Senior Wafer Process Engineer – Photonics & Yield Optimizer

Lumentum; San Jose (CA); On-site; USD 87,550 - 125,050; Full time

Benefits offered by this job

Annual bonus

Equity

Health and welfare benefits

Commission for certain sales roles

Job summary

Lumentum in San Jose, CA seeks an experienced Senior Manufacturing Process Engineer to develop and maintain wafer fabrication processes for compound semiconductors, collaborating with Process Development, Integration, and Product Engineering teams.

You will drive yield improvements, support First Pass Yield and Failure Analysis, and qualify manufacturing steps such as Photolithography, Plating, and Sputtering, while maintaining SPC charts and process documentation.

Qualifications

• BS degree with 8+ years in clean‑room manufacturing; MS/PhD preferred.
• 3+ years of experience in production wafer fabrication and high‑volume manufacturing.
• Experience with III‑V compound semiconductor device fabrication (lasers, photodetectors, integrated photonics).
• Proficient in statistical data analysis tools (JMP, Minitab) and Python.
• Proven ability to execute projects independently.
• Strong collaboration and communication skills across cross‑functional teams.
• Experience with DOE, SPC rules, control charts, and manufacturing operations.
• Ability to handle projects independently and adapt to flexible 24/7 fab support schedule.

Responsibilities

• Develop and maintain fabrication processes for compound semiconductor wafers.
• Support Product Engineering with Yield and Failure Analysis to enhance performance and yield.
• Design, develop, and qualify processes including Photolithography, Plating, Sputtering deposition.
• Maintain processes with emphasis on SPC and sustain yields; improve yield targets.
• Improve manufacturability and defect reduction by working with process engineers.
• Develop and maintain documentation and SPC charts.
• Analyze data and correlate defects with process parameters across areas.
• Perform process development and sustaining engineering for GaAs/InP wafer processes.
• Provide detailed engineering analysis and documentation to support ramp into volume manufacturing.

Skills

Data analysis

Communication

Independent work

Problem solving

Education

BS degree in relevant field

MS/PhD preferred

Tools

Python

JMP

Minitab

DOE

SPC

Job description

Lumentum in San Jose, CA seeks an experienced Senior Manufacturing Process Engineer to develop and maintain wafer fabrication processes for compound semiconductors, collaborating with Process Development, Integration, and Product Engineering teams.

You will drive yield improvements, support First Pass Yield and Failure Analysis, and qualify manufacturing steps such as Photolithography, Plating, and Sputtering, while maintaining SPC charts and process documentation.