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Salary
$125k – $165k per year
Location
In office
Seniority
Senior · 4+ years exp
Visa
H-1B filings in 12 months: 11
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 23, 2026. First seen by Alion on Dec 11, 2025. Diamond Foundry scores B on the Alion truth index.

Overview
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Profile match
Headquartered in San Francisco, California, Diamond Foundry is a technology firm that specializes in the production of lab-grown diamonds and high-performance single-crystal diamond wafers. The company leverages zero-emission, proprietary plasma reactor technology to manufacture synthetic gems for the luxury jewelry market as well as diamond substrates for semiconductor applications. Additionally, it supplies ultra-thermal conductivity solutions to optimize power efficiency in advanced microelectronics, electric vehicle systems, and artificial intelligence hardware.

Diamond Foundry is looking for a highly experienced and innovative mechanical design engineer who can lead a number of high-visibility R&D projects within the company’s Reactor Development Group. This individual will be a primary owner for the design and development of Plasma-Enhanced CVD reactor equipment and other systems used in the growth and manufacture of diamond. They must have experience leading multiple projects and teams with a strong track record of success.

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

Requirements

  • A degree in mechanical, aerospace, or a similar engineering discipline is required. Plus, 2 to 7 years of professional experience in mechanical design.
  • Prior experience with vacuum system design as found in semiconductor, aerospace, or other manufacturing industries is desired.
  • Understanding and experience with various manufacturing methods with common industrial machine tools. High proficiency in CAD (SolidWorks)
  • 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
  • An optimistic, creative, and curious mindset with a strong desire to be hands-on with their hardware designs
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