Power Electronic Product/Test Engineer - Bay Area, California

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 ...

Job description

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.
Diamond Foundry is seeking a Power Electronics Test Engineer to join our growing team. As a Power Electronic Test Engineer, you will be the technical owner for all high-voltage component and system-level testing, driving continuous improvement for both characterization and production. You will lead the design of test circuits, analyze data, and manage the development and maintenance of test programs and hardware. This role requires a hands-on approach and a problem-solving mindset, as well as excellent communication skills to collaborate with multiple teams and customers.
This position will work out of our San Jose location.

Responsibilities

• OSAT & Design Integration: Collaborate with OSATs on assembly and package design for component- and system-level products, while ensuring all designs satisfy datasheet specifications, DFT (Design for Test), and DFM (Design for Manufacturing) requirements.
• Test System Development: Co-lead the design and development of bench-level characterization systems in partnership with Test Engineering, including troubleshooting and resolving engineering or production issues related to devices, test hardware, and test software.
• Experimental Analysis: Design and execute Design of Experiments (DOE), analyze complex results, and perform in-depth yield and failure analysis for both initial engineering builds and high-volume production to generate comprehensive technical reports.
• Reliability & Qualification: Design, execute, and manage all reliability testing initiatives, coordinating between in-house laboratories and external qualification partners to ensure product integrity.
• Product Lifecycle Management: Own the end-to-end product development timeline and milestones, managing documentation, cost targets, and the successful release to production for all hardware and software components.

Qualifications

• Core Education & Experience: BSEE or MSEE with 5+ years in product development, possessing deep knowledge of power electronics, analog/mixed-signal circuits, and power module datasheets (hands-on, detail-oriented, methodical problem solver—desired).
• Device Expertise & Hardware Skills: Hands-on experience testing power MOSFETs, SiC, and GaN devices using high-voltage test systems (e.g., Eagles, Chroma) and Keysight 1506 or Keithley parametric test systems (comfort in fast-paced, evolving environments—desired).
• Automation & Engineering Tools: High proficiency in bench automation (NI TestStand, LabVIEW, Python, or C/C++) and Altium Designer for schematic/PCB layout, coupled with required Product Lifecycle Management (PLM) experience (strong cross-functional communication—desired).
• Reliability & Compliance: Proven experience in high-power reliability testing and automotive qualification standards like VDA, IATF, and AEC-Q (ability to interface directly with customers, suppliers, and manufacturing partners—desired).
• Data Analysis & Quality: Mastery of large-scale data analysis, including Pareto, Cpk, and test limit definition, with preferred experience in JMP to ensure product quality and yield optimization (customer-focused engineering approach—desired).

$120,000 - $150,000 a year The position is eligible for company shares. Actual compensation may be higher or lower in the range based on various factors, including, but not limited to a candidate's job duties, experience, and expertise. We will also consider higher level candidates and salary will be adjusted accordingly. 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.
Diamond Foundry Inc. is committed to operating in full compliance with all applicable state and federal laws. Our commitment extends to ensuring that our manufacturing and engineering departments adhere to the highest standards of legal and regulatory compliance. Additionally, these departments may have specific physical requirements to ensure the safety and efficiency of our operations. We prioritize the well-being of our employees and strive to create a work environment that promotes both legal compliance and the optimal functioning of our manufacturing and engineering processes.
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. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.