---
title: 'Senior Battery Mechanical Engineer at Arc Boat Company'
canonical: 'https://feeny.ai/job/senior-battery-mechanical-engineer-arc-boat-company-torrance-1nevs73k3jjv'
type: 'job'
last_seen: '2026-09-13'
---

# Senior Battery Mechanical Engineer at Arc Boat Company

- **Company:** Arc Boat Company
- **Location:** Torrance, CA
- **Posted:** 2026-09-03
- **Last confirmed live:** 2026-09-13
- **Apply:** https://job-boards.greenhouse.io/arcboatcompany/jobs/5415671008

## Job description

## 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

As Arc’s Senior Battery Mechanical Engineer you will own the mechanical design of our battery packs.

We're looking for someone fired up by the mission and ready to build. You'll thrive here if you move fast, take ownership, and care about the details.

This is a full-time, on-site role at our Los Angeles headquarters.

## What You'll Do

- Leading battery pack mechanical design across Arc's product lines — defining pack architecture and carrying it through to detailed structure, enclosure, busbar, and electronics packaging design
- Performing structural analysis (FEA, hand calculations, and numerical modeling) on enclosures, busbars, and internal components against the vibration, shock, and slamming loads seen on the water
- Sizing and designing pack thermal management systems, including cold plates, coolant routing, and heat rejection, and validating models against test data
- Partnering closely with electrical engineering on cell selection, busbar and interconnect design, HV isolation and creepage/clearance, and BMS and sensor integration
- Packaging packs into tight hull envelopes, balancing energy density, mass, safety, serviceability, and manufacturability
- Building and testing prototypes hands-on, running thermal, structural, and abuse validation and driving design iterations from the results
- Supporting sea trials to validate and certify systems in the field
- Interfacing with cell, module and component suppliers and supporting production ramp

## Minimum Qualifications

- 6+ years of mechanical engineering experience, including 3+ years designing battery packs or modules and owning them from concept through production
- Excellent grasp of structural and thermal engineering fundamentals, with hands-on experience applying FEA, hand calculations, and numerical modeling to real hardware
- Working knowledge of high voltage battery systems, including cell behavior, electrical isolation, thermal runaway, and how mechanical design drives pack safety
- Experience collaborating closely with electrical engineers on busbars, interconnects, and BMS/sensor integration
- Proficiency with a major CAD package such as NX, including large assemblies and detailed part design
- Experience creating and detailing engineering drawings, with a solid understanding of GD&T
- Strong intuition for manufacturing methods — if you're handed a part, you know how it was likely made and what it costs
- Practical experience designing, building, and troubleshooting hardware in production environments
- Clear written and verbal communication
- Strong time management skills
- Comfortable pushing at a fast but sustainable pace
- Comfortable spending time on boats in the field to collect test data
- Taking full ownership, thinking from first principles, and knowing how to prioritize technical problems efficiently based on the most business value (or business impact)

Bonus Qualifications

- Experience with cell-to-pack or module-to-pack design in automotive, aerospace, or defense applications
- Familiarity with battery safety and certification standards (e.g. UL 2580, UN 38.3, ISO 6469, ABYC E-13) and thermal runaway propagation mitigation
- Experience with fluid system design including pump sizing, heat exchanger sizing, and hose/pipe routing
- Exposure to sheet metal manufacturing, CNC machining, and shop tools
- Firsthand experience on marine vessels, including knowledge of Coast Guard and ABS regulations
- Experience with modeling tools such as Matlab and Simulink for thermal and structural sizing
- Enthusiasm for boating and the water

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 salary for this role isP3: $150,000 P4: $180,000 annually.

Highly competitive equity grants are included with full time offers. As well as semi-annual bonuses tied to your impact, not just your tenure.

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

- Healthcare benefits — 99% employer-paid medical, dental, and vision
- Parental leave — 14 weeks fully paid for birthing and non-birthing parents
- Generous time off — Highly competitive PTO with  an opportunity to earn more time with tenure
- Income protection — Life and disability insurance for all employees
- Retirement savings — Traditional and Roth 401(k) access
- Water fund — $500 for you to spend each year to get out on the water, however you choose
- Professional development — $500 annual reimbursement for professional development and a monthly AI stipend
- Safety Support- Annual reimbursement for PPE, ergonomic equipment and anything that ensures we keep our crew safe
- Captain training — Training and access to take Arc boats out with friends and family
- Office perks — Daily  lunches, snacks, and good coffee while onsite
- Relocation assistance — Available depending on role eligibility.

## 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.

## About Arc Boat Company

## Company Overview
- **One-liner**: Arc Boat Company designs and manufactures high-performance, all-electric recreational and commercial watercraft, vertically integrating battery packs, powertrains, software, and hulls.
- **Entity Type**: Private (Series B; total funding >$100M)
- **Headquarters**: Los Angeles, California, United States
- **Founded**: 2021
- **Founders**: Mitch Lee (CEO) and Ryan Cook (CTO)

## Core Business
- **Primary industry**: Electric boat manufacturing (recreational and commercial marine)
- **Target customers**: Mass-market wake sport and center console boaters (B2C), commercial fleet operators including tugboat companies and defense (B2B/Government)
- **Mission or purpose statement**: “Electrifying the marine industry… until everything that floats is electric.” [arcboats.com](https://arcboats.com/about)

## Products & Services
- **Arc One**: 24‑ft luxury electric boat (220 kWh battery, 500 hp, $300,000). Sold out. Introduced late 2021. [arcboats.com](https://arcboats.com/about)
- **Arc Sport**: 23‑ft wake sport boat (226 kWh battery, 500 hp, 4–6 hours active use). Launched February 2024. Aims to bring electric boating to the mass market. [wikipedia.org](https://en.wikipedia.org/wiki/Arc_(company))
- **Arc Coast**: 24‑ft all‑electric center console (226 kWh, 400 hp, 50 mph top speed, starting at $168,000). Deliveries expected in 2026. [wikipedia.org](https://en.wikipedia.org/wiki/Arc_(company))
- **Electric Commercial Workboats**: Hybrid‑electric ship‑assist tugboats (8 vessels, 4,000 hp, 6 MWh batteries) in partnership with Curtin Maritime. Also a retrofitted electric tugboat with Portland‑based Diversified Marine. [wikipedia.org](https://en.wikipedia.org/wiki/Arc_(company))

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed. (Private company)
- **Key Metric**: Total funding ~$104M ($4.25M seed, $30M Series A, $70M Series B). A $160M commercial partnership with Curtin Maritime signed in 2025. [wikipedia.org](https://en.wikipedia.org/wiki/Arc_(company))
- **Notable Investors/Partners**: Andreessen Horowitz (lead Seed), Eclipse Ventures (lead Series A), Menlo Ventures (lead Series B), Lowercarbon Capital, Abstract Ventures, and celebrity investors Will Smith and Kevin Durant. [wikipedia.org](https://en.wikipedia.org/wiki/Arc_(company))
- **Growth Signals**: Expanding from recreational boats into commercial ferries, defense, and tugboats. Opened a 150,000 sq ft factory in Los Angeles. Plans to install charging infrastructure at the Port of Los Angeles (AltaSea campus). Headcount >100 employees. [arcboats.com](https://arcboats.com/about) [wikipedia.org](https://en.wikipedia.org/wiki/Arc_(company))

## Competitive Advantages
- **Vertical integration**: In‑house design of battery packs, powertrain, thermal control systems, and software – unique among boat builders. This enables a cohesive feel, real‑time performance monitoring, and rapid iteration.
- **SpaceX‑inspired engineering**: CTO Ryan Cook is a former SpaceX lead engineer; the team blends aerospace design/manufacturing techniques with traditional marine craftsmanship.
- **First‑mover in electric wake boats**: The Arc Sport is the first mass‑market electric wake sport boat, offering instant torque and lower operating costs compared to premium gas‑powered alternatives.
- **U.S. manufacturing**: Designed and built in the USA, with a large factory in Los Angeles and partnerships with domestic shipyards.

## Strategic Focus
- Scale production of the Arc Sport and Arc Coast to capture the recreational market.
- Lead the electrification of commercial marine with hybrid‑electric tugs and workboats, targeting port operations and defense contracts.
- Build charging and service infrastructure (e.g., Port of Los Angeles AltaSea campus) to support fleet customers.
- Continue raising capital or forming strategic partnerships to fund growth, as evidenced by the $160M commercial deal.

## Why Work Here
- **Culture**: Founded by former SpaceX engineers; a fast‑paced, engineering‑first environment (“rocket engineers, EV experts, and avid boaters”). Emphasis on building everything from scratch and owning the full stack.
- **Growth trajectory**: Early‑stage (21 open positions as of mid‑2025) with strong funding and a clear path to scale. Opportunity to join during a period of rapid expansion from recreational to commercial/defense.
- **Location**: Headquarters and factory in Torrance/Los Angeles, CA; some roles remote‑friendly (e.g., Sales Advisor in Austin, TX). Roles span engineering, production, supply chain, people, sales, and commercial programs. [greenhouse.io](https://job-boards.greenhouse.io/arcboatcompany)
- **Perks**: Work on cutting‑edge electrification technology with real environmental impact; hands‑on with both design and production; “American‑made” pride.

## Sources
1. [Arc Boats official site](https://arcboats.com/)
2. [Arc Boats - About page](https://arcboats.com/about)
3. [Arc Boats - Careers page](https://arcboats.com/careers)
4. [Arc Boat Company jobs on Greenhouse](https://job-boards.greenhouse.io/arcboatcompany)
5. [Wikipedia - Arc (company)](https://en.wikipedia.org/wiki/Arc_(company))

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