Mechanical Engineering Intern

What we’re building

Our vision is to electrify all waterborne vessels, and we're starting with electric water sport boats.

Gas boats dominate today’s marine industry not because of great product offerings but because of a lack of better alternatives. Boaters have grown accustomed to vehicles that feel stuck in the 1980s: unreliable, expensive, loud, noxious, and a nightmare to own and operate. They’re also awful for the water and air they reside in.

By contrast, electric boats are superior in nearly every way: not only are they far more reliable and less costly to operate, but they’re also quieter, quicker, and cleaner, with no fumes or pollutants. However, they’ve been held back by both the technology and the talent to make them truly competitive with gas alternatives. That’s Arc’s opportunity.

Using modern, aerospace- and automotive-inspired techniques, we’re building our hulls, batteries, cooling systems, firmware, and software together to deliver the next generation of watercraft.

What we’re looking for

We are looking for someone who is excited by our vision, eager for a challenge, and willing to learn on the job. We pride ourselves on transparency and operate in a lean, high-trust environment that encourages everyone to take ownership of their domain. 

You will report directly to our Manager, Vehicle Engineering as a summer intern from June 15th-August 21st 2025 and 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 That said, here are some responsibilities and qualifications we expect to stay relatively constant for this role.

Core responsibilities

• 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

Basic 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 value

We value these five things above all else:

• Ownership over both your work and the company’s success
• Empathy for colleagues and for customers
• Humility in problem solving and collaboration
• Pragmatism for navigating ambiguity quickly and sensibly
• Inclusion of different backgrounds, opinions, cultures, etc.

Given that we work in a sometimes intense or stressful environment, it’s vital that our values align. We’d be happy to elaborate on any or all of these during the interview process.

What you’ll get

• An hourly wage of $36.00
• Talented teammates that challenge you to be better
• Access and often input to a wide range of business activities
• An opportunity to have an outsized impact on industry-defining vehicles
• The ability to drive positive environmental change through your work
• Daily lunches, plenty of snacks, lots of swag, and more
• Boat rides!

Hope to hear from you soon!

The crew at Arc