Job Title: Senior Systems Engineer / Information Systems Security Officer (ISSO) Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * The Opportunity: Join CACI as a Systems Engineer with an Information Systems Security Officer (ISSO) focus, where you will play a key role in ensuring the security, integrity, and reliability of mission‑critical systems. You will apply systems engineering principles across the full system lifecycle—from concept through retirement—while partnering closely with stakeholders, technical teams, and senior leadership. This role offers the chance to directly influence secure system design, support cloud modernization efforts, and guide programs through key security authorization activities. Responsibilities • Serve as the primary liaison ensuring clear communication and alignment across teams. • Act as the security coordinator for all assigned products, including STE/STN activities, SSP reauthorization, and accessibility (508) compliance. • Collaborate with the cloud architecture team to support cloud migration and integration efforts. • Provide systems engineering expertise across all ISO/IEC 15288 process areas and maintain accountability for the technical quality, integrity, and completeness of associated deliverables. • Communicate effectively with sponsors, overseers, and senior executives to address engineering considerations and resolve technical issues. Qualifications Required: • Active TS/SCI with Polygraph. • 20+ years of experience as a Systems Engineer supporting programs of similar scope, type, and complexity. • Proven ability to plan, lead, and execute systems engineering efforts. • Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related field. • May substitute 5 additional years of systems engineering experience in lieu of a bachelor’s degree.) Desired: • Experience working in hybrid SE/ISSO roles • Familiarity with cloud technologies and cloud migration initiatives • Strong communication skills with experience interfacing with senior government or program stakeholders • Knowledge of ISO/IEC 15288 processes and lifecycle management best practices. This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI. 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: $131,800 - $290,000 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.