Information Systems Security Engineer

MANTECH; Crane (IN); On-site; USD 120,000 - 150,000; Full time

Job summary

MANTECH seeks a Senior Information Systems Security Engineer to join our on-site team in Crane, IN. The role requires a U.S. Citizenship and an active Secret clearance with the ability to obtain Interim Secret as needed.

The selected candidate will integrate security into system lifecycles, harden interfaces and cloud environments, and prepare RMF documentation (SSPs, SAPs, SARs, POA&Ms). You will lead security reviews and advise government stakeholders across programs.

Qualifications

• Bachelor's degree or equivalent experience in a technical discipline as described.
• 10+ years of progressive experience in system engineering, information assurance, or cybersecurity.
• SecurityX (formerly CASP+) or CISSP certification required.

Responsibilities

• Integrate security functional requirements into system acquisition, engineering, and development phases.
• Harden application interfaces, data repositories, and cloud environments.
• Prepare, review, and maintain RMF security documentation (SSPs, SAPs, SARs, POA&Ms).
• Support certification activities to secure IATT and ATO.
• Act as the primary technical security advisor to government stakeholders, program managers, and system engineering teams.
• Lead security walkthroughs and reviews with government/industry groups.
• Conduct threat modeling, vulnerability assessments, and analyze security logs.
• Design end-to-end security solutions for networks, databases, and enterprise systems.
• Incorporate Zero Trust, boundary protection, firewalls, and cryptographic controls.

Skills

Security engineering

Threat modeling

RMF

Zero Trust

Vulnerability assessment

Security incident response

Security logs analysis

Network security

Cryptography

Education

Bachelor's degree in Information Security

Bachelor's degree in Systems Engineering

High School Diploma with 4+ years experience

Job description

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.