Senior Information System Security Engineer (ISSE) Mantech seeks a motivated, career and customer-oriented Senior Information System Security Engineer (ISSE) to join our team in Doral, FL. Responsibilities include but are not limited to: Conducting comprehensive security assessments, including Federal Information Security Management Act (FISMA) reviews, to identify vulnerabilities and ensure compliance with relevant security standards and regulations Leading and conducting comprehensive security assessments of information systems, applications, and infrastructure, including FISMA reviews Evaluating the effectiveness of security controls and identifying vulnerabilities, analyzing security risks, and providing recommendations for mitigation Developing and maintaining security assessment methodologies and tools, and ensuring compliance with FISMA requirements and guidelines; developing and maintaining FISMA documentation, including System Security Plans (SSP), risk assessments, and Continuous Monitoring Plans Prioritizing vulnerabilities based on risk and impact, and developing and implementing remediation plans; tracking and reporting on vulnerability remediation progress; reviewing and evaluating security architecture designs Providing security guidance and recommendations to Architects and Engineers Minimum Qualifications: BA/BS in field necessary to assume Senior Information System Security Engineer (ISSE) duties or 4 additional years of experience in lieu of a degree 9+ years of experience with 5+ years of relevant Senior Information System Security Engineer (ISSE) experience Strong understanding of security frameworks, standards, and regulations, such as NIST, ISO 27001, and FISMA. Experience conducting vulnerability assessments and penetration testing. Knowledge of security technologies, such as firewalls, intrusion detection/prevention systems, and security information and event management (SIEM) tools. CompTIA Security+, Certified Information Systems Security Professional (CISSP), Certified Information Security Manager (CISM), and DoD 8570.01-M IAM Level II certification. Preferred Qualifications: Master's degree in Computer Science, Computer Engineering, Information Systems, or a closely related field. Experience in current authorization practices, particularly within the DoD. Experience with cloud security assessments. Knowledge of scripting or programming languages. Experience and/or certifications associated with RMF, ICD 503, NIST SP800-53 or DCID 6/3. Windows, Linux, UNIX, Cisco, SQL or Oracle databases, and virtualized systems certification. Red Hat Enterprise License (RHEL) Linux 7, Tenable, and one or more SIEM certifications. Relevant certifications, such as CISSP, CISM, CISA, or CAP. Certified Ethical Hacker (CEH), Offensive Security Certified Professional (OSCP), Certified Cloud Security Professional (CCSP), AWS Certified Security Specialty, Azure Security Engineer Associate, Certified in Risk and Information Systems Control (CRISC), ISO 27001 Lead Auditor. Experience at a DoD Combatant Command (e.g., SOUTHCOM, NORTHCOM, CENTCOM, CYBERCOM, INDOPACOM, EUCOM, AFRICOM, STRATCOM, TRANSCOM, SOCOM, SPACECOM) or a component is desired. Clearance Requirements: Must have an active Secret clearance Physical 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. Must be able to exchange accurate information in these situations.