• Develop and troubleshoot yellow-light cleanroom processes for microlenses and metalenses.

• Design and implement end-to-end UV and thermal nanoimprint lithography processes.

• Develop and optimize photolithography processes, including resist coating, exposure, development and baking.

• Develop wet processes and optimize parameters to achieve precise process-window control.

• Design and execute DOE studies to systematically validate imprint pressure, temperature and time, resist-thickness uniformity and overlay accuracy.

• Use SEM, AFM and white-light interferometry to identify defects and improve process yield.

• Write process SOPs and maintain process-parameter records and a troubleshooting knowledge base.

• Collaborate with upstream and downstream teams on etching, thin-film deposition and other process steps to ensure end-to-end compatibility.

• Bachelor’s degree or above in Microelectronics, Materials Physics, Optical Engineering, Micro/Nanofabrication or a related discipline.

• At least 3 years of relevant experience in semiconductor or optical micro/nanofabrication.

• Strong theoretical knowledge and hands-on proficiency in UV/thermal nanoimprint lithography, photolithography and thermal reflow.

• Familiarity with the full yellow-light process flow, including resist coating, exposure, development and etching.

• Proficiency in SEM, AFM and white-light interferometry.

• A solid foundation in micro/nano-optics; experience fabricating silicon-based lenses or diffractive optical elements is an advantage.

• Strong data-analysis skills and effective cross-functional communication and collaboration.

• Ability to work through multiple R&D iterations and proactively resolve technical challenges.