Senior Information Security Officer (ISSO) - RMF & ATO

Base-2 Solutions, LLC; Elkridge (MD); On-site; USD 120,000 - 150,000; Full time

Job summary

Base-2 Solutions is seeking an Information System Security Officer to work with application leads, system administrators, database administrators, developers, and testers to ensure assigned systems are security compliant and achieve or maintain Authority to Operate (ATO).

You will manage RMF processes, update Xacta artifacts (SSPs, SCTMs, STPs, POAMs), load STIG checklists and ACAS scans, mitigate findings, and support ST&E and ISSMs in security assessments.

Qualifications

• Bachelor’s degree in computer science, software engineering, or a field applicable to the position required.
• 9 or more years of relevant experience required with a Bachelor’s degree.
• Demonstrated experience in developing, implementing, and enforcing security policies, standards, and procedures to ensure regulatory compliance and protect organizational information assets.
• Proven track record in conducting risk assessments and identifying vulnerabilities in systems, networks, and applications.
• Experience in developing and overseeing implementation of mitigation strategies to reduce security risks.
• Strong background in monitoring systems and networks for security breaches and suspicious activity.
• Successful history of responding to security incidents, investigating root causes, and implementing corrective actions.

Responsibilities

• Work with application leads, system administrators, database administrators, developers, and testers to ensure assigned systems are security compliant and achieve or maintain ATO.
• Follow the RMF process for full test, partial test, continuous monitoring (CONMON), and no test scenarios.
• Update Xacta documentation including SSPs, SCTM, STPs, and POAMs.
• Load artifacts such as STIG checklists and ACAS scans.
• Help implement STIG checklists and mitigate scan findings.
• Answer questions to ensure systems are developed with security compliance built in.
• Support security assessment events and respond to all questions from the PAT team, ISSMs, and SCAs.

Skills

Risk assessment

Security policies

Regulatory compliance

Vulnerability management

Network security monitoring

Incident response

RMF process

Education

Bachelor's degree in CS/SE

Education equivalency options

Tools

Xacta

STIG checklists

ACAS scans

Job description

Base-2 Solutions is seeking an Information System Security Officer to work with application leads, system administrators, database administrators, developers, and testers to ensure assigned systems are security compliant and achieve or maintain Authority to Operate (ATO).

You will manage RMF processes, update Xacta artifacts (SSPs, SCTMs, STPs, POAMs), load STIG checklists and ACAS scans, mitigate findings, and support ST&E and ISSMs in security assessments.