Vertex Inc

Modeling and Simulation Engineer (Multi Domain Physics)

Vertex Inc • $90K — $120K *
Indianapolis, IN 46227In-Person
Aerospace & Defense
5 - 7 years of experience
Today
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Job Overview by Ladders

Qualifications

  • Minimum of six years of relevant professional experience in modeling systems
  • Expertise in MATLAB, Simulink, and Simscape for system modeling
  • Proficiency in dynamic systems and thermal-fluid simulation tools
  • Experience with hardware-in-the-loop testing and real-time deployment
  • Ability to implement systems engineering principles in simulations
  • Strong skills in technical data analysis and model verification
  • Excellent communication and teamwork abilities, including mentoring
  • US Citizenship with ability to obtain a secret clearance

Responsibilities

  • Develop multi-domain physics-based models and simulations for aerospace systems
  • Validate models with experimental lab data and hardware-in-the-loop setups
  • Support controls integration and closed-loop performance verification
  • Analyze interactions and transient responses in mechanical systems
  • Refine models based on experimental results for accuracy
  • Collaborate with global teams to define modeling objectives and quality
  • Document analysis processes and produce verification artifacts
  • Mentor junior engineers and advocate for best practices in modeling

Benefits

  • Opportunities for professional development and training
  • Collaborative work environment with cross-functional teams
  • Potential for involvement in cutting-edge aerospace projects
  • Support for career advancement and technical leadership
Full Job Description
Overview

The Modeling and Simulation Engineer (Multi-Domain Physics) will develop actuator models and system-level integrations to support aerospace research and product development. This role focuses on creating and validating mathematical models and multi-body dynamic simulations using MATLAB, Simulink, and Simscape to analyze the performance of thermal fluid systems, pneumatic actuators, and electro-mechanical mechanisms. The engineer will collaborate with cross-functional teams, guide global modeling initiatives, and provide technical leadership to advance model-based engineering practices.

Responsibilities

Key Responsibilities:
  • Develop multi-domain physics-based plant models and multi-body dynamic simulations for aerospace systems, including actuators, thermal fluid systems, and dynamic mechanical systems.
  • Validate models using experimental lab data, application testing, and hardware-in-the-loop (HIL) setups.
  • Support controls integration with system-level simulations for closed-loop performance verification and stability analysis.
  • Analyze actuator-structure interactions, load transmission, and transient responses using multi-domain coupling techniques.
  • Refine and update models based on experimental results to improve predictive accuracy and reliability.
  • Collaborate with global teams and product teams to define modeling objectives, assumptions, and expected results while ensuring the technical quality of model deliverables.
  • Document analysis processes and produce traceable verification artifacts, including interface control documents and verification matrices.
  • Mentor junior engineers, support global modeling efforts, and champion best practices for modeling and simulation workflows.

Qualifications

Required Skills:
  • Minimum of six (6) years of relevant professional experience, including hands-on work in modeling mechanical, thermal fluid, pneumatic, and actuator systems.
  • Expertise in MATLAB, Simulink, and Simscape (including Simscape Fluids) for modeling mechanical, thermal fluid, pneumatic, and actuator systems.
  • Proficiency in modeling and simulation tools for dynamic systems and thermal-fluid systems.
  • Experience with hardware-in-the-loop testbeds, real-time model deployment, and system testing.
  • Ability to implement systems engineering principles for simulation activities, including multidisciplinary system coupling and actuator integration.
  • Strong technical data analysis, model refinement, and verification skills using experimental and flight test data.
  • Excellent cross-functional communication and teamwork abilities, including mentoring, technical oversight, and delivering traceable verification artifacts.
  • Familiarity with aerospace and defense standards (e.g., MIL-STD-810/DO-254).
  • US Citizenship with the ability to obtain and maintain a secret clearance.

Desired Skills:
  • Ten (10) years or more of relevant professional experience, including hands-on work in modeling mechanical, thermal fluid, pneumatic, and actuator systems.
  • Knowledge of Simulation Process Data Management (SPDM) tools.
  • Experience with advanced modeling software such as Siemens Amesim.
  • Hands-on experience with multi-body dynamics and actuator-structure interaction assessments.
  • Exposure to CAD/FEA workflows, thermal-stress analyses, and experimental testing.

Education Requirements:
  • Bachelor's degree in mechanical or aerospace engineering, or a related discipline from an accredited institution.
  • Advanced degree (MS or PhD) in mechanical or aerospace engineering, or a related discipline strongly preferred but not required.

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About Vertex Inc

Vertex Inc is a leading provider of tax technology and services, enabling companies of all sizes to realize the full strategic potential of the tax function by automating and integrating tax processes, while leveraging advanced and predictive analytics of tax data. Vertex provides cloud-based and on-premise solutions that can be tailored to specific industries for every major line of tax, including income, sales and consumer use, value added and payroll. Vertex also offers solutions for tax data management, compliance and reporting, tax research, and planning and analysis. The company was founded in 1978 and is headquartered in King of Prussia, Pennsylvania.
Learn more about Vertex Inc
Size
1,200 employees
Market Cap
$2.2 billion
Industry
Business Services
Net Income
-$78.9 million
Founded
1978
Revenue
$374.6 million
NASDAQ
VERX
* Ladders Estimates

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