Manufacturing Engineering Intern

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 a curious, hands-on engineer who wants to understand how things are built and make the process better. You’ll join our Manufacturing Engineering team in Torrance, working alongside engineers, technicians, supervisors, and quality partners on real production challenges.

With mentorship from a full-time engineer, you’ll own a scoped improvement project from observing the process and collecting data through implementing a solution and measuring the results. You should enjoy spending time on the production floor, listening to the people doing the work, and turning ideas into practical improvements.

Internship Term - June 14–August 20, 2027, onsite at our Torrance headquarters.

What You'll Do

• Observe production processes and perform time studies to identify bottlenecks, excess motion, rework, and opportunities to reduce build hours.

• Create and improve work instructions, process flows, and assembly sequences with input from technicians and engineers.

• Design, prototype, and validate tools, fixtures, and shop aids that improve repeatability, ergonomics, and build quality.

• Support root-cause investigations into production issues and help implement corrective actions.

• Partner with design engineering and quality to improve manufacturability and support the introduction of new parts or processes.

• Use build and quality data to compare performance before and after changes, documenting results and lessons learned.

• Present your project, results, and recommended next steps to the team at the end of the internship.

Minimum Qualifications

• Pursuing a degree in Manufacturing, Mechanical or a related engineering discipline.

• Experience building, assembling, testing, or improving hardware through coursework, a student team, research, an internship, or personal projects.

• Foundational understanding of engineering drawings, tolerances, and common manufacturing or assembly methods.

• Basic ability to create or modify parts in a 3D CAD tool.

• Ability to organize and analyze data using Excel, Google Sheets, or a similar tool.

• Clear communication, attention to detail, and a collaborative approach to solving problems.

• Willingness to work hands-on in a production environment, follow safety procedures, and learn from technicians.

Bonus Qualifications

• Experience with composites, bonding, trimming, finishing, mechanical assembly, or battery manufacturing.

• Exposure to time studies, standard work, line balancing, lean manufacturing, or continuous improvement.

• Experience designing fixtures or using machining, 3D printing, or other fabrication methods.

• Familiarity with NX, Teamcenter, a manufacturing execution system, or digital work instructions.

• Experience on a student engineering team or in a manufacturing setting.

• Interest in electric vehicles, boats, and improving how products are built.

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, as an Arc Intern, you'll also get:

• 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

We move with urgency and build with care. 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, and perspectives.

We want people who share and embody these values. It is vital that our values align - we’d be happy to elaborate on any or all of these during the interview process.