Senior Software Engineer – Python Backend & Manufacturing Systems

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 looking for an experienced, communicative Senior Software Engineer to own the data pipelines, internal systems, and APIs that power our real-time manufacturing and R&D operations. What we need from you is deep, production-grade Python expertise and the ability to own a project end-to-end: partnering directly with material engineers, technicians, and hardware engineers to turn ambiguous operational challenges into working production software.

This role will be on-site 5 days a week in either our South San Francisco office or our Fremont, CA office.

• 4+ years of software engineering experience with production Python as your primary language (experience with industrial protocols like MQTT, Modbus, OPC-UA, or PLCs is a strong plus).
• Proven end-to-end project ownership with the ability to define roadmaps, write specs, and execute code independently (experience working in manufacturing, hardware-in-the-loop, or physical R&D environments is a plus).
• Full-lifecycle Python backend expertise across REST APIs, event/data pipelines, and automation scripts (hands-on experience with FastAPI, Flask, or async processing is a plus).
• Exceptional interpersonal and communication skills to run discovery directly with non-software stakeholders like scientists, technicians, and operations teams (experience scoping technical requirements directly from physical shop-floor workflows is a plus).
• Strong querying skills with schema design fundamentals.

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.