurance, or cybersecurity
• Must possess a SecurityX (previously known as CASP+) or CISSP certification

Preferred Qualifications

• Master's degree in Computer Science, Computer Engineering, or related technical field Clearance Requirements:
• U.S. Citizenship required and a current or active Secret clearance or ability to obtain an Interim Secret clearance prior to starting.

Physical Requirements

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.