Principal Analog Engineer - Sustaining Product Engineer

About the role

Renesas Electronics is looking for a Principal Analog Engineer for Sustaining Product Engineer in Seoul. The role sustains and continuously improves discrete power MOSFET products throughout their production lifecycle, driving manufacturing yield, customer quality support, cost optimization, process transfers and long-term reliability for automotive and industrial power semiconductor applications. The position is full-time.

Key responsibilities

• Own sustaining engineering for released Discrete MOSFET products in mass production
• Improve yield through electrical data analysis, defect signature identification, root-cause investigation and corrective actions
• Lead customer return investigations and failure analysis, coordinating corrective and preventive actions across global teams
• Run cost reduction initiatives such as test optimization, assembly yield, wafer cost and scrap reduction
