Process Engineer, EPI

Tower Semiconductor Ltd.; San Antonio, Northern (TX, KY); Hybrid; USD 110,000 - 140,000; Full time

Job summary

Tower Semiconductor is seeking a skilled Process Engineer to drive optimization, stability, and continuous improvement of DIFF/EPI operations in wafer fabrication. You will own process health, yield optimization, and equipment performance with hands-on and analytical responsibilities.

You will troubleshoot complex issues, conduct DOE-based studies, and lead cross-functional projects to meet strict quality and throughput targets, collaborating with process and equipment teams in a fast-paced

Qualifications

• 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.
• Proficiency in SPC, FMEA, and standard semiconductor process monitoring software tools.
• Ability to design experiments, analyze data, and summarize findings for technical audiences.

Responsibilities

• Own and drive improvement for assigned diffusion/epitaxy processes.
• Collaborate with process and integration engineers to improve SPC, yield, parametrics, and defects.
• Lead selection and qualification of semiconductor processing tools.
• Monitor fab performance using SPC.
• Investigate discrepant material and implement yield/defect projects.
• Develop operating specifications and provide technical training to wafer fab personnel.
• Collaborate with equipment engineering to improve uptime and tool utilization.
• Troubleshoot process and tool excursions to minimize production impact.
• Identify cost savings opportunities and lead cost-reduction initiatives.
• Implement advanced process control methods to improve CpK.
• Ensure matching and qualification of newly installed equipment for ramp.
• Develop new semiconductor manufacturing processes using DOE.
• Strengthen fault detection and classification strategies.

Skills

SPC

DOE

FMEA

Data analysis

MS Excel

Technical training

Education

M.S. or Ph.D. in a relevant field

B.S. with 5+ years of related experience

Tools

SPC software

FDC tools

Process monitoring software

Job description

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.