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Mechanical engineer jobs at startups

The hardware side of the portfolio runs on mechanical engineers: structures, thermal, manufacturing, test. Aerospace, defense, and robotics companies post these constantly, and they all collect here.

174 open roles · Search and filter on the board →
Mechanical Systems Design Engineer
Astro Mechanica · San Francisco · Full Time
$135k - $170k View role →
Mechanisms - Aero Control Surfaces
Cowboy Space Corporation · Seattle, WA · Full Time
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Mechanisms - Landing Gear System
Cowboy Space Corporation · Seattle, WA · Full Time
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Mechanisms - Separation System
Cowboy Space Corporation · Seattle, WA · Full Time
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Mechanical Assembly Technician
Anduril Industries · Waltham, Massachusetts, United States
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Mechanical Assembly Technician
Anduril Industries · Lexington, Massachusetts, United States
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Senior Mechanical Engineer
Anduril Industries · Costa Mesa, California, United States
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Mechanical Engineer I, Systems Integration (R5344)
Shield AI · United States · Full Time
$75k - $110k View role →
Mechanical Integration Engineer
Astro Mechanica · San Francisco · Full Time
$90k - $175k View role →
Mechanical Designer
Anduril Industries · Lexington, Massachusetts, United States
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End of Line Mechanical Technician
Saronic Technologies · Austin, TX · Full Time
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Senior Supplier Industrialization Engineer, Deployed Special Projects (Mechanical)
Anduril Industries · Costa Mesa, California, United States
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Sr. Mechanisms Engineer
Cowboy Space Corporation · San Carlos, California · Full Time
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Mechanical Design Engineer, Hands
Mind Robotics · Palo Alto · Full Time
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Mechanical Engineer – Optical Systems (Miami, FL)
Exowatt · Miami, FL · Full Time
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Staff Engineer, Propulsion - Mechanical Design (R5389)
Shield AI · Dallas, Texas · Full Time
$140k - $210k View role →
Electrical / Mechanical Engineer
Ursa Mining · San Francisco, CA · Full Time
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Mechanical Systems Engineer, Gearbox
Astro Mechanica · San Francisco · Full Time
$150k - $225k View role →
Senior Mechanisms Engineer - Electromechanical Actuators
Cowboy Space Corporation · Seattle, WA · Full Time
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Battery Mechanical Engineer
Anduril Industries · Costa Mesa, California, United States
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Senior Battery Mechanical Engineer
Anduril Industries · Costa Mesa, California, United States
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Senior Mechanical Design Engineer
Northwood Space · Torrance, CA · Full Time
$100k - $175k View role →
Manager, Mechanical Engineering
Anduril Industries · Irvine, California, United States
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Senior Manager, Mechanical Engineering
Anduril Industries · Irvine, California, United States
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Senior Mechanical Engineer, Intelligence Systems
Anduril Industries · Santa Ana, California, United States
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Mechanical Engineer, Motor Design - 2026 New Graduate
Radiant · El Segundo, CA · Full Time
$95k - $105k View role →
Senior Mechatronics Engineer, Electro-Mechanical (PCB design + Motors/Actuation)
Anduril Industries · Costa Mesa, California, United States
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Engineer II, Mechanical (R5310)
Shield AI · Dallas, Texas · Full Time
$90k - $135k View role →
Senior Test Engineer, Mechanical/Fluids
Radiant · El Segundo, CA · Full Time
$134k - $185k View role →
Mechanical Engineer
Anduril Industries · Costa Mesa, California, United States
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Mechanical Build Engineer
Saronic Technologies · Franklin, LA · Full Time
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Data Center Research & Development Engineer, Mechanical - Industrial Compute
OpenAI · San Francisco · Full Time
$260k - $385k View role →
Mechanical Engineer, Maritime
