Information Systems Security Engineer

Job Title: Information Systems 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 Anticipated Posting End: 8/1/2026 The Opportunity The Information Systems Security Engineer (ISSE) serves as the primary technical authority for the security and resilience of our mission‑critical systems. This role is responsible for integrating security engineering principles into every phase of the Software Development Life Cycle to design and maintain secure architectures. You will collaborate with software developers, systems engineers, and government stakeholders to navigate the Risk Management Framework (RMF) lifecycle and maintain the Authority to Operate (ATO) for complex cloud and on‑premise environments. Responsibilities RMF & ATO Management: Lead the end‑to‑end Risk Management Framework (RMF) process, manage NIST 800‑53/171 control sets, and coordinate with cybersecurity entities (SCA/DAO) to secure and maintain Authority to Operate (ATO). Security Engineering & Cloud Oversight: Drive “security by design” by reviewing technical change requests, evaluating new technologies, and providing security oversight for cloud‑based platforms (AWS/Azure). Vulnerability & Risk Mitigation: Conduct system inspections and vulnerability assessments to manage POA&M, prioritize system patching, and ensure robust disaster recovery and contingency planning. Technical Compliance & Monitoring: Establish continuous monitoring protocols to track security posture, enforce cybersecurity policies, and brief complex technical risks to senior stakeholders. Qualifications Required: Bachelor’s Degree in Computer Science, Information Technology, Cybersecurity, Engineering, or related field. Minimum of 5 years of progressive experience in Cybersecurity, Information Assurance, or related background. Active TS/SCI clearance. DoD 8570 IAT Level II Compliance (e.g., Security+, CCNA Security, or CySA+). Full RMF lifecycle mastery: deep experience navigating the Risk Management Framework (NIST 800-37) to secure and maintain Authority to Operate (ATO). Control implementation expertise: NIST 800‑53 and 800‑171 control sets, including control inheritance and overlay application. Governance & documentation: ability to author cybersecurity policies, manage POA&M, and develop contingency/disaster recovery plans. Technical oversight: experience reviewing system changes for security impact and collaborating with dev teams to integrate new technologies securely. Continuous monitoring: proficiency in security inspections, audits, and vulnerability analysis to track patch effectiveness and system health. Cloud security: functional understanding of security operations within AWS or Azure environments. Stakeholder engagement: proven ability to brief complex technical risks to large groups and coordinate with SCAs and DAOs. Resilience: ability to manage high‑pressure tasks and mission‑critical deadlines independently and in teams. Desired: Basic understanding of the software development lifecycle. Experience with governance risk and compliance tools (e.g., Xacta, SNOW). Experience with industry tools (e.g., Nessus, Splunk, Anchore). Active TS/SCI with Polygraph. What You Can Expect A culture of integrity. At CACI, we place character and innovation at the center of everything we do. Our team is dedicated to our customers’ 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. You’ll have the autonomy to take the time you need through a unique flexible time‑off benefit and access robust learning resources to achieve your ambitions. A focus on continuous growth. Together, we advance our nation’s most critical missions, build on our track record of business success, and find opportunities to break new ground in your career and our legacy. Pay Range Salary ranges vary based on location, contract, experience, skills, education, and certifications. The proposed national average 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. #J-18808-Ljbffr