Full-Time

Mechanical Design Engineer

Diamond Foundry

Diamond Foundry

201-500 employees

Manufactures diamond wafers for thermal management

Compensation Overview

$110k - $140k/yr

California, USA

In Person

On-site in the Bay Area, California.

Category
Mechanical Engineering (1)
Required Skills
CAD
SolidWorks

Get referred to Diamond Foundry

See people who can refer or advise you

Requirements
  • A degree in mechanical, aerospace, or a similar engineering discipline is required. Plus, entry-level to 3 years of professional experience in mechanical design.
  • Understanding and experience with various manufacturing methods with common industrial machine tools. High proficiency in CAD (SolidWorks)
  • An optimistic, creative, and curious mindset with a strong desire to be hands-on with their hardware designs
Responsibilities
  • Collaborate with reactor team members and other teams in the company on new reactor systems, assemblies and parts.
  • Oversee the manufacturing of machined components and guide designs from R&D to production. Perform trades on performance vs. cost to ground design decisions.
  • Design and develop new reactor systems and components, applying expertise in machine design and mechanics, kinematics, thermals, and fluids to the design.
  • Manage the prototyping, documentation, and manufacturing process of reactor designs, including preparing drawings and working with machine shops and vendors to fabricate new hardware
  • Troubleshoot issues on existing reactor designs, working with other engineers to implement design changes that improve productivity and yield of our reactors
Desired Qualifications
  • Prior experience with vacuum system design as found in semiconductor, aerospace, or other manufacturing industries is desired.
  • An understanding of electromechanical components and experience with PLC systems and industrial controls is desirable.
  • A solid foundation in thermal or fluid modeling is desirable.

Diamond Foundry produces single crystal diamond wafers used to improve heat management in high-tech systems. They develop and manufacture semiconductor-grade diamond wafers and related technologies for B2B customers, including AI, EVs, and wireless communications, to help devices run cooler and more efficiently. The wafers leverage diamond's exceptional thermal conductivity to spread and dissipate heat from powerful chips beyond what traditional materials can handle. They differentiate themselves by offering a sustainable, zero-carbon production process and a complete semiconductor-grade tech stack, targeting Tier 1 automakers and other high-tech firms. Their goal is to lead in both advanced materials and environmental sustainability by providing reliable, high-performance cooling solutions for mega tech applications.

Company Size

201-500

Company Stage

Grant

Total Funding

$1.3B

Headquarters

San Francisco, California

Founded

2012

Get referred to Diamond Foundry

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Diamond wafers target thermal bottlenecks in AI, EVs, and wireless.
  • Trujillo’s Spain expansion scales output toward four million carats annually.
  • Public support and investor visibility strengthen financing and procurement credibility.

What critics are saying

  • Semiconductor adoption depends on defect-free wafers, yields, and larger crystal sizes.
  • Lab-grown diamond jewelry faces price compression from expanding synthetic supply.
  • Subsidy dependence and factory ramp delays can burn capital before revenue inflects.

What makes Diamond Foundry unique

  • Proprietary plasma reactors produce single-crystal diamond wafers at mining scale.
  • VRAI gives direct-to-consumer jewelry exposure alongside semiconductor sales.
  • Zero-emission manufacturing supports a sustainability-led brand across both businesses.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

401(k) Retirement Plan

Life Insurance

Disability Insurance

Unlimited Paid Time Off

Paid Vacation

Employee Discounts

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

0%
AS
Dec 28th, 2025
Leonardo DiCaprio backs Spanish diamond chip factory in Trujillo sustainability push

Diamond Foundry, a synthetic diamond manufacturer backed by Leonardo DiCaprio, is establishing a facility in Trujillo, Spain, to produce diamond substrates for high-performance chips. The company, operating since March 2023, uses solar-powered technology to replicate natural diamond formation conditions in laboratory settings. DiCaprio is among several investors supporting the project, which aligns with his sustainability investments. The actor stated he is "proud to invest in Diamond Foundry, a company that reduces human and environmental costs by growing sustainable diamonds." Beyond his business investments, DiCaprio founded the Leonardo DiCaprio Foundation in California, which supports climate resilience, wildlife protection and ecosystem restoration globally. The foundation advocates for Rights of Nature legislation at local, state and international levels, including at the United Nations.

Jeweller Magazine
Dec 2nd, 2025
Diamond Foundry gets €753M Spain boost

Spain's government has invested €753 million in Diamond Foundry's lab-created diamond manufacturing plant in Trujillo, Extremadura, as part of a semiconductor support program. The facility, established in 2023, is projected to receive an additional €1.6 billion by 2029. It will produce around 4 million carats annually, primarily for technology applications. The investment is expected to create over 2,100 jobs, including 500 directly at the factory.

Global Trade Alert
Dec 4th, 2024
Global Trade Alert

A recognised independent monitoring of policies that affect world commerce trusted by many.

PR Newswire
Jun 4th, 2024
Lab Diamonds Now 10X More Energy Efficient Than Mining

Public confused by natural diamond marketing claims to the contrarySAN FRANCISCO, June 4, 2024 /PRNewswire/ -- Diamond Foundry today confirmed that its technological advances have made lab created diamonds ever more environmental: they now require ten times (!) less energy to create than it takes to mine ones already created by Earth.Further, the energy used to create them has zero carbon emissions in Diamond Foundry's production. This compares to the dirtiest Diesel generally used in mining diamond industrially in Africa.Earth takes a lot of pressure over a long time to yield diamond crystal, then mining "just" needs to extract such crystals already formed. So how come forming diamond in a lab from scratch is actually a lot more energy efficient? The reason is that mining is extremely inefficient — a ton of earth has to be moved to yield small quantities of crystals."In truth, it has been since 2017 already that we required less energy per carat than mining – it's just that everyone has kept thinking the opposite because of the misleading marketing by the mining cartel," said Martin Roscheisen, CEO of Diamond Foundry, adding: "Now though, we are at ten times less energy, so it is truly time for everyone to stop saying anything else."Nestled among the apple orchards of America's beautiful Pacific West, Diamond Foundry produces diamonds using zero-emission energy by converting the greenhouse gas methane into diamond using American ingenuity and craftsmanship. Its diamonds are of unquestionable origin – no complicated bureaucracy and "tracing" required.More than half of all diamonds sold in the United States – including engagement rings – are now created in labs rather than mined.Diamond Foundry Inc. is the #1 producer of single-crystal diamond worldwide. For more information see www.DF.comMedia Contact: Lena Nieves, [email protected], 1 (888) 322-4397SOURCE Diamond Foundry

Forbes
Jun 4th, 2023
With Vrai, Diamond Foundry Plans To Make Lab-Grown Diamonds True Luxury

"Diamond Foundry is proving with technology that we can create mining-scale diamond production to . [+] the point that we won’t need mined diamonds anymore,” said Mona Akhavi, Vrai president and CEO. / AFP PHOTO / CHRIS J RATCLIFFE (Photo credit should read CHRIS J RATCLIFFE/AFP via Getty Images)AFP via Getty Images. Couples are increasingly choosing a lab-grown diamond for their all-important diamond engagement ring purchase. The Wall Street Journal reported that more than one-third of U.S. couples chose a lab-grown center stone in 2022, based upon a survey conducted by The Knot among nearly 12,000 engaged couples