Senior SiC EPD Engineer
Bucheon-si, Gyeonggi-do, South Korea
Posted on Aug 20, 2026
The Senior SiC EPD (Early Product Development) Engineer is a key technical role responsible for developing of new products on technologies within their development phase, identifying and addressing device and process weaknesses in early stages of manufacturing phase, advanced analysis and reduction of epitaxial and material-related defects in SiC technologies, enabling high yield, cost competitiveness, and robust device performance for next-generation SiC power MOSFETs.
This position requires strong expertise in device physics, process integration, TCAD simulation, and yield engineering, with the ability to lead complex technical problem-solving activities across cross‑functional teams.
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. |
equired Qualifications
- Master’s degree or higher in Engineering (Electrical Engineering, Materials Science, Physics, Semiconductor Engineering, or related field).
- Strong understanding of material science and device physics, including semiconductor fabrication and electrical characterization principles.
- Solid experience in SiC or HV Silicon device/process development, yield engineering, or defect analysis.
- Strong analytical and problem‑solving skills with the ability to independently drive complex technical issues.
- Strong communication skills in English, both written and verbal, for global collaboration.
- Ability to work with an open mindset, actively communicate, and effectively share technical information across teams.
- Demonstrated technical leadership or mentoring experience.
Preferred Qualifications
- Hands‑on experience with SiC epitaxial or material defect analysis and yield improvement.
- Proficiency in TCAD simulation tools and statistical analysis (DOE, SPC, correlation analysis).
- Experience with power MOSFET device layout and test structure design.
- Prior experience supporting technology ramp‑up or high‑volume manufacturing.
Key Responsibilities
- Plan, manage, and execute engineering lots and DOE activities, ensuring timely data generation and decision making.
- Act as a SiC process integration lead engineer for device development, from technology definition to production ramp.
- Perform yield analysis related to SiC material defects and fab‑induced defects, including epi‑related and process‑induced failures.
- Drive cost and yield analysis for SiC technologies, identifying major cost contributors and yield limiters.
- Provide advanced technical support for production issues, including root‑cause analysis of yield and reliability excursions.
- Lead TCAD simulations to verify and optimize Silicon and SiC device technologies, including electrical performance and process sensitivity.
- Lead cost reduction and yield‑up initiatives through defect reduction, process optimization, and design/process co‑optimization.
- Conduct correlation analysis between PCM electrical data and in‑line process data to identify systematic issues and process sensitivities.
- Utilize layout tools (Cadence Virtuoso) to support device layout review, test structure definition, and design‑process interaction analysis.
- Collaborate closely with Device, Process, Yield, Reliability, Manufacturing, and external partners to ensure robust technology transfer and production sustainability.
- Mentor junior engineers and contribute to building organizational knowledge in SiC EPD and yield engineering.