Materials Process 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.

Diamond Foundry is looking for a Materials Process Engineer to help develop and scale processes for a proprietary advanced material used in our diamond manufacturing. You will work hands-on across the process: molding and extruding the material, characterizing its properties, and engineering its interfaces with diamond and glass substrates. It’s a rare early-career chance to take a novel material from lab experiments to high-volume production, working alongside laser, optical, and manufacturing engineers.

This role will be located in Fremont, CA, and will require this candidate to be on-site 5 days a week.

Responsibilities

• Run moderate-temperature molding processes and help design and fabricate molds, tuning temperature, pressure, and surface finish to reduce defects
• Run extrusion trials and measure how temperature, pressure, and die design affect flow, surface quality, and dimensional consistency
• Characterize the material’s thermal, optical, and flow properties before and after processing, and track how they change over reuse cycles
• Clean and functionalize diamond and glass substrate surfaces (e.g., plasma treatment) and evaluate adhesion and interface quality
• Run designed experiments and turn the data into process improvements, documenting them in SOPs and following EHS practices for toxic materials

Requirements

• BS or MS in Materials Science, Chemical Engineering, Physics, Chemistry, or a related field; entry-level (0-2 years, internships included)
• Internship or direct lab experience in glass characterization or molding, ideally with chalcogenide or other specialty glasses
• Familiarity with moderate-temperature processing such as glass or polymer molding and extrusion, plus surface treatment and safe handling of toxic materials
• Experience characterizing thermal, optical, and structural properties (e.g., DSC, viscometry, UV-Vis, FTIR, XRD, SEM/EDS), using designed experiments, and analyzing data in JMP, Python, or Google Sheets