Senior EPI Engineer for Bucheon Site
Full-time
Bucheon-si, Gyeonggi-do, South Korea
Posted on Sep 28, 2026
We are seeking an experienced EPI Engineer to support the development and optimization of Silicon Carbide (SiC) epitaxy processes for next-generation power semiconductor technologies. The successful candidate will work closely with Process Integration, Device, Production, and Quality teams to improve process performance, yield, reliability, and manufacturability.
onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.
More details about our company benefits can be found here:
| We are committed to sourcing, attracting, and hiring high-performance innovators, while providing all candidates a positive recruitment experience that builds our brand as a great place to work. |
Qualifications
- Bachelor's, Master's, or Ph.D. degree in Semiconductor Engineering, Materials Science, Electrical Engineering, Physics, or a related field.
- Minimum 5+ years of experience in semiconductor process engineering.
- Hands-on experience in epitaxy, CVD, SiC, or wide bandgap semiconductor technologies.
- Strong understanding of semiconductor device physics and manufacturing processes.
- Experience with statistical analysis tools such as JMP or Minitab is preferred.
- Good communication skills in English and ability to work in a global team environment.
- Experience in SiC epitaxial growth and process development.
- Knowledge of failure analysis, process control, SPC, and yield improvement methodologies.
- Experience supporting technology transfer and high-volume manufacturing
Key Responsibilities
- Develop and optimize SiC epitaxy processes for new technology development and manufacturing ramp.
- Analyze process data and identify opportunities for yield, quality, and cost improvement.
- Design and execute DOE (Design of Experiments) and evaluate process performance.
- Investigate process issues and implement corrective actions through root cause analysis.
- Collaborate with cross-functional teams including Device, Process Integration, Reliability, and Manufacturing.
- Support qualification activities and continuous process improvement projects.