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 Senior Applications Engineer to bridge advanced materials development with real-world hardware applications. This role is highly hands-on and execution-focused, translating technical strategy into experiments, prototypes, and validated performance data that inform both engineering decisions and customer-facing outcomes. You will work closely with the Director of Engineering to execute development plans, troubleshoot technical challenges in real time, and ensure that materials and processes are effectively integrated into functional systems. This position is located in our San Jose office.  RESPONSIBILITIES Technical Execution: Carry out the day-to-day engineering tasks, experiments, and project deliverables aligned with the Director’s technical strategy. Hands-on Assembly & Testing: Support the integration of our materials by executing physical assembly, bonding processes, and performance testing. Data & Reporting: Gather, analyze, and document technical data from tests to provide the Director with the insights needed for customer and executive updates. Problem Solving: Act as the primary troubleshooter when technical issues arise during development, finding practical solutions to keep projects moving forward. Cross-Functional Support: Help coordinate between internal engineering teams and external customer requests to ensure project alignment. REQUIREMENTS Education: Bachelor’s degree in Engineering, Materials Science, or a related technical field. Experience: 5+ years of hands-on experience in hardware engineering, product assembly, or materials testing. Core Skills: Strong background in a lab or testing environment with a proven ability to work with physical hardware and materials. Adaptability: A flexible mindset with the ability to take high-level direction from leadership and turn it into actionable daily tasks. Communication: Clear verbal and written communication skills to effectively collaborate with the Director and internal teammates. 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.