Today
Top Secret/SCI
Unspecified
None
IT - Security
Remote/Hybrid• (Off-Site/Hybrid)
Information System Security Engineer
Job Category: Information Technology
Time Type: Full time
Minimum Clearance Required to Start: TS/SCI
Employee Type: Regular
Percentage of Travel Required: None
Type of Travel: None
* * *
The Opportunity:
Join a forward-leaning cybersecurity team focused on securing cutting-edge cloud-based platforms. Serve as a key security engineer in agile security scrums, collaborating with developers and system architects. Take ownership of continuous monitoring efforts and the implementation of NIST 800-53 security controls. Play a critical role in system accreditation processes using tools like XACTA and ACAS. Partner directly with customers to ensure compliance, transparency, and strong security postures across environments.
Responsibilities:
• Serve as the Information System Security Engineer (ISSE) supporting cloud-based and hybrid systems.
• Participate in security-focused scrum teams to integrate security into the development lifecycle.
• Conduct updates and system security assessments using XACTA.
• Perform automated vulnerability scans and analysis using tools like ACAS.
• Develop, update, and maintain all required system security documentation (SSPs, POA&Ms, etc.).
• Ensure compliance with multiple regimes, including NIST SP 800-53 and Risk Management Framework (RMF) requirements.
• Collaborate with internal and external stakeholders to resolve security concerns and improve controls.
• Lead and support continuous monitoring activities for operational systems.
• Design, implement, and maintain technical and procedural security controls.
• Contribute to Authority to Operate (ATO) packages and security reviews.
Qualifications:
Required:
• U.S. Citizenship required with an active TS/SCI clearance.
• Bachelor's degree in Cybersecurity, Information Systems, Computer Science, or related field.
• 5+ years of experience as a Security Engineer or ISSE, preferably in a cloud environment.
• Working knowledge of XACTA, ACAS, and NIST SP 800-53.
• Experience with RMF and federal cybersecurity compliance processes.
• Familiarity with continuous monitoring strategies and implementation.
• Proficiency in developing and maintaining security documentation.
• Strong communication and collaboration skills with both technical and non-technical stakeholders.
Desired:
• Experience with AWS or Azure Government cloud environments.
• CISSP, CAP, or other relevant cybersecurity certifications.
• Understanding of Agile methodologies and DevSecOps practices.
• Familiarity with other security tools (e.g., Nessus, Splunk, HBSS).
• Previous experience in direct customer-facing security roles.
-
________________________________________________________________________________________
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.
Your potential is limitless. So is ours.
Learn more about CACI here.
________________________________________________________________________________________
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. Learn more here .
Since this position can be worked in more than one location, the range shown is the national average for the position.
The proposed salary range for this position is:
$75,200-$158,100
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.
Job Category: Information Technology
Time Type: Full time
Minimum Clearance Required to Start: TS/SCI
Employee Type: Regular
Percentage of Travel Required: None
Type of Travel: None
* * *
The Opportunity:
Join a forward-leaning cybersecurity team focused on securing cutting-edge cloud-based platforms. Serve as a key security engineer in agile security scrums, collaborating with developers and system architects. Take ownership of continuous monitoring efforts and the implementation of NIST 800-53 security controls. Play a critical role in system accreditation processes using tools like XACTA and ACAS. Partner directly with customers to ensure compliance, transparency, and strong security postures across environments.
Responsibilities:
• Serve as the Information System Security Engineer (ISSE) supporting cloud-based and hybrid systems.
• Participate in security-focused scrum teams to integrate security into the development lifecycle.
• Conduct updates and system security assessments using XACTA.
• Perform automated vulnerability scans and analysis using tools like ACAS.
• Develop, update, and maintain all required system security documentation (SSPs, POA&Ms, etc.).
• Ensure compliance with multiple regimes, including NIST SP 800-53 and Risk Management Framework (RMF) requirements.
• Collaborate with internal and external stakeholders to resolve security concerns and improve controls.
• Lead and support continuous monitoring activities for operational systems.
• Design, implement, and maintain technical and procedural security controls.
• Contribute to Authority to Operate (ATO) packages and security reviews.
Qualifications:
Required:
• U.S. Citizenship required with an active TS/SCI clearance.
• Bachelor's degree in Cybersecurity, Information Systems, Computer Science, or related field.
• 5+ years of experience as a Security Engineer or ISSE, preferably in a cloud environment.
• Working knowledge of XACTA, ACAS, and NIST SP 800-53.
• Experience with RMF and federal cybersecurity compliance processes.
• Familiarity with continuous monitoring strategies and implementation.
• Proficiency in developing and maintaining security documentation.
• Strong communication and collaboration skills with both technical and non-technical stakeholders.
Desired:
• Experience with AWS or Azure Government cloud environments.
• CISSP, CAP, or other relevant cybersecurity certifications.
• Understanding of Agile methodologies and DevSecOps practices.
• Familiarity with other security tools (e.g., Nessus, Splunk, HBSS).
• Previous experience in direct customer-facing security roles.
-
________________________________________________________________________________________
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.
Your potential is limitless. So is ours.
Learn more about CACI here.
________________________________________________________________________________________
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. Learn more here .
Since this position can be worked in more than one location, the range shown is the national average for the position.
The proposed salary range for this position is:
$75,200-$158,100
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.
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