Sev1Tech is looking for an experienced Information Systems Security Officer (ISSO) who can prepare, submit, and monitor accreditation packages through the Risk Management Framework (RMF) process ensuring receipt of Interim Authority to Test (IATT) or Authority to Operate (ATO) in support of the Naval Supply Systems Command (NAVSUP) Ordnance Information System (OIS) program. The ISSO will maintain current operating cybersecurity environment within AWS GovCloud operating environment.
The ISSO will apply their knowledge of DOD Cybersecurity processes and best practices used to secure technical solutions, including applications, systems, architectures, and infrastructures.
This critical role will also be responsible for:
- Meeting and maintaining DOD RMF CYBER certification and accreditation requirements, including researching, testing and providing technical information for obtaining required system accreditation.
- Developing Security Requirements Traceability Matrix (STRM), aligning security requirements with the individual components of a system.
- Performing checks of systems and applications for Information Assurance vulnerabilities using approved automated IA tools (ACAS, VRAM, SCAP-compliant scanners, DISA STIG Viewer, etc.), custom scripts and manual processes (i.e., Security Technical Implementation Guides [STIGS]).
- Monitoring OIS security posture, documenting raw findings in a quick look report, for customer notification. Create and maintain system Plan of Action and Milestones (POA&Ms) of open vulnerabilities and applied mitigations utilizing Department of Defense Enterprise Mission Assurance Support Service (eMASS) tool.
- Supporting the development and documentation of risk assessment results and recommendations using identified threats, applicable vulnerabilities, and likelihood of occurrence within context of risk tolerances
- Monitor all database and application software used in OIS for version change control and nearing/exceeding last date allowed in the Department of Navy Application Database Management System (DADMS).
- Coordinating/interfacing with OIS Technical Team, Defense Information Systems Agency (DISA), IA Staff, and Fleet Cyber Command to document, review, revise, and submit changes related to Ports, Protocols, and Services Management (PPSM), Access Control Lists (ACLs), and Whitelists. This support includes preparing and submitting the registration forms for new requirements.
- Supporting DOD IT Portfolio Repository–DON (DITPR-DON) to support the annual review.
- Providing recommendations for corrective actions and mitigation strategies.
- Producing security risk assessment briefs and reports for delivery to stakeholders and senior management.
- Support the DevSecOps team in implementing Cyber Security requirements to achieve and maintain accreditation and authority to operate within specified timelines.
- Interpret OS, web server, and database scans to facilitate resolving security findings with the DevSecOps team and external teams
- Conducting security monitoring through the use of VRAM (Vulnerability Remediation Asset Manager), and applying mitigation techniques to reduce and remediate vulnerabilities
- Coordinating / troubleshooting with afloat platforms to assist in identification and remediation of cybersecurity vulnerabilities within the Program of Record (POR) area of responsibility
- Ensure systems are scanned, patched, and compliant with DoD policy
- Troubleshoot Windows and RHEL security policies
- Support with configurations including CloudWatch logs, registering systems, reporting and manage findings
- Assess systems to determine applicable IA controls based on design, architecture, and data
- Attend risk management and system meetings to provide status updates and take action items
- Other duties as required
- Must have DOD Secret level clearance to start (T3 background investigation)
- Certification Requirement: Directive 8570.1/8140 – IAM-1: Security+
- Bachelor’s degree with a minimum of 6 years of relevant experience.
- Experience performing risk assessments and audits.
- Experience using DoD approved tools (ACAS, SCAP-compliant scanners, eMASS, etc.).
- Knowledge of the overall Risk Management Framework and NIST compliance as a security professional.
- Experience presenting to clients or management to present technical and non-technical information to allow key personnel to make informed decisions.
- Experience successfully advising stakeholders through the ATO process.
- Familiarity with information security documents, government orders, notices, and guidelines.
- Experience documenting and maintaining systems running in AWS GovCloud (DoD preferred)
- Ability to work independently to create and update Security Plans, Contingency Plans, and other security documents
- Solid understanding in DoD Cyber Security policies and requirements
- Bachelor’s degree in Engineering, IT, Computer Science, or related field or equivalent
- 10 years’ experience in ISSO capacity
- Experience supporting DoD (Navy preferred) enterprise application in the AWS GovCloud (up to IL 6) in a security capacity
- CISSP or equivalent certification
- AWS Certified Security certification
Skills Required
- Active DoD Secret clearance with a T3 background investigation before starting
- Security+ certification meeting DoD Directive 8570.1/8140 IAM-1 requirements
- Bachelor's degree and at least 6 years of relevant experience
- Experience performing risk assessments and audits
- Experience using DoD-approved cybersecurity tools, including ACAS, SCAP-compliant scanners, and eMASS
- Knowledge of the Risk Management Framework and NIST compliance
- Experience presenting technical and non-technical information to clients or management
- Experience advising stakeholders through the Authority to Operate process
- Familiarity with information security documents, government orders, notices, and guidelines
- Experience documenting and maintaining systems in AWS GovCloud
- Ability to independently create and update Security Plans, Contingency Plans, and related security documents
- Strong understanding of DoD cybersecurity policies and requirements
- Bachelor's degree in Engineering, Information Technology, Computer Science, or a related field, or equivalent
- 10 years of experience in an ISSO capacity
- Experience supporting DoD, preferably Navy, enterprise applications in AWS GovCloud up to Impact Level 6
- CISSP or equivalent certification
- AWS Certified Security certification
Entarian Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Entarian and has not been reviewed or approved by Entarian.
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Healthcare Strength — Health coverage options including medical, dental, and vision are presented alongside HSA/FSA accounts and a wellness program, suggesting comprehensive medical support. Feedback suggests the breadth of insurance and wellness offerings is a notable advantage.
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Retirement Support — A 401(k) plan with company match and immediate vesting is highlighted, indicating strong retirement benefits with accessible employer contributions. Feedback suggests immediate vesting enhances perceived value for employees.
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Leave & Time Off Breadth — Paid Time Off, 11 paid federal holidays, and parental leave are noted, pointing to a generous time-off structure. Feedback suggests these policies support work-life balance.
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Entarian delivers science, engineering, and technology solutions for defense and federal civilian missions. The company integrates space systems, data modeling and analysis, cybersecurity, and secure enterprise and mission environments, enabling actionable insight from the enterprise to the tactical edge. Its work supports weather data, satellite operations, search and rescue, network infrastructure, and other mission-critical government programs for national security and public safety.









