Information Systems Security Officer; ISSO

Job Title:

Information Systems Security Officer (ISSO)

Job Category:
Information Technology

Time Type:
Full time

Minimum Clearance Required to Start:
Secret

Employee Type:
Regular

Percentage of

Travel Required:

Up to 10%

Type of Travel:
Local

Step into a core mission‑support role where you’ll own the daily security authorization posture for DoD information systems. You’ll work within a well-resourced cybersecurity organization equipped with dedicated engineering, operations, and architecture teams, giving you the support needed to drive meaningful impact.

• Own and manage the security authorization posture of assigned DoD systems
• Partner closely with engineering, operations, and architecture professionals to ensure secure system performance
• Build advanced expertise with modern RMF tools, including eMASS and eMASSer automation
• Maintain mission continuity by developing and managing ATO packages and continuous monitoring programs
• Advance into a senior GRC career pathway with structured opportunities for professional growth

• Develop, update, and maintain System Security Plans (SSPs) for assigned systems
• Manage POA&Ms from identification through remediation and closure
• Compile and submit complete Authorization to Operate (ATO) packages
• Conduct continuous monitoring aligned with program strategy and RMF standards
• Use eMASS to track RMF workflows, manage artifacts, and support GRC governance processes
• Coordinate with ISSEs and Sec Ops teams to validate security control implementations
• Create Security Assessment Plans (SAPs) and support SAR development and coordination
• Draft supply chain risk management plans to support system-level authorization needs
• Partner with the Cybersecurity Architect on RMF strategic planning and lifecycle improvements

• Active Secret or TS clearance
• 3–5 years of RMF/ATO experience in DoD or federal environments
• Hands-on experience with eMASS
• Working knowledge of NIST SP 800‑53 Rev. 5 and DoD RMF processes
• Demonstrated ability to independently author SSPs and manage POA&Ms
• DoD 8140.03M DCWF Basic Tier — CEH
• DoD 8140 Interim Education Options
• Required to travel to Scott Airforce base on a quarterly basis

• DoD 8140.03M DCWF Intermediate Tier — CEH(P), RCCE Level 1, Cloud+, CPTE, FITSP‑A, GCED, GCIH, GCSA, GICSP, GSEC, Pen Test+, or Security+
• Bachelor’s degree in Computer Science, Cybersecurity, Data Science, Information Systems, IT, or Software Engineering
• Experience with eMASSer or other RMF automation tooling
• Exposure to cloud-hosted or hybrid system authorization boundaries
• Familiarity with the DoD RMF Knowledge Service

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the…