Senior Diffusion Process Engineer
On-siteAustin, Texas, United States
Job Summary
Support thermal doping process integration across the G2 solar cell fab, driving process characterization, DOE execution, and data analysis to improve dopant uniformities and throughput. Troubleshoot process excursions and equipment issues on diffusion tools, identifying root causes and implementing corrective actions while collaborating with equipment engineers and tool vendors to qualify new tool integrations. Develop and maintain detailed process documentation, including recipes, SOPs, and control plans, and optimize performance through statistical process control and lead OEM work inspection development. Support technology transfer from development to high-volume manufacturing, partnering with cross-functional teams to meet cell efficiency and production targets.
Required Qualifications
- Bachelor's degree or higher in Chemical Engineering, Materials Science, Electrical Engineering, Physics, or a related field
- 5+ years of process engineering experience in semiconductor, photovoltaic, or advanced manufacturing environments
- Hands-on experience with high temperature diffusion toolsets
- Strong working knowledge of ion implantation processes and diffusion thermal tools
- Experience with DOE methodology, statistical process control (SPC), micron-level physical inspection and optical/electrical characterization
- Proficiency with Python, SQL, JMP, and Excel for process monitoring and optimization
- Strong documentation skills and experience reviewing P&IDs, leading change order processes, writing SOPs, process specs, and engineering reports
- Ability to support a fab environment, including occasional travel to the G2 facility as needed
Desired Qualifications
- Experienced working in a clean room setting
- Driven by a strong understanding of thermodynamics, transport phenomenon, vacuum systems, electron-hole physics (Hall effect), and thin film characteristics
- Deep experience working with high temperature (500 C+), high volume manufacturing equipment with silicon or glass material inputs
- Comfortable with chemical characterization including crystal lattice chemistry, quantum field effects, and the principles of oxidation/reduction in gaseous environments; especially considering an application in photon-electron interfaces
- Experienced with III-V, GaAs, PERC, TOPCon or other silicon based solar cells
- Data-driven in your approach to process development and troubleshooting — you let the numbers lead
- Able to work effectively in a fast-moving fab environment where priorities shift and deadlines are real
- A strong collaborator who can work across engineering disciplines and communicate technical findings clearly to varied audiences
- Energized by the challenge of building something new and scaling it to high-volume production
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