Application Engineer for SiC JFET
Bucheon-si, Gyeonggi-do, South Korea
Posted on Jul 15, 2026
The Applications Engineer will be involved throughout the entire product lifecycle, from new product development to post-production technical support. The primary responsibilities include defining development targets and validating the performance of SiC JFET and SiC JFET Cascode (750V/1200V) technologies through comprehensive experimental evaluation.
This role requires hands-on expertise in power electronics lab equipment, including high-voltage power supplies, digital oscilloscopes, electronic loads, and DMMs.
Beyond product evaluation, this position focuses on driving application-oriented technical solutions, contributing to product definition, and establishing application strategies. The engineer will lead design-in activities with key customers, perform application circuit design and validation, and collaborate closely with internal R&D and marketing teams to enhance product competitiveness.
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. |
Requirements:
- Bachelor’s degree (or higher) in Electrical Engineering or related field
- Minimum 4+ years of experience in power electronics or power semiconductor field
- Strong English communication skills (written and verbal)
- Solid understanding of power semiconductor devices such as Si/SiC MOSFETs and JFETs
- Understanding of SMPS (Switching Mode Power Supply) and power conversion systems
- Hands-on experience in power electronics measurement, experiment design, and data analysis
Preferences:
- Experience in application engineering or device characterization in semiconductor or electronics industry
- In-depth knowledge of SiC JFET, cascode structures, and power MOSFETs
- Experience with various power conversion topologies (LLC, PFC, etc.)
- Application experience in Automotive, Industrial, or Renewable Energy sectors
- Customer-facing experience, including design-in or Field Application Engineering (FAE) roles
- Familiarity with technical tools: P-Spice, SIMetrix, MATLAB, TCAD
- PCB design experience using tools such as Allegro or Altium
Role and Responsibilities:
- Contribute technically to achieving Business Unit (BU)’sgoals in the Application team
- Define product specifications for SiC JFET and SiC JFET Cascode devices
- Perform comprehensive experimental validation and data analysis of product performance
- Design and implement customized test circuits and automated test systems for device characterization
- Design and validate evaluation boards tailored to target applications
- Provide customer design reviews and technical support, including design-in activities
- Lead troubleshooting efforts, including root cause analysis and resolution of customer issues
- Develop and deliver collateral materials (datasheets, application notes, user guides, etc.)
- Analyze market and technology trends and benchmark competitor products for SiC JFET and SiC JFET cascode
- Collaborate cross-functionally with R&D, Product Marketing, and Quality teams to improve products and influence roadmap decisions