Marine Systems Engineer

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 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 Designing marine propulsion and drivetrain systems, including shafting, couplings, mounts, seals, bearings, and steering hardware Collaborating with naval architects on hull-to-machinery integration — packaging, weight and LCG, foundation loads, and appendage interfaces Owning thermal and fluid systems across the vessel, including cooling loops, pumps, plumbing, bilge, and ventilation Running structural, thermal, and hydrodynamic analysis to size and validate components before they get built Building and executing test plans on the bench, at the dock, and on the water, then turning that data back into design changes Releasing drawings, GD&T, BOMs, and specifications, and driving DFM/DFA with manufacturing and supply chain Partnering with electrical and controls engineers to integrate Arc's powertrain into the vessel Supporting USCG, ABS, and ISO compliance and evaluating suppliers for critical marine hardware Minimum Qualifications Bachelor's degree in Marine Engineering, Naval Architecture & Marine Engineering, Ocean Engineering, or Mechanical Engineering 3+ years designing and releasing mechanical systems for production, ideally on vessels or vehicles Background in machine design fundamentals — statics, dynamics, thermodynamics, fluids, and tolerance stack-up Proficiency with 3D CAD (SolidWorks, NX, or CATIA) and PDM/PLM workflows Experience owning a design through build, test, and iteration rather than handing it off at release Ability to work hands-on in the shop and on the water, including occasional sea trials This is an active role that will require consistent physical activity and standing for a majority of the shift Ability to lift, push, and pull 50 lbs This position may require access to information controlled under U.S. export control laws and regulations, including the International Traffic in Arms Regulations (ITAR). Applicants must be a 'U.S. person' as defined by ITAR (22 CFR §120.62) — i.e., a U.S. citizen, U.S. national, lawful permanent resident, or protected individual (asylee or refugee). Bonus Qualifications Professional Engineer or EIT in Naval Architecture Experience with small craft or high-speed craft Experience with electric or hybrid marine propulsion Passion for taking a vessel from a blank sheet to on-water validation Comfortable pushing at a fast but sustainable pace 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 is P2: $125,000 P3: $150,000 annually, Highly competitive equity grants are included with full time offers. As well as semi-annual bonuses tied to your impact, not just…