Information Systems Security Officer - ISSO

CACI; United States; On-site; USD 86,000 - 180,000; Full time

Job summary

Join CACI as an Information Systems Security Officer (ISSO) and contribute to mission-critical IC cybersecurity, RMF management, and secure system design. You will collaborate with engineering teams, develop security plans, and deliver technical briefings to stakeholders.

The role emphasizes DoD security practices, NIST guidance, and risk management across enterprise IT and mission systems, with up to 10% travel and TS/SCI clearance requirements.

Qualifications

• Active TS/SCI clearance with Polygraph.
• Bachelor’s degree required.
• 7+ years DoD information systems security or cybersecurity experience.
• DoD 8140 IAT Level II+ certification (e.g., Security+).
• Active IAM Level III certification (e.g., CISSP/CES/CASP).
• Hands-on Linux experience.
• Familiarity with XACTA, ServiceNow, and risk assessment tools.
• Experience designing secure systems, networks, and app architectures.
• Strong knowledge of NIST 800 Series, DoD 8140, DISA STIGs/SRGs, and A&A processes.
• Familiarity with IAVM, IAVA, CIA security principles, MFA, encryption, endpoint security, patch management, IDS.

Responsibilities

• Lead and manage the RMF process.
• Identify RMF artifacts and upload to XACTA and ServiceNow.
• Develop security plans, policies, architectures, designs.
• Configure cybersecurity solutions meeting customer requirements.
• Create and deliver technical presentations to customers.
• Conduct risk analyses using CVEs, plugins, IAVAs, and related data.
• Support security compliance, asset onboarding, and app assessments.
• Travel to CACI or customer locations as needed.
• Promote a safe work environment per EH&S policies.

Skills

TS/SCI clearance

Polygraph

Linux experience

NIST 800 Series

CISA/CISSP/CASP

Threat/risk assessment

RMF/IA/DIACAP

Security presentations

Education

Bachelor’s degree

Tools

XACTA

ServiceNow

Tenable Nessus

ACAS

SCAP

Job description

Job Title: Information Systems Security Officer - ISSOJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Continental US

The Opportunity

Join CACI as an Information Systems Security Officer (ISSO) and help support mission‑critical engineering, operations, and cybersecurity functions for Intelligence Community (IC) customers around the globe. In this role, you will work with a talented team dedicated to implementing future technologies, delivering Tier 2/3 support, and advancing secure, enterprise‑wide capabilities.

If you’re driven by impactful work and want to contribute to something greater, we’d love for you to be part of our team.

Responsibilities

• Lead and manage the full Risk Management Framework (RMF) process.
• Collaborate with system development teams to identify required RMF artifacts and upload them into XACTA and ServiceNow.
• Develop security plans, policies, architectures, and design documentation.
• Configure and implement cybersecurity solutions that meet customer performance requirements and specifications.
• Create and deliver technical presentations to customers and stakeholders.
• Conduct risk analyses using CVEs, plugins, IAVAs, and related security information.
• Support security compliance operations, asset onboarding, and application security assessments.
• Travel to CACI or customer locations as needed.
• Promote and maintain a safe work environment in alignment with CACI EH&S policies.

Qualifications

Required:

• Active TS/SCI clearance with Polygraph.
• Bachelor’s degree.
• Minimum seven years of recent DoD information systems security and/or cybersecurity experience.
• DoD 8140 IAT Level II or higher certification (e.g., CompTIA Security+).
• Active IAM Level III certification (e.g., CISSP, CEH, CASP).
• Hands‑on experience with Linux operating systems.
• Knowledge of XACTA, ServiceNow, and risk assessment tools and methodologies.
• Experience designing secure systems, networks, and application architectures.
• Strong understanding of NIST 800 Series, DoD 8140, DISA STIGs/SRGs, and A&A processes.
• Familiarity with IAVM, IAVAs, CIA security principles, multi‑factor authentication, encryption, endpoint security, patch management, intrusion detection, and defense‑in‑depth.
• Experience with Tenable Nessus, ACAS, and SCAP.
• Ability to complete and review DISA STIGs.
• Strong communication and presentation skills.

Desired:

• Seven or more years of recent experience as an ISSO.
• Seven or more years of experience supporting IT projects that require ATO/ATC.
• Extensive experience with XACTA and/or ServiceNow.
• Seven or more years of hands‑on experience in networking and/or systems engineering.

What You Can Expect

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.

Pay Range

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 flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$85,800 - $180,200

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.