ME00619-ISSE 2

Job Summary

Seeking an experienced Information Systems Security Engineer (ISSE) to support mission-critical Department of Defense (DoD) and Intelligence Community (IC) programs

The successful candidate will provide cybersecurity engineering, security architecture, vulnerability management, risk assessment, and security compliance support for complex enterprise and cloud-based information systems

This position is responsible for ensuring systems are designed, implemented, and maintained in accordance with federal cybersecurity policies, Risk Management Framework (RMF) requirements, and DoD Information Assurance (IA) standards while protecting sensitive and classified information

The ideal candidate possesses extensive experience performing security engineering, vulnerability assessments, system security design, and security compliance activities within highly secure environments

Primary Responsibilities

• Perform Information Systems Security Engineering (ISSE) activities supporting the design, implementation, accreditation, and sustainment of secure information systems
• Conduct vulnerability management utilizing enterprise security tools including Tenable Security Center, Nessus, and related vulnerability assessment platforms
• Perform and review technical security assessments of enterprise and cloud-based computing environments to identify vulnerabilities, security weaknesses, and non-compliance with applicable cybersecurity policies and standards
• Analyze security findings and recommend mitigation strategies to reduce operational risk and improve overall security posture
• Perform security planning, security assessments, risk analysis, risk management, and cybersecurity engineering activities throughout the system lifecycle
• Design secure system and network architectures supporting multiple security enclaves with varying classification levels and data protection requirements
• Develop system-level security solutions that satisfy mission, operational, and cybersecurity requirements.
• Support implementation of trusted relationships among interconnected systems, external networks, and enterprise architectures
• Evaluate security controls and recommend technical solutions that align with Risk Management Framework (RMF), NIST, Committee on National Security Systems (CNSS), and DoD cybersecurity requirements
• Support system authorization activities by developing and maintaining cybersecurity documentation, security artifacts, and accreditation packages
• Collaborate with systems engineers, software developers, network engineers, and program management to integrate security throughout the system development lifecycle
• Assist with security testing, validation, continuous monitoring, vulnerability remediation, and compliance reporting
• Maintain technical documentation, security assessments, engineering analyses, and risk management documentation
• Stay current on emerging cybersecurity threats, vulnerabilities, technologies, and federal security guidance to improve organizational security posture

Required Qualifications

• Must have active Top Secret/SCI clearance with NSA Full Scope Polygraph
• Minimum of fourteen (14) years of experience as an Information Systems Security Engineer (ISSE) supporting programs of similar scope, complexity, and technical environment
• Bachelor's degree in Computer Science, Information Assurance, Information Systems Security Engineering, Cybersecurity, or a related technical discipline
• Four (4) additional years of directly related ISSE experience may be substituted in lieu of the degree requirement
• DoD 8570.01-M IASAE Level II certification compliance is required
• Certified Information Systems Security Professional (CISSP) certification is required
• Experience conducting vulnerability management using Tenable Security Center, Nessus, and enterprise vulnerability assessment tools
• Experience performing technical security assessments of cloud, enterprise, and distributed computing environments
• Strong understanding of the Risk Management Framework (RMF), NIST Special Publications, CNSS policies, and DoD cybersecurity requirements
• Experience performing security planning, risk assessments, security control implementation, and risk management
• Experience designing secure enterprise architectures supporting multiple security domains and classification levels
• Knowledge of network security, system hardening, access control, identity management, encryption, and secure communications
• Experience developing security recommendations and mitigation strategies for complex information systems
• Strong analytical, troubleshooting, documentation, and communication skills
• Ability to collaborate effectively with multidisciplinary engineering and cybersecurity teams

Desired Qualifications

• Experience supporting Authorization to Operate (ATO) packages and security authorization activities
• Experience with Security Technical Implementation Guides (STIGs), Security Requirements Guides (SRGs), and vulnerability remediation
• Familiarity with cloud security architectures supporting AWS, Azure, or hybrid cloud environments
• Experience supporting continuous monitoring programs and enterprise cybersecurity operations
• Knowledge of Zero Trust Architecture (ZTA), Identity and Access Management (IAM), and secure cloud technologies
• Experience working within Agile, DevSecOps, or secure software development environments
• Familiarity with Security Information and Event Management (SIEM) platforms such as Splunk or Microsoft Sentinel
• Experience supporting Department of Defense or Intelligence Community cybersecurity programs

• Exempt hourly position.
• 11 paid holidays, minimum of 3 weeks PTO, company sponsored group medical plan, company paid dental, vision, life insurance, and STD/LTD plans.
• Salary is dependent upon the candidate’s experience and qualifications.

• About Company ---

Additional information

Momentum Engineering, Inc. fosters an employee-centric culture. Our strength lies in our people. With a high percentage of employees holding advanced degrees in engineering, computer science, and related disciplines, we bring deep technical expertise to every mission.

Our team includes professionals with security clearances and full-scope polygraphs, ensuring trusted, secure support for the most sensitive national security initiatives. Additionally, our workforce is equipped with industry-leading certifications, demonstrating a commitment to continuous learning and excellence.

Most importantly, our exceptional employee retention rate reflects a culture of professional growth, mission focus, and dedication—ensuring long-term stability and expertise for our customers’ critical needs.