Information System Security Engineer (ISEE)

Decision Technologies; Virginia Beach (VA); On-site; USD 120,000 - 180,000; Full time

Job summary

Decision Technologies, Inc. seeks an Information System Security Engineer to join our Virginia Beach team. You will provide technical cybersecurity engineering in support of USMC ISEA programs, interpreting and validating security requirements across the system lifecycle.

The role involves hands-on security design, RMF and NIST SP 800-53 compliance, and close collaboration with system engineers, developers, administrators, and the ISSO to maintain the system security posture.

Qualifications

• U.S. Citizen capable of obtaining DoD Secret clearance.
• Bachelor's degree in Cybersecurity, Computer Engineering, Information Systems, or related field.
• DoD 8570/8140 IAT or IASAE II certification (e.g., CASP+, CSSLP, CISSP).
• Experience implementing and validating NIST SP 800-53 security controls.
• Familiarity with RMF tasks, STIGs, and vulnerability remediation.

Responsibilities

• Lead cybersecurity engineering for USMC systems in RMF context.
• Translate security requirements into technical designs.
• Engineer, implement, and validate security controls per RMF and NIST.
• Develop security architecture artifacts and diagrams.
• Support secure configurations, baselines, and hardening.
• Review designs and changes for cyber compliance.
• Assist with vulnerability scanning and remediation planning.
• Collaborate with ISSO and government customer to maintain security posture.

Skills

Information security

RMF engineering

NIST SP 800-53

Network security

Technical communication

Education

Bachelor's degree in Cybersecurity or related field

Tools

eMASS

DADMS

DON security tools

ACAS HBSS/ESS

Job description

Join a dynamic company, Decision Technologies, Inc., that stands out in the field of technical support services and engineering consultancy. With our extensive experience in developing RF Systems and Missile Sensors, production transition, quality and reliability assessment, test and evaluation, and logistics support, we are uniquely positioned to meet the needs of our customers. Be part of our experienced team that provides exceptional support and leadership in our core competencies.

Decision Technologies seeks a qualified Information System Security Engineer to join our team in Virginia Beach, VA.

Position Description

The Information System Security Engineer (ISSE) provides technical cybersecurity engineering expertise in support of a Government In-Service Engineering Activity (ISEA) responsible for United States Marine Corps (USMC) systems. The ISSE ensures cybersecurity requirements are properly interpreted, engineered, implemented, and validated across the system lifecycle. This role involves hands‑on technical work, secure architecture design, and close coordination with system engineers, developers, administrators, and the cybersecurity team.

MUST HAVE Secret clearance

Responsibilities and Duties

• Serve as the lead cybersecurity engineer for assigned systems, ensuring alignment with DoW, DoN, and USMC cybersecurity standards.
• Translate security requirements into technical solutions and system‑level designs.
• Engineer, implement, and validate security controls in accordance with the Risk Management Framework (RMF) and NIST SP 800‑53.
• Develop and maintain security architecture artifacts, including system diagrams, interface descriptions, and security‑in‑design documentation.
• Support the integration of secure configurations, hardening guides, and baseline security settings.
• Conduct technical reviews of system designs, software changes, and engineering modifications to ensure cybersecurity compliance.
• Assist with vulnerability scanning, analysis, and remediation planning; guide engineering teams on fix strategies.
• Evaluate new technologies, software updates, and system changes for cybersecurity impacts.
• Support development of cybersecurity documentation such as SCCM baselines, implementation plans, and engineering change packages.
• Participate in system testing events, including security‑focused testing and validation.
• Provide technical input for RMF packages, including control evidence, diagrams, and implementation details.
• Collaborate closely with the ISSO, system administrators, and the government ISEA customer to ensure system security posture is maintained.

Required Qualifications and Skills

• U.S. Citizen with the ability to obtain and maintain a DoD Secret clearance (current clearance preferred).
• Bachelor's degree in Cybersecurity, Computer Engineering, Information Systems, or related technical field; equivalent hands‑on experience considered.
• DoD 8570/8140 IAT or IASAE II certification (e.g., CASP+, CSSLP, CISSP).
• Technical experience implementing, engineering, and validating NIST SP 800‑53 security controls.
• Familiarity with ACAS, HBSS/ESS, secure configurations (STIGs), and vulnerability remediation.
• Experience with RMF engineering tasks, especially security control implementation and assessment readiness.
• Strong understanding of network security, system architecture, secure coding principles, and system hardening.
• Ability to communicate complex technical concepts effectively to both technical and non‑technical stakeholders.

DESIRED QUALIFICATIONS AND SKILLS

• Experience engineering cybersecurity solutions for USMC systems or other DoN platforms.
• Experience working within or supporting a Government ISEA.
• Proficiency with eMASS for control evidence and security engineering documentation uploads.
• Familiarity with DON Application and Database Management System (DADMS), SNI, and DoN enterprise security tools.

Travel Requirements

• <5%

Compensation

Compensation at Decision Technologies, Inc. is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience; as well as contract‑specific affordability and organizational requirements.

Employee Benefits

• Competitive Paid Time Off
• Comprehensive Medical, Dental and Vision Insurance
• Employee Assistance Programs
• Flexible Spending Accounts (Medical, Dependent Care & Commuter)
• Company paid Short Term, Long Term, Life and AD&D Insurance
• 401(k) match
• Tuition Reimbursement
• Paid Certifications

Decision Technologies, Inc. is an equal employment opportunity that provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, or any other characteristic protected by federal, state, or local laws.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.