Information System Security Engineer (ISSE)

Mantech is seeking a motivated, career and customer-oriented Information System Security Engineer (ISSE) to ensure the confidentiality, integrity, and availability of systems within secure environments.

Key Responsibilities:

• Provide cybersecurity and systems engineering support for Link Encryptor Family (LEF) development, evaluation, and certification efforts.
• Ensure interoperability between LEF implementations by specifying requirements and verifying compliance. Develop new versions of the LEF Cryptographic Interoperability Specification (LEFCIS) and maintain existing versions.
• Provide laboratory engineering support and participate in planning, setup, testing, and reporting of security, functionality, interoperability, and conformance testing of LEF products.

Requirements:

• Fourteen years of experience as an ISSE on programs and contracts of similar scope, type, complexity within the Federal Government.
• Bachelor's degree in computer science, Information Assurance, Information Security System Engineering, or related discipline from an accredited college or university.
• DoD 8570 compliance with IASAE Level 2, CISSP Certification.
• Understanding of encryption technologies and cryptographic principles.
• Knowledge of system certification and accreditation (C&A) processes.
• Experience in performing vulnerability assessments, threat modeling, and risk analysis.
• Knowledge of network devices, including routers, switches, firewalls, and intrusion detection/prevention systems.
• Understanding of networking concepts and protocols, including serial communications (EIA-530, EIA-422/423, EIA-232, EIA-644), TCP/IP, SSL/TLS, and RESTCONF/YANG.
• Knowledge of Operating Systems, including Linux, Windows, and VMware.

Preferred Qualifications:

• Deep understanding of symmetric and asymmetric key management techniques and principles.
• Experience with encryptors, secure communications, and cryptographic product evaluation.
• Familiarity with the agency's Information Assurance Security Requirements Directive (IASRD) and Security Evaluation Requirements Document (SERD) requirements and security methods necessary to meet requirements.
• Experience reviewing and analyzing security documentation required to obtain agency certification.
• Experience with test equipment and analysis tools, including oscilloscopes, logic analyzers, network sniffers, and LAN/WAN testers.
• Experience with installation, configuration, and use of Link Encryptor Family devices, including KIV-7M.
• Knowledge of Tactical Data Links, such as Link-11, Link-16, and Link-22.
• Knowledge of satellite system Ground Operating Equipment encryptors, such as MYK-15A, MYK-16B, MYK-17B, and GRYPHON.
• Knowledge of the Link Encryptor Family Cryptographic Interoperability Specification (LEFCIS).
• Experience in the development and operation of LEFCIS compliant products.
• Experience developing Operational Security Doctrine and policies that define cybersecurity objectives for the protection and use of LEF devices.
• Experience in designing security solutions to mitigate risks and ensure compliance with government regulations (e.g., RMF, FISMA, NIST 800-53).
• Certifications relevant to Linux or specific networking technologies are a plus (e.g., RHCSA, RHCE, or CCNA).

Clearance Requirements:

• Must have a current/active TS/SCI w/ Polygraph.

Physical Requirements:

• 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.