Information Systems Security Officer – ISSO

🕒 Yesterday

🌽 Illinois – Remote

🌽 Illinois – Remote

💵 $75.2k - $158.1k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

👮‍♂️ Cybersecurity / Security Engineer

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CACI International Inc

WebsiteLinkedInAll Job Openings

10,000+ employees

Founded 1962

🎖️ Defense

🏛️ Government

🔒 Cybersecurity

🔥 Funding within the last year

💰 $500M Post-IPO Debt on 2026-02

Defense • Government • Cybersecurity

CACI International Inc is a U. S. -based government contractor that provides technologies and professional services to national security, defense, and federal civilian customers. CACI delivers solutions across cyber and digital operations, enterprise IT modernization, electronic warfare, counter-unmanned systems (C-UxS), space and optical communications, agile DevSecOps software development, and mission engineering and logistics support. The company positions itself as a large prime contractor that uses advanced software, analytics, sensing, and hardware to detect and counter evolving threats and modernize government technology architectures.

📋 Description

• Own and manage the security authorization posture of assigned DoD systems • Partner with engineering, operations, and architecture professionals to ensure secure system performance • Develop, update, and maintain System Security Plans (SSPs) • 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 SecOps teams to validate security control implementations • Create Security Assessment Plans (SAPs) and support SAR development and coordination • Draft supply chain risk management plans • Partner with the Cybersecurity Architect on RMF strategic planning and lifecycle improvements • Advance into a senior GRC career pathway with structured opportunities for professional growth

🎯 Requirements

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

🏖️ Benefits

• Flexible time off benefit • Robust learning resources • Healthcare benefits • Wellness benefits • Financial benefits • Retirement benefits • Family support benefits • Continuing education benefits • Time off benefits • Competitive compensation • Learning and development opportunities