JobsSr. Mechanical Engineer, Gearbox
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Sr. Mechanical Engineer, Gearbox

Rivian

Location

Tustin, CA

Type

Full-time

Posted

8/18/2026

Compensation

$107,800 - $134,800 per year

Undergraduate with 5+ Years of Experience
H-1B FY202697.5% approval+60% YoY
👑 Elite sponsor

Job description

The role at Rivian focuses on designing, developing, and validating gearboxes and actuators for electric adventure vehicles. The team is dedicated to innovative solutions and operates in uncharted territories, emphasizing a love for the outdoors and sustainability. Candidates will work closely with electrical engineers and suppliers to integrate and validate gear systems. This position requires a blend of technical expertise in gear design and collaboration with various stakeholders.

Requirements

  • Proven experience designing plastic (injection-molded) gears, including tooth form compensation, backlash management, and material selection.
  • Proficiency in KISSsoft for gear design, calculation, and simulation.
  • Working knowledge of Standard: ISO 1328 gear tolerance classifications.
  • Familiarity with Standard: VDI 2736 plastic gear design and testing guidelines.
  • Experience designing gears for angle sensors or similar rotary position sensor gear trains.
  • Proficient in 3D/2D CAD (Catia V5/V6 preferred) and Multibody dynamics (MBD).
  • Strong knowledge of GD&T and tolerance stack-up analysis.
  • Solid foundation in polymer material properties, injection molding processes, and gear metrology.
  • Familiarity with PLM systems, BOM structuring, engineering changes, and deviation processes.

Responsibilities

  • Design, develop, and validate gearboxes and actuators.
  • Design, develop, and validate plastic gears and gear trains for angle sensors and other mechatronic sensing/actuation applications.
  • Perform gearbox design calculations, tolerance analysis, and tooth form optimization using KISSsoft.
  • Specify and verify gear quality and tolerance requirements in accordance with Standard: ISO 1328.
  • Apply plastic gear design guidelines per Standard: VDI 2736 accounting for shrinkage, thermal expansion, moisture absorption, and wear.
  • Create detailed 3D models of plastic gears, gearboxes, shafts, etc.
  • Collaborate with electrical engineers to integrate gear trains with angle sensors and other position-sensing components.
  • Coordinate injection-molded gear tooling, sampling, and validation efforts with Tier 1 and Tier 2 suppliers.
  • Develop and execute design verification plans and reports (DVP&R) for gear performance, durability, and NVH.
  • Lead and maintain design failure mode and effects analyses (DFMEAs) for gear and sensor assemblies.
  • Prototype and iterate designs using hands-on fabrication, gear metrology, and lab testing to validate functionality.

Benefits

  • Employees at Rivian are often offered comprehensive health, dental, and vision insurance, a 401(k) with company match, ESPP and potential RSU grants, performance bonuses, and generous time off including paid parental and sick leave. Perks can include 24/7 mental-health coaching and therapy, Hinge Health for Anthem enrollees, tuition assistance and professional development, plus on-site food and a wide range of employee discounts on items like computers, mobile phones, home loans, and pet care.

H-1B filing history

Public USCIS petition and DOL LCA counts · latest USCIS FY2026, LCA FY2026

Filing entity: Rivian Automotive Llc

As of Jul 17, 2026

Initial approvals

101

FY2026

Approval rate

97.5%

FY2026

LCA certified

258

FY2026

Entry-level share

3.9%

FY2026

Initial approvals YoY

+60%

Trend

LCA certified YoY

-42%

Trend

Initial approvals by fiscal year

Approval rate by fiscal year

Continuing vs initial approvals

LCA certified positions by quarter

LCA certified positions by fiscal year

Based on public USCIS and DOL filings; not a sponsorship guarantee.

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