Process Engineer, EPI

Tower Semiconductor Ltd.; San Antonio (TX); On-site; USD 110,000 - 140,000; Full time

Job summary

Tower Semiconductor Ltd. in Texas is seeking a skilled Process Engineer to drive optimization and continuous improvement of Diffusion and Epitaxy (DIFF/EPI) operations. You will own process health, yield optimization, and equipment performance. Collaborate with cross-functional teams to troubleshoot issues, design experiments (DOE), and lead technology transfer.

The role balances hands-on execution with analytical problem solving to meet quality and throughput targets. Required: M.S. or Ph.D.

Qualifications

• MS or PhD in a relevant field, or BS with 5+ years of related experience.
• Minimum of 3 years of professional experience in a semiconductor wafer fabrication environment, with diffusion or epitaxy expertise.
• Proficiency in SPC, FMEA, and standard semiconductor process monitoring software tools.
• Ability to design experiments, analyze data, and summarize findings for technical audiences.
• MS Office Suite proficiency (Excel, Word, PowerPoint) for reporting and data visualization.

Responsibilities

• Take ownership of assigned processes and set direction for improvement and operational excellence.
• Collaborate with process and integration engineers to improve metrics (SPC, yield, parametrics, defects) and enable technology transfers.
• Lead the selection and qualification of semiconductor processing tools.
• Monitor fab performance metrics using SPC and dashboards.
• Conduct root cause investigations of discrepant material and lead yield/defect improvement projects.
• Develop operating specifications and provide technical training to wafer fab personnel.
• Collaborate with equipment engineering to improve uptime, tool utilization, and process flexibility.
• Troubleshoot process and tool excursions to minimize production impact.
• Identify cost-saving opportunities and lead initiatives to reduce operating costs.
• Implement advanced process control methods to improve CpK at critical levels.
• Ensure proper matching and qualification of newly installed equipment for production ramp.
• Develop new semiconductor manufacturing processes using DOE methodology.
• Strengthen fault detection and classification strategies within responsible areas.

Skills

SPC

FMEA

DOE design

Data analysis

MS Office

Experiment design

Statistical analysis

Education

MS or PhD in a relevant field

BS with 5+ years experience

Tools

Semiconductor process monitoring software

Job description

About Tower Semiconductor

Looking for a career path in the high-tech industry? Become part of a team focused on delivering the most exciting semiconductor technology in the world! If you enjoy working with others in a dynamic, fast-paced environment and are looking for an opportunity to grow your career in this exciting industry, then Tower Semiconductor is the place to be!

Tower Semiconductor, the leading foundry of high-value analog semiconductor solutions, provides technology, development, and process platforms for analog integrated circuits to more than 300 customers worldwide across growing markets such as communications, mobile, infrastructure, consumer, industrial, automotive, medical, and aerospace and defense, among others.

Join Tower and become part of a dynamic organization with exceptionally talented and dedicated team members who work collaboratively to provide best-in-class technological solutions to our clients.

Job Description

We are seeking a skilled Process Engineer to drive the optimization, stability, and continuous improvement of our Diffusion and Epitaxy (DIFF/EPI) operations. In this role, you will own the technical integrity of wafer fabrication processes, serving as the primary point of accountability for process health, yield optimization, and equipment performance.

You will act as a key technical resource, collaborating cross-functionally to troubleshoot complex issues, execute process characterization, and lead projects that enhance manufacturing capability. This position requires a balance of hands‑on technical execution and analytical problem-solving to consistently meet our stringent quality and throughput targets.

Key Responsibilities:

• Take ownership of assigned processes, setting the direction for improvement, sustaining performance, and overall operational excellence.
• Partner closely with process and integration engineers to improve key process metrics‑including SPC, yield, parametrics, and defects‑and to achieve first‑pass success on technology transfers.
• Lead the selection and qualification of semiconductor processing tools.
• Monitor fab performance metrics using statistical process control (SPC).
• Conduct root cause investigations of discrepant material and implement yield and defect improvement projects.
• Develop operating specifications and provide technical training to wafer fab personnel.
• Collaborate with equipment engineering to improve uptime, tool utilization, and process flexibility.
• Troubleshoot process and tool excursions to minimize impact on production.
• Identify cost savings opportunities and lead initiatives to reduce overall operating costs.
• Implement advanced process control methods to improve Cpk at critical process levels.
• Ensure proper matching and qualification of newly installed equipment to support production ramp.
• Develop new semiconductor manufacturing processes using design of experiments (DOE) methodology.
• Strengthen fault detection and classification (FDC) strategies within your areas of responsibility.

This Job Is For You If:

• Rewritten "This Job Is For You" section as concise bullet points

Job Requirements

Must Have:

• M.S. or Ph.D. in a relevant field, or a B.S. with 5+ years of related experience.
• Minimum of 3 years of professional experience in a semiconductor wafer fabrication environment, with specific expertise in diffusion or epitaxy processes.
• Demonstrated proficiency in Statistical Process Control (SPC), Failure Mode and Effects Analysis (FMEA), and standard semiconductor process monitoring software tools.
• Demonstrated ability to design experiments, analyze data, and effectively summarize findings for technical audiences.
• Proficiency in MS Office Suite (Excel, Word, PowerPoint) for reporting and data visualization.
• #IND100