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Obvious Ventures is located in the heart of the Presidio in San Francisco. Our entrance is on Graham Street, just north of the SFFD Fire Station. When you see WWII ballistics and cannonballs, you’re in the right place. Walk through the double doors, turn right, and head to the end of the hall. Suite 120 is the last office on the left.

220 Halleck Street,
Suite 120 San Francisco,
CA 94129 USA

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Senior/Principal Polishing & Cleaning Process Development Engineer

Diamond Foundry

Diamond Foundry

Fremont, CA, USA
Posted on Tuesday, April 18, 2023
Diamond Foundry Inc. is the global leader in single-crystal diamond technology. We produce single-crystal diamond (SCD) wafers by crystallizing greenhouse gas into diamond using proprietary plasma reactors powered by zero-emission energy. Founded in 2012 in San Francisco, California by Stanford/M.I.T./Princeton engineers, Diamond Foundry Inc. received $315MM in funding and has had a multi-year track record of profitable fast growth.
We are looking for an ambitious, experienced and hands-on Process Development Engineer to take responsibility for investigating Polishing and Cleaning manufacturing processes and technologies that will help us make our diamond surface finishing technology even better. You'll be an integral part of an experienced team of mechanical, electrical, and materials engineers, and will be encouraged to gain experience in a variety of techniques and areas. The position in our Fremont facility will involve hands-on work with Polishing and Cleaning manufacturing equipment as well as design, execution, and interpretation of experiments.


  • Personally operating, collecting data, and analyzing performance of Surface Finishing equipment.
  • Assembling and implementing R&D equipment modifications and experimental materials and consumables for testing.
  • Setting up experimentation and testing for a variety of physical and material processes, using instrumentation such as WLI, AFM and more to determine performance of various tools and processes.
  • Generate DOE plans for prototype processes, guide process implementation into production. Leverage statistical analysis to provide data driven feedback.
  • Effectively communicating results and recommending course of action.
  • Working across multidisciplinary teams to attack challenges ranging from demonstration of capability to production deployment.


  • Ph.D. or Master degree in physical science and engineering with 10+ years of relevant experiences in wafer Polishing and Post Polish Cleaning.
  • Knowledge of Polishing and Cleaning manufacturing equipment and associated components (Plates, Pads, Conditioning disks, Slurry and cleaning solution formulations etc.)Experience with Surface Measurement Metrology equipment, WLI, AFM.
  • Experience with Surface defect characterization Inspection Equipment.
  • Experience in statistical data analytics and process control (DOE, SPC) and hands-on experience with Polishing & Cleaning setups.
  • Effective at communicating data through text, graphics, and images to audiences of all experience levels.
  • Expert in data collection and analysis / interpretation, as well as presentation of experimental findings (e.g. JMP)
  • Effective communication and ability to thrive in a cross-functional development team.
Diamond Foundry believes in supporting our employees from the workplace to their personal and home life. We provide eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. Perks include employee discounts to VRAI and catered lunches for onsite staff. All benefits offered are available starting your first day.
Diamond Foundry is an Equal Opportunity Employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, veteran status, or any other protected factor under federal, state or local law.
This employer participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.
If E-Verify cannot confirm that you are authorized to work, this employer is required to give you written instructions and an opportunity to contact Department of Homeland Security (DHS) or Social Security Administration (SSA) so you can begin to resolve the issue before the employer can take any action against you, including terminating your employment.
Employers can only use E-Verify once you have accepted a job offer and completed the Form I-9.