Date: Jul 15, 2026
Location: Pocasset, MA, Massachusetts, United States
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Company: HII's Mission Technologies division
Requisition Number: 28978
Required Travel: 0 - 10%
Employment Type: Full Time/Salaried/Exempt
Anticipated Salary Range: $66,388.00 - $94,840.00
Security Clearance: Secret
Level of Experience: Entry Level
This opportunity resides with Uncrewed Systems (UxS), a business group within HII’s Mission Technologies division. Uncrewed Systems comprises unmanned underwater vehicles (UUVs), unmanned surface vehicles (USVs) and autonomy software.
HII creates advanced unmanned solutions for defense, marine research and commercial applications. Serving customers in more than 30 countries, HII provides design, autonomy, manufacturing, testing, operations and sustainment of unmanned systems, including unmanned underwater vehicles (UUVs) and unmanned surface vessels (USVs).
Leadership Mindset at HII – Mission Technologies
Leadership at HII is a mindset, not a title. Through our Leadership Capability Framework, we define how every employee grows, leads, and contributes—regardless of role. It sets the standard for how you can develop yourself and what you can expect from leaders across our organization. We look for candidates who want to grow in alignment with these capabilities:
Know & Grow Your People – Commit to learning and supporting team success.
Build Relationships – Communicate openly, collaborate well, and build trust.
Take Ownership – Deliver on commitments and take pride in your work.
Customer First – Focus on the mission and those we serve.
Shape the Future – Bring ideas, curiosity, and continuous improvement.
Act with Urgency – Take initiative and follow through with purpose.
These capabilities guide how all employees contribute to our shared success across Mission Technologies.
Come Join HII! Where Hard Stuff is Done Right!
We have an exciting opportunity to join our Modeling and Simulation Group as a Simulation 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 Simulation 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.
What you will be doing!!
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. Models operational environments, performs trade studies via computer simulation and provides decision support for alternative architectures. Performs operational analysis and mission effectiveness analysis. Develop, code, 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. 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...
0 years experience with Bachelors in related field; or High School Diploma or equivalent and 4 years relevant experience.
Demonstrated C++/Python/MATLAB development experience
Demonstrated ability to quickly learn and exercise new tools
Linux system use and programming
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 to system modeling and simulation
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 (Unreal or Unity), etc.
Experience developing analytical models of discrete and continuous physical systems
Embedded software development
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.
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.
Meet HII’s Mission Technologies Division
Our team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe. Mission Technologies is leading the next evolution of national defense – the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that’s right for you. Apply today. We look forward to meeting you.
To learn more about Mission Technologies, click here for a short video: https://vimeo.com/732533072
HII is more than a job - it’s an opportunity to build a new future. We offer competitive benefits such as best-in-class medical, dental and vision plan choices; wellness resources; employee assistance programs; Savings Plan Options (401(k)); financial planning tools, life insurance; employee discounts; paid holidays and paid time off; tuition reimbursement; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application.
Why HII
We build the world’s most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.
Recognized as one of America’s top large company employers, we are a values and ethics driven organization that puts people’s safety and well-being first. Regardless of your role or where you serve, at HII, you’ll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career.
Together we are working to ensure a future where everyone can be free and thrive.
All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law.
Do You Need Assistance?
If you need a reasonable accommodation for any part of the employment process, please send an e-mail to
[email protected] 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.
