Staff Mechanical Engineer, Powertrain Engineering (Marine)

Location: Full-time, on-site role in Torrance, California, at the Los Angeles headquarters. Occasional travel of approximately 15% is required for testing, validation, suppliers, and field operations.

Base salary: $185,000 annually, plus equity grants and semi-annual impact-based bonuses.

Company

Arc is electrifying the marine industry by developing electric powertrains, software, and vessel platforms for consumer, commercial, tug, ferry, and defense applications.

What you will do

• Lead the development of complex electromechanical systems across multiple vessel programs from concept through production.
• Own high-voltage, high-power distribution architecture across mechanical, electrical, thermal, and manufacturing domains.
• Direct packaging of high-voltage assemblies, including power conversion cabinets and AC distribution systems, for manufacturability, serviceability, and marine conditions.
• Establish methods and standards for busbar design, thermal sizing, structural analysis, shock and vibration analysis, and harness and fluid routing.
• Drive requirements, technical scope, design decisions, and trade-offs while identifying blockers early.
• Mentor engineers and lead technical collaboration with suppliers, shipyards, manufacturing teams, vessel operators, and field-testing teams.

Requirements

• Bachelor’s degree in Mechanical Engineering or a related engineering field.
• 8+ years of experience owning complete mechanical or electromechanical systems from initial design through production, including technical leadership of multidisciplinary systems.
• Strong knowledge of high-voltage electrical systems, power electronics, HV enclosure and busbar design, structural engineering, and thermal engineering.
• Experience with CAD tools such as NX, CATIA, or SolidWorks, and analysis tools such as MATLAB, Simulink, or FEA packages.
• Deep expertise in manufacturing methods, design for manufacturability, hardware prototyping, production debugging, and troubleshooting.
• Experience mentoring engineers, communicating technical trade-offs, and working hands-on in the field, including on boats and at shipyards.

Nice to have

• Experience with commercial vessels or marine systems, including Coast Guard and ABS regulations.
• Experience with fluid system design, high-voltage batteries, power conversion, or power distribution integration.
• Experience with sheet metal manufacturing, CNC machining, composites, shop tools, GD&T, NX, or Teamcenter.
• Enthusiasm for boating, marine systems, and the water.

Culture & Benefits

• Healthcare benefits with 99% employer-paid medical, dental, and vision coverage.
• 14 weeks of fully paid parental leave, competitive PTO, life insurance, disability insurance, and traditional and Roth 401(k) access.
• $500 annual water fund, $500 annual professional development reimbursement, monthly AI stipend, and annual safety equipment reimbursement.
• Captain training and access to Arc boats, plus daily lunches, snacks, and coffee while onsite.
• Relocation assistance may be available depending on role eligibility.
• Values include ownership, empathy, humility, pragmatism, and inclusion.

Hiring process

• Interview discussions include alignment with Arc’s values and opportunities to discuss the company’s working principles.