Model Based Systems Engineer (MBSE)

Company: CACI
Location: Reston
Posted on: April 3, 2026

Job Description:

Job Title: Model Based Systems Engineer (MBSE) Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: Secret Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * The Opportunity: The MBSE Systems Engineer will be responsible for applying model-based systems engineering (MBSE) approaches throughout the lifecycle of IBS-NS systems to ensure that design, development, and implementation meet all necessary requirements. This role focuses on the use of models to represent systems, enabling efficient decision-making, collaboration, and validation. The MBSE Systems Engineer will execute requirements modeling using various modeling tools to convert requirements into executable, traceable models that can guide the system development process. Additionally, this position involves converting existing IBS-NS DOORS and Rational Rose models to Government modeling tools, performing requirements definition and analysis, system architecture design, developing new detailed system models, and conducting integration planning and model validation. Responsibilities : 1. Model-Based Systems Engineering (MBSE): - Apply MBSE approaches throughout the system lifecycle to ensure alignment with requirements. - Use models to represent IBS-NS systems, facilitating efficient decision-making and collaboration. 2. Requirements Modeling: - Execute requirements modeling using modeling tools to convert requirements into executable, traceable models. - Guide the system development process using these models. 3. Model Conversion: - Convert existing IBS-NS DOORS and Rational Rose models to Government modeling tools. - Ensure accuracy and integrity of models post-conversion. 4. Requirements Definition and Analysis: - Define and analyze requirements for system and software updates to operational baselines. - Ensure requirements are clear, complete, and verifiable. 5. System Architecture Design: - Design system architecture for system and software updates to operational baselines. - Ensure architectural designs are robust, scalable, and align with system requirements. 6. Detailed System Modeling: - Develop new detailed system models (e.g., new Kubernetes platforms) to demonstrate system behavior. - Use modeling tools to create and validate these models. 7. Integration Planning: - Plan for the integration of system components ensuring seamless operation. - Develop integration strategies that align with system requirements and architectural designs. 8. Model Validation: - Validate models to ensure they accurately represent system behavior and meet requirements. - Perform validation activities throughout the system lifecycle. Qualifications : Required : Bachelor’s degree in Engineering, Computer Science, or a related field. Master’s degree preferred. Minimum of 10 years of experience in systems engineering with a focus on MBSE. Currently hold an active Secret clearance or ability to successfully obtain (Interim Secret required prior to start) Experience with modeling tools such as DOORS, Rational Rose, and Government modeling tools. - Experience in requirements modeling, system architecture design, and model validation. Strong understanding of MBSE principles and practices. Proficiency in modeling tools and techniques. Excellent analytical and problem-solving skills. Strong communication and collaboration skills. Ability to work in a team environment and manage multiple tasks simultaneously. Desired: Certification in MBSE (e.g., INCOSE Certified Systems Engineering Professional) Highly Desired Experience with Kubernetes and containerized environments. Familiarity with government systems and modeling standards. Experience in a similar role within the defense or aerospace industry. - 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.

Keywords: CACI, Leesburg , Model Based Systems Engineer (MBSE), Engineering , Reston, Virginia