Mechanical Engineering Intern - Powertrain

What we’re building

The marine industry supports recreation, global commerce, and national defense. And yet it runs on technology that hasn't meaningfully changed in fifty years. Until now.

Arc is on a mission to electrify the marine industry. We're rethinking powertrains, software, and vessel designs from first principles. And we're already executing. We started with consumers to develop and harden our core technology. We’re now scaling production of our flagship model with new models and sectors on the horizon. Now we’re extending our platform to commercial applications, starting with tugs, ferries, and defense, with years worth of signed contracts and a pipeline that spans every vessel type on the water.

The technology is proven, the momentum is building, and the opportunity is enormous. The marine industry is going electric and Arc is building the platform that powers it

Who we’re looking for

We’re looking for someone who’s fired up by our mission and ready to build. You’ll thrive here if you adapt quickly, take ownership, and care about the details.

You will join our Mechanical Engineering team as a summer intern from June 14th-August 20th 2027. You will work from our headquarters in Torrance, CA. Given that we’re a startup, you will be working in a fast-moving, dynamic environment that requires adaptability. That said, here are some responsibilities and qualifications we expect to stay relatively constant for this role.

What You'll Do

Owning hardware completely, including specifications, design, prototyping, testing, and high-volume manufacturing

Designing mechanical, thermal and/or fluid systems

Getting hands on with building and testing

Using a combination of hand calculations, prototyping, and software to engineer parts

Supporting the design of next generation products

Minimum Qualifications

Hands on project experience

Excellent grasp of the fundamentals of Mechanical, Thermal, and Fluids Engineering

Exposure to manufacturing methods for engineering parts

Clear written and verbal communication

Basic experience with CAD software package

Bonus Qualifications

Familiarity with high performance electric vehicles, solar cars, Formula SAE, or similar

Knowledge of modeling software such as Matlab and Simulink

FEA experience (any platform)

First Hand experience owning or using water sports boats

Exposure to sheet metal manufacturing, CNC machining, CAM, and shop tools

Prior experience in a fast-paced manufacturing setting

Strong time management skills

Comfortable pushing a fast but sustainable pace

Enthusiasm for boating and clean energy

At Arc, we encourage diversity and consider all qualified applicants equally for employment, regardless of background, identity, or status. You’re always welcome to reach out even if you don’t meet many of these qualifications. Passion and aptitude make up for a lot.

What we offer

The base pay for this role is $36 per hour.

Additionally, Arc offers top-tier benefits for full-time employees, including:

Boat days – Yes, we actually go out on the water. A lot.

Retirement savings — Traditional and Roth 401(k) access

Safety support — Reimbursement for PPE, ergonomic equipment, and anything that ensures we keep our crew safe

Relocation Assistance

Mentorship Opportunities

Office perks — Daily lunches, snacks, and good coffee while onsite

Our values