ManTech seeks a motivated, career and customer-oriented Information Systems Security Engineer (ISSE) to join our team in Ft. Meade, Maryland. This position is part of a team that provides engineering and Information Technology services to provision, manage, sustain, innovate, modernize, refresh, reengineer, and secure the Nuclear Command and Control (NC2) and Non-NC2 cryptographic production infrastructure.Responsibilities include, but are not limited to:Responsible for performing, reviewing technical security assessments, validating and verifying system security requirementsResponsible for designing, developing, implementing and/or integrating Information Assurance and security system componentsResponsible for enforcing the design and implementation of trusted relations among external systems and architectures in addition to supporting the building of security architecturesResponsible for contributing to the security planning, assessment, risk analysis, risk management, certification, and awareness activitiesResponsible for reviewing certification and accreditation (C&A) documents and will be knowledgeable of IA policy, procedures, and workforce structure in designing, developing, and implementing secure networking, computing, and enclave environmentsBasic Qualifications:Bachelor’s degree and fourteen (14) years of experience or eighteen (18) years of total experienceCISSP Certification is required (DoD 8570.01-M compliance with IASAE Level 2)Preferred Qualifications:Experience supporting security authorization activities in compliance with customer Information System Certification and Accreditation Process (NISCAP) and DoD Risk Management Framework (RMF), the NIST Risk Management Framework (RMF) process, and customer business processes for security engineeringExperience as the primary security engineering or security officer representativeExperience in security planning, assessment, risk analysis, and risk managementExperience in determining system-level solutions resolving security requirements.Security Clearance Requirements:Current and active TS/SCI with polygraphPhysical Requirements:Must be able to remain in a stationary position 50%.Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations.