Information System Security Engineer III

Summary

Huntsville, Alabama

Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional development is embedded in your employer’s core culture? If so, Chenega Military, Intelligence & Operations Support (MIOS) could be the place for you! Join our team of professionals who support large-scale government operations by leveraging cutting‑edge technology and take your career to the next level!

Chronos Operations (CO) is a wholly‑owned subsidiary of Chenega Corporation, an Alaska Native Corporation based in Anchorage, AK. Belonging to the Military, Intelligence, and Operations Support (MIOS) Strategic Business Unit (SBU), Chronos has a culture rooted in integrity, respect, and exceptional performance. Chronos is headquartered in Colorado Springs, CO, and provides mission‑critical services in Advanced Analytics & AI, Software Engineering, Cybersecurity, Information Technology, and Intelligence.

The Information System Security Engineer III acts as a mid‑level technical lead for RMF activities, developing and maintaining security documentation, coordinating with AOs/AODRs, and ensuring compliance with cybersecurity regulations.

• Act as mid‑level technical lead for RMF activities, developing and maintaining security documentation, coordinating with AOs/AODRs, and ensuring compliance with cybersecurity policies and regulatory frameworks.
• Assist senior technical lead with managing risk, securing IT systems, and implementing security controls to protect sensitive data.
• Assist in the development and maintenance of the Risk Management Framework (RMF) documentation and reports to achieve and maintain compliance with cybersecurity regulations and optimize current processes to streamline the approval process across the AMC Enterprise Mission Assurance Support System (eMASS) Portfolio for HQ and Enterprise records.
• Implement a Continuous Monitoring Strategy with automation to keep packages current.
• Work with leadership, auditors, and IT teams to maintain security and respond to threats.
• Work in all steps of the RMF process with system owners, ISSO, and ISSMs, and validate adequate security controls are in place to enable sound risk‑management decisions by the AO.
• Ensure security requirements are addressed in all phases of the development of the lifecycle (SDLC).
• Participate in network design reviews and security testing for the customer’s networks.
• Provide A&A and RMF guidance to system owners to ensure accreditation success.
• Deep understanding of cybersecurity frameworks, documentation, and technical validation processes, working closely with stakeholders and control assessors to ensure security and compliance.
• Plan, implement, upgrade, or monitor security measures for the protection of computer networks and information.
• Track timely and high‑quality completion of process tasks and milestones and report on the status of key milestones to performers and senior stakeholders.
• Oversee the cybersecurity lifecycle from inception to completion.
• Develop, review, and update documentation to ensure compliance with RMF and Continuous Monitoring requirements.
• Maintain and update security documentation (SSPs, POA&Ms, etc.).
• Assist with the preparation of test plans and conduct security control testing IAW with NIST SP800-53.
• Other duties as assigned.

• Bachelor’s degree in science, Technology, Engineering, Mathematics, IT, or business‑related programs.
• 6+ years of experience in Information System Security practices and applying the RMF to complex IT systems.
• 3+ years’ experience supporting DoD or federal programs is highly desirable.
• Experience with RMF (NIST 800‑53), ATO packages, POA&M development, and system categorization is required.
• Baseline and Full Computing Environment Certifications for IAT‑II IAW DoD 8570.01‑M (Security+ certification) desired.
• Cybersecurity certifications like CISSP, CISA, or CISM are required.
• Must have an active Secret clearance with the ability to obtain TS with SCI eligibility.

• Experience with eMASS is critical.
• Deep understanding…