Systems Modeler

Herren Associates, Inc.; Washington (District of Columbia); On-site; USD 90,000 - 130,000; Full time

Job summary

Herren Associates, Inc. seeks a Systems Modeler in Washington, DC to develop MBSE products for DoD customers.

The role focuses on building SysML models of system structure, behavior, and interfaces using Cameo Systems Modeler, and integrating with MATLAB/Simulink or Modelica for validation of dynamic behavior. The ideal candidate has strong SysML skills, experience with parametric modeling, and is eligible for DoD clearance.

Qualifications

• Strong SysML modeling skills and ability to represent dynamic behavior.
• Experience building parametric models (parametric diagrams, constraint blocks).
• U.S. citizenship and DoD security clearance eligibility.

Responsibilities

• Develop and maintain SysML models for structure, behavior, and interfaces.
• Build parametric models to capture relationships and design trade-offs.
• Model dynamic behavior with state machines, activity diagrams, sequence diagrams, and simulations.
• Integrate SysML models with MATLAB/Simulink, Modelica, or similar tools.
• Maintain traceability between requirements, functions, and models.
• Document modeling assumptions and results for reports.

Skills

Analytical skills

Attention to detail

Translating requirements to models

Education

Bachelor's degree in systems engineering / related field

Master's degree in systems engineering or related field

Tools

Cameo Systems Modeler

MATLAB/Simulink

Modelica

Job description

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Systems Modeler

Full Time Washington, DC, US

At Herren Associates, we're focused on driving innovation throughout the Federal landscape and in the business of turning insights into actions. Specializing in Cyber Security, Engineering and Management Consulting, our firm has a passion for fostering career progression and seeks to align motivated professionals with rewarding homes for their careers. With over thirty years of experience supporting an array of clients throughout the Public Sector, we welcome you to learn more about our dynamic organization and the role that you can play as we chart out a course for continued impact in the years to come.

Herren Associates is seeking a Systems Modeler to develop, build, and maintain model-based systems engineering (MBSE) products supporting Department of Defense customers. The Systems Modeler will build structural and behavioral models - with particular emphasis on parametric modeling and the representation of dynamic system behavior - that support engineering analysis, trade studies, and program decision-making.

The ideal candidate combines strong SysML modeling skills with hands-on experience representing dynamic system behavior, including parametric relationships, constraints, and time- or state-driven behavior. Prior military service or professional experience supporting DoD programs is a plus. Department of the Navy experience is preferred.

Primary Responsibilities

• Develop and maintain SysML models representing system structure, behavior, and interfaces using Cameo Systems Modeler or comparable MBSE tools.
• Build parametric models and constraint blocks to capture engineering relationships, performance parameters, and design trade-offs.
• Model dynamic system behavior using state machines, activity diagrams, sequence diagrams, and simulation-driven approaches.
• Represent time-dependent and state-driven behavior of complex systems, including control loops, mode transitions, and system responses to inputs and disturbances.
• Support trade studies and engineering analyses by executing parametric and behavioral models and interpreting results.
• Integrate SysML models with simulation and analysis tools (e.g., MATLAB/Simulink, Modelica) to validate dynamic system behavior.
• Maintain traceability between requirements, functions, interfaces, and model elements.
• Support development of architecture products, including mission threads, use cases, activity diagrams, and requirements architectures.
• Apply modeling conventions, naming standards, and configuration management practices established by the lead architect or model owner.
• Participate in technical reviews, architecture working groups, and stakeholder meetings to present and validate models.
• Document modeling assumptions, methods, and results to support technical reports and briefings.

Required Qualifications

• Bachelor's degree in systems engineering, mechanical engineering, aerospace engineering, electrical engineering, computer engineering, or a related field.
• Three or more years of experience in systems engineering, MBSE, or systems modeling.
• Hands-on experience building parametric models (parametric diagrams, constraint blocks) in SysML.
• Experience modeling dynamic system behavior using state machines, activity diagrams, sequence diagrams, or simulation-based methods.
• Experience with Cameo Systems Modeler or a comparable MBSE platform.
• Working knowledge of systems engineering lifecycle activities, including requirements, architecture, and verification.
• Ability to translate engineering requirements and physical system relationships into structured, executable models.
• Strong analytical and problem-solving skills with close attention to model accuracy and detail.
• U.S. citizenship and eligibility to obtain and maintain a DoD security clearance.

Preferred Qualifications

• Experience with MATLAB/Simulink, Modelica, or similar tools for dynamic or physics-based system simulation.
• Experience integrating parametric SysML models with engineering analysis tools to support trade studies.
• Familiarity with UAF, DoDAF, or related architecture frameworks.
• Experience with Navy or DoD platforms, mission systems, or acquisition programs.
• Prior military service or professional experience supporting DoD programs.
• Relevant certifications such as OCSMP, INCOSE ASEP/CSEP, or Cameo certification.
• Master's degree in systems engineering or a related engineering discipline.

Desired Candidate Profile

The successful candidate will be a detail-oriented modeler who can translate complex system requirements and physical relationships into precise, executable SysML models. The role requires strong parametric modeling skills and the ability to accurately represent dynamic system behavior, producing traceable models that support engineering analyses and decisions made by program and technical leadership.

Herren Associates is an Equal Opportunity Employer.