Anduril Industries · Costa Mesa, California, United States
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Mechanical Engineer II, Systems Integration (R5344)
Shield AI · United States · Full Time
$88k - $130k View role →
Staff Engineer, Mechanical & Actuated Systems (R5293)
Shield AI · Dallas, Texas · Full Time
$130k - $200k View role →
Test Engineer, Mechanical/Fluids
Radiant · El Segundo, CA · Full Time
$107k - $146k View role →
Senior Mechanisms Engineer
Northwood Space · Torrance, CA · Full Time
$136k - $218k View role →
Sr. TCA Mechanical Design Engineer
Cowboy Space Corporation · Seattle, WA · Full Time
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Senior Mechanical Engineer, Production - Connected Warfare
Anduril Industries · Costa Mesa, California, United States
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Lead Mechanical Engineer, Hardware Test (X-BAT) (R5271)
Shield AI · Dallas, Texas · Full Time
$128k - $190k View role →
Senior Mechanical Design Engineer
Astro Mechanica · San Francisco · Full Time
$150k - $225k View role →
Mechanical Engineer
Applied Intuition · Sunnyvale · Full Time
$110k - $200k View role →
Manufacturing Mechanical Engineer
Sesame · San Francisco · Full Time
$175k - $280k View role →
Mechanical Engineer
Mariana Minerals · San Francisco HQ · Full Time
$140k - $175k View role →
Mechanical Maintenance Technician
Mariana Minerals · San Francisco HQ · Full Time
$45 - $55/hr View role →
Mechanical Design Engineer
Hadrian · Los Angeles, CA · Full Time
$165k - $220k View role →
Mechanical Design Engineer
Base Power Company · Austin, TX · Full Time
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Mechanical Operator
Standard Nuclear · Oak Ridge, TN
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Senior Mechanical Manufacturing Engineer, Dive-XL
Anduril Industries · Quonset, Rhode Island, United States
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Staff Global Supply Manager, Mechanicals
Skydio · Taiwan · Full Time
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Senior Mechanical Engineer, Thermal Analysis
Anduril Industries · Lexington, Massachusetts, United States
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Senior Mechanical Engineer, Mechanisms
Northwood Space · Torrance, CA · Full Time
$136k - $218k View role →
Commercial HVAC/R & Mechanical Systems Technician, Maritime
Anduril Industries · Santa Ana, California, United States
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Senior Mechanical Engineer, Subsystem Integration and Test
Anduril Industries · Costa Mesa, California, United States
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Senior Mechanical Engineer, Components and Propulsion
Anduril Industries · Costa Mesa, California, United States
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Mechanical Engineer, Subsystem Integration and Test
Anduril Industries · Costa Mesa, California, United States
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Mechanical Engineer, Components and Propulsion
Anduril Industries · Costa Mesa, California, United States
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Electro-Mechanical Engineer, Radar
Anduril Industries · Broomfield, Colorado, United States; Fort Collins, Colorado, United States
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Senior Mechanical Engineer, Mechanisms
Radiant · El Segundo, CA · Full Time
$134k - $185k View role →
Lead Mechanical Engineer - Structures (Austin, TX)
Exowatt · Austin, TX · Full Time
$150k - $215k View role →
Lead Mechanical Engineer - Heat Exchangers (Austin, TX)
Exowatt · Austin, TX · Full Time
$180k - $215k View role →
Senior Manufacturing Engineer, Mechanical
Anduril Industries · Quonset, Rhode Island, United States
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Senior Manager, Mechanical Engineering - Avionics (R4416)
Shield AI · San Diego, California · Full Time
$185k - $278k View role →
Mechanical Engineer, Soft Goods Design
OpenAI · San Francisco · Full Time
$266k - $295k View role →
Senior Mechanical Engineer, Advanced Targeting & Sensing Systems
Anduril Industries · Costa Mesa, California, United States
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Senior Electro-Mechanical Test Engineer
Anduril Industries · Costa Mesa, California, United States
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Senior Mechanical Engineer
Anduril Industries · McHenry, Mississippi, United States
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Electro-Mechanical Test Engineer
Anduril Industries · Costa Mesa, California, United States
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Mechanical Engineer, Sensing
OpenAI · San Francisco · Full Time
$266k - $310k View role →
Mechanical Design Engineer
OpenAI · San Francisco · Full Time
$295k - $380k View role →
Senior Engineer, Mechanical Test (R5207)
Shield AI · Dallas, Texas · Full Time
$110k - $160k View role →
Mechanical Design Engineer
ZeroMark · New York, NY · Full Time
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2027 Mechanical Engineer Intern
Anduril Industries · Atlanta, Georgia, United States; Boston, Massachusetts, United States; Costa Mesa, California, United States; Irvine, California, United States; Reston, Virginia, United States; Seattle, Washington, United States
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2027 Early Career Mechanical Engineer
Anduril Industries · Atlanta, Georgia, United States; Boston, Massachusetts, United States; Costa Mesa, California, United States; Irvine, California, United States; Reston, Virginia, United States; Seattle, Washington, United States
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Senior Mechanisms Engineer
Radiant · El Segundo, CA · Full Time
$134k - $185k View role →
Senior Manager, Battery Mechanical Engineering
Anduril Industries · Costa Mesa, California, United States
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Mechanical Engineer, Fluid Systems - 2026 New Graduate
Radiant · El Segundo, CA · Full Time
$105k - $125k View role →
Senior Mechanical Engineer, Surveillance Tower
Anduril Industries · Irvine, California, United States
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Senior Engineer, Mechanical Test (R5091)
Shield AI · Dallas, Texas · Full Time
$110k - $160k View role →
Senior Mechanical Engineer, Omen
Anduril Industries · Costa Mesa, California, United States
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Mechanical Technician, Launch Team
Anduril Industries · Ashville, Ohio, United States
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Intern, Mechanical Engineer (Fall term)
Heron Power · Scotts Valley · Full Time
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Mechanical Engineer, Power Electronics
Heron Power · Scotts Valley · Full Time
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Senior Mechanical Engineer
Arc Boat Company · Torrance, CA
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Principal Mechanical Engineer
Saronic Technologies · Austin, TX · Full Time
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Mechanical Design Engineer
Northwood Space · Torrance, CA · Full Time
$95k - $129k View role →
Mechanical Engineer, Fluid Systems
Radiant · El Segundo, CA · Full Time
$108k - $150k View role →
Senior Mechanical Engineer, Counter Intrusion
Anduril Industries · Irvine, California, United States
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Mechanical Engineer, Lead
Anduril Industries · Costa Mesa, California, United States
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Senior Engineer, Mechanisms - Catapult (R4939)
Shield AI · Dallas, Texas · Full Time
$112k - $169k View role →
Engineer II, Mechanical Test (R4935)
Shield AI · Dallas, Texas · Full Time
$88k - $132k View role →
Engineer II, Mechanical Design (R4922)
Shield AI · Dallas, Texas · Full Time
$88k - $132k View role →
Mechanical Engineer, Production - Connected Warfare
Anduril Industries · Costa Mesa, California, United States
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Staff Mechanical Engineer, Fluid Systems
Radiant · El Segundo, CA · Full Time
$201k - $314k View role →
Senior Mechanical Engineer, Fluid Systems
Radiant · El Segundo, CA · Full Time
$158k - $219k View role →
Staff Mechanical Engineer, Systems Integration
Shield AI · San Diego, California · Full Time
$138k - $200k View role →
Mechanical Design Engineer, Tactile Sensing
Mind Robotics · Palo Alto · Full Time
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Field Mechanical Technician, Counter Intrusion
Anduril Industries · Costa Mesa, California, United States
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Senior Supplier Quality Engineer, Mechanical Subassembly / Composites
Anduril Industries · Costa Mesa, California, United States
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Director, Global Supply Management - Mechanicals
Skydio · San Mateo, California, United States · Full Time
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Roles here come straight from each speedrun portfolio company and refresh daily. Prefer warm intros over cold applying? Join the speedrun talent network: one signup, and we route you to the founders most likely to need you.