Senior Mechanical Engineer

Arc Boats•Torrance, CA

8d•Onsite

About The Position

Arc is on a mission to electrify the marine industry by rethinking powertrains, software, and vessel designs. We have proven technology, growing momentum, and significant contracts in commercial applications like tugs, ferries, and defense. As Arc’s Mechanical Engineer, you will own the design and integration of complex electromechanical systems across the full vehicle lifecycle, from early concept and requirements through prototyping, validation, sea trials, and production. This is a full-time, on-site role at our Los Angeles headquarters reporting to our Manager, Mechanical Systems Engineering.

Requirements

4+ years of experience owning complete mechanical or electromechanical systems from initial design through production
Strong fundamentals in structural and thermal engineering
Functional knowledge of electrical systems, including high-voltage battery systems and power electronics
Experience designing large assemblies or complex multidisciplinary systems
Experience with CAD software such as NX, CATIA, or SolidWorks
Experience with analysis and modeling tools such as MATLAB, Simulink, or FEA packages
Strong intuition for manufacturing methods and design-for-manufacturability principles
Practical experience designing, building, debugging, and troubleshooting hardware in production or prototype environments
Ability to move quickly and make sound engineering decisions in ambiguous environments
Clear written and verbal communication skills
Strong time management and prioritization skills
Comfortable working hands-on in the field, including on boats and at shipyards

Nice To Haves

Experience working on commercial vessels or marine systems, including familiarity with Coast Guard and ABS regulations
Experience with high voltage battery systems
Exposure to sheet metal manufacturing, CNC machining, composites, or shop tools
Experience with fluid system design including pump sizing, heat exchanger sizing, and hose/pipe routing
Experience creating detailed engineering drawings with strong GD&T fundamentals
Comfortable pushing at a fast but sustainable pace
Enthusiasm for boating, marine systems, and the water

Responsibilities

Working across mechanical, electrical, thermal, and manufacturing domains
Understanding how assemblies, subsystems, and components interact as part of a larger integrated vehicle.
Driving execution across suppliers, shipyards, manufacturing partners, and internal cross-functional teams.
Owning the design and integration of complex electromechanical systems across the vehicle lifecycle, from concept through production
Driving requirements definition, specifications, CAD design, hands-on prototyping, analysis (FEA, numerical modeling, hand calculations), validation, and production support
Designing with manufacturability, serviceability, reliability, and real-world operating conditions in mind
Building, testing, troubleshooting, and iterating on hardware in fast-moving development environments
Supporting sea trials and in-field validation to verify system performance and resolve real-world issues
Working closely with component suppliers, partner shipyards, manufacturing teams, and vessel operators to drive execution
Traveling occasionally (~15%) to support testing, validation, suppliers, and field operations

Benefits

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