Principal Semiconductor Materials Engineer

Diamond Foundry Inc. is solving the thermal limitation at the foundation of today's most exciting tech industries -- AI & cloud compute, electric-car power electronics, and 5G/6G wireless. We have managed to produce the world's first single-crystal diamond wafers and are now on a mission to put a diamond behind every chip. We are the rare unicorn that has grown fast and profitably.

We received $515m in funding and are executing a multi-$B expansion plan for one of the greenest forms of tech manufacturing: converting greenhouse gas into diamond wafers using zero‑emission energy.

We are seeking a hands‑on Semiconductor Materials Engineer to design, fabricate, and characterize advanced semiconductor devices in a highly collaborative lab environment. This role is rooted in cleanroom experimentation, thoughtful iteration, and a deep understanding of semiconductor materials & device physics. The ideal candidate is curious, self‑driven, and motivated by ownership and impact – someone who enjoys working closely with teammates, taking responsibility for device performance, and tackling technical challenges, including materials integration for high‑power and RF device applications.

• Design and optimize semiconductor materials & associated device structures with a strong focus on fabrication feasibility, process integration, and performance
• Lead and collaborate with engineers in the cleanroom to fabricate devices and associated test structures
• Drive design‑fabrication‑characterization iteration cycles by adapting processes and designs based on experimental results
• Define, execute, and refine in‑depth electrical characterization of fabricated devices to understand underlying carrier dynamics
• Analyze, interpret, and report device measurement data to identify performance‑limiting mechanisms and guide improvements

• MSc or PhD in Materials Science, Physics, Electrical Engineering, or a related field, with 4+ years of experience designing, fabricating, and characterizing semiconductor devices
• Extensive hands‑on experience with semiconductor microfabrication (layout experience required i.e. L‑Edit, K‑Layout, etc), including ownership of fabrication processes in a cleanroom environment
• Deep understanding of semiconductor device physics, including transport mechanisms, interfaces, and reliability
• Strong expertise in device characterization and experimental data analysis; experience with device modeling or simulation (e.g., TCAD, COMSOL, ANSYS) is a plus
• Ability to work effectively in a collaborative, inclusive, and accountability‑driven team environment, with excellent interpersonal and communication skills, and a proactive, self‑directed approach to work

$150,000 - $180,000 a year

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. Our benefits begin as early as your first day of employment. Medical and vision coverage are retroactive to your start date, while dental and voluntary benefits take effect once you’ve completed your enrollment.

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.

Manufacturing and Engineering Departments

Physical Requirements:

• Use appropriate PPE and follow all safety policies, practices, and procedures.
• This position will often:
  Sit, stand for long periods, walk, grasp, reach with hands and arms, lift below and above shoulders, bend, twist at the waist, climb, balance, stoop, squat, kneel, crawl, talk, hear, see, use fine finger manipulation, and complete repetitive motions.
• Some tasks may require the use of ladders or stairs.
• Some tasks may require driving or the use of foot controls.
• Lift/carry and push/pull up to 50 pound.

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.