About Amprius
Amprius Technologies (NYSE: AMPX) is a leader in high-energy, high-power lithium-ion batteries built on silicon anode technology. Our SiCore and SiMaxx cells power unmanned aerial systems, aviation and other applications where weight and energy density matter most. Headquartered in Fremont, California, Amprius designs cells in house and produces them through a global network of contract manufacturing partners.
Summary
Amprius Technologies is hiring a hands-on Staff Electrode Process Engineer to own the electrode manufacturing process on our anode and cathode pilot line in Fremont, CA. You will own the four core electrode processes - slurry mixing, coating, calendering, and slitting - and make sure the line delivers in-spec, defect-free electrodes to the cell-assembly line on schedule and at target yield. The role combines day-to-day process ownership (SPC, recipe and parameter optimization, defect reduction) with bringing new electrode equipment online and transferring new recipes from R&D into production. This is a highly visible role reporting to the Pilot Line Manager.
Job Responsibilities
- Own process parameters for slurry mixing, coating, calendering, and slitting on the anode and cathode lines: define and qualify process windows (slurry viscosity and solids, coating die gap and loading, calendered density and thickness, slit width and burr), and release them as specifications, recipes, and SOPs.
- Own first-pass yield and scrap for the electrode process: track yield by step and defect type, build Paretos of in-line defects (cracks, wrinkles, streaks, pinholes, loading and thickness variation, edge
and burr defects), lead root-cause investigations (8D, 5-Why, fishbone), and drive corrective and preventive actions to closure.
- Implement and manage SPC on critical parameters and in-line metrology (areal loading, thickness, moisture, viscosity), and set up data collection so yield and process capability are visible by step, product, and shift.
- Design and run structured experiments (DOE) to optimize mixing, coating, calendering, and slitting parameters against yield, throughput, and electrode performance, in partnership with R&D and cell engineering.
- Make sure the line delivers assembly-ready material: own slit-roll quality, electrode drying and moisture control, roll handling and identification, and the release and handoff of electrodes to the cell-assembly line on schedule.
- Lead new-equipment and new-line implementation for the electrode process: review equipment specifications, support FAT/SAT, run test and qualification builds, and validate for production.
- Lead new product and recipe transfer from R&D to the production line, including trial runs, stabilization of initial quality, and documentation of the final process.
- Lead PFMEAs, control plans, and change control for new or changed processes; qualify changes with capability studies (Cpk, Gage R&R) before release to production.
- Write and maintain SOPs and work instructions for the four core processes; train and mentor electrode technicians and operators; support daily production troubleshooting, including occasional off-shift escalations.
- Work closely with R&D, quality, maintenance, cell assembly, and equipment vendors, and communicate process status, risks, and results clearly to technicians, peers, and leadership.