Mechanical Engineer, Thermal and Fluid Systems

The role

You will own thermal and fluid systems across vessels, including cooling loops, pumps, plumbing, bilge, and ventilation. You will perform structural and thermal analysis, collaborate with naval architects, and execute test plans on the bench, at the dock, and on the water.

What you will do

• Owning thermal and fluid systems across the vessel
• Running structural and thermal analysis to size and validate components
• Collaborating with naval architects on hull-to-machinery integration
• Releasing drawings, GD&T, BOMs, and specifications
• Driving DFM/DFA with manufacturing and supply chain
• Building and executing test plans on the bench, at the dock, and on the water
• Partnering with electrical and controls engineers to integrate powertrain
• Supporting the design of marine propulsion and drivetrain systems
• Supporting USCG and ABS compliance and evaluating suppliers

Required qualifications

• Bachelor's degree in Mechanical, Marine, Ocean, or Aerospace Engineering, Naval Architecture, or a related engineering discipline
• 3+ years designing and releasing mechanical systems for production
• Experience owning a design through build, test, and iteration
• Hands-on experience with structural and thermal analysis, including FEA and hand calculations
• Proficiency with 3D CAD (SolidWorks, NX, or CATIA), GD&T, and PDM/PLM workflows
• Ability to work hands-on in the shop and on the water, including occasional sea trials
• Ability to lift, push, and pull 50 lbs
• Must be a U.S. person as defined by ITAR (U.S. citizen, U.S. national, lawful permanent resident, or protected individual)

Nice to have

• Experience designing marine cooling, bilge, ventilation, or other commercial vessel systems
• Familiarity with USCG and ABS rules
• Experience with electric or hybrid marine propulsion
• Professional Engineer (PE) license in Mechanical (Thermal and Fluid Systems) or Naval Architecture and Marine Engineering
• Passion for taking a vessel from a blank sheet to on-water validation
• Comfortable working at a fast but sustainable pace
• Enthusiasm for boating and the water

Benefits

• 99% employer-paid medical, dental, and vision
• 14 weeks fully paid parental leave for birthing and non-birthing parents
• Highly competitive PTO
• Life and disability insurance
• Traditional and Roth 401(k) access
• $500 annual water fund
• $500 annual professional development reimbursement and a monthly AI stipend
• Annual reimbursement for PPE and ergonomic equipment
• Captain training
• Daily lunches, snacks, and good coffee
• Relocation assistance depending on role eligibility

About the company

Arc is on a mission to electrify the marine industry by rethinking powertrains, software, and vessel designs. They are scaling production of their flagship model and extending their platform to commercial applications.