Modeling and Simulation Engineer 3

Date: Jul 24, 2026

Location: Pocasset, MA, Massachusetts, United States

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Company: HII's Mission Technologies division

Requisition Number: 29502

Required Travel: 0 - 10%

Employment Type: Full Time/Salaried/Exempt

Anticipated Salary Range: $101,665.00 - $145,236.00

Security Clearance: Secret

Level of Experience: Mid

This opportunity resides with Warfare Systems (WS), a business group within HII’s Mission Technologies division. Warfare Systems comprises cyber and mission IT; electronic warfare; and C5ISR systems.

HII works within our nation’s intelligence and cyber operations communities to defend our interests in cyberspace and anticipate emerging threats. Our capabilities in cybersecurity, network architecture, reverse engineering, software and hardware development uniquely enable us to support sensitive missions for the U.S. military and federal agency partners.

Leadership at HII – Mission Technologies

HII’s Leadership Capability Framework defines the standard of excellence expected of all leaders across Mission Technologies. Leaders are accountable for modeling these capabilities and building them within their teams:

Know & Grow Your People – Develop talent, empower teams, and build an inclusive environment.

Build Relationships – Strengthen trust, collaboration, and cross-functional partnerships.

Take Ownership – Drive accountability, execution excellence, and results.

Customer First – Anticipate mission needs and deliver value to our partners.

Shape the Future – Inspire innovation and align work with strategic priorities.

Act with Urgency – Make informed decisions and move with purpose.

These capabilities define how leaders inspire teams, deliver results, and shape the future of Mission

Come Join HII! Where Hard Stuff is Done Right!

We have an exciting opportunity to join our Modeling and Simulation Group as a Modeling and Simulation (M&S) Engineer to support our rapidly expanding portfolio of autonomous vessels. As HII Unmanned Systems continues to push the boundaries of multi-domain autonomy, one of our primary focuses is the architecture of our underwater and surface vehicles. The M&S Engineer will apply knowledge about hydrodynamics, virtual models, and HII’s unmanned vehicles to develop and execute a digital twin modeling and simulation environment. This will involve integration of vehicle hardware with the simulator and software development to enable a robust virtual testbed for advance autonomy solutions.

Overview: Develops new and/or integrates existing system simulation frameworks, performance models and algorithms, threat models and command and control models. Develops software that simulates behavior of users and systems. Develops, integrates and uses graphical user interfaces and visualization tools. Models operational environments, performs trade studies via computer simulation and provides decision support for alternative architectures. Performs operational analysis and mission effectiveness analysis. May build and design training models.

What you will be doing:

More Detail: Develop, codify, and test virtual models for vehicles, sensors, actuators, and auxilary equipment in a hydrodynamic simulation environment. Create/enhance virtual worlds for fully integrated mission simulation. Support development and integration of modeling and simulation standards into company processes. Set-up, perform, and analyze hardware-in-the-loop (HWIL) simulations to support various projects and applications in the business. Further develop hardware, software, and model in the loop capabilities with the simulation environment. Assist in the solution of difficult problems involved in areas of assignment. At times, support the development of advanced software including autonomy behaviors, path planning, and flight control. The duties described herein cover major duties as required. However, this does not exclude the requirement of performing related duties under normal conditions, and other duties directed by supervision.

What we are looking for...

5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience.

Demonstrated C++/Python/MATLAB development experience

Demonstrated ability to quickly learn and exercise new tools (Data/Image Processing, Machine Learning, SysML)

Ocean/Marine engineering knowledge: hydrostatics, hydrodynamics, ocean profiles, marine vessels, etc.

Ability to integrate hardware and software in the loop with simulation environment (establish communication protocols, data verification, robustness measures, etc.)

Ability to work and succeed within a system engineering applied project.

Ability to apply mathematical concepts (State-space modeling, Probability, Random Processes) to system modeling and simulation

GUI development experience

Familiarity/interest in robotic systems and ROS2.

Demonstrated technical writing and communication skills

Ability to work both independently and in a collaborative team environment.

Applicants selected for this position will be required to obtain and maintain a government security clearance. #LI-MH1

Bonus points for...

Experience performing and analyzing hydrodynamic simulations.

Data analysis and visualization experience.

Previous simulation experience with HWIL development, Gaming Engines, etc.

Experience developing analytical models of discrete and continuous physical systems

Linux system use and programming.

Experience developing with UDP and TCP

Experience with Kalman filtering, search algorithms, trajectory planning, and control systems.

Design of experiments for simulation/tank/at-sea testing

Exposure to CFD Tools: Solidworks, Star CCM, OpenFOAM, FINE

Physical Requirements

May require working in an office, industrial, shipboard, or laboratory environment. Capable of climbing ladders and tolerating confined spaces and extreme temperature variances.

The listed salary range for this role is intended as a good faith estimate based on the role's location, expectations, and responsibilities. When extending an offer, HII's Mission Technologies division takes a variety of factors into consideration which include, but are not limited to, the role's function and a candidate's education or training, work experience, and key skills.

Together we are working to ensure a future where everyone can be free and thrive.

Do You Need Assistance?

If you need a reasonable accommodation for any part of the employment process, please send an e-mail to buildyourcareer@hii-co.com and let us know the nature of your request and your contact information. Reasonable accommodations are considered on a case-by-case basis. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to from this email address. Additionally, you may also call 1-844-849-8463 for assistance. Press #3 for HII Mission Technologies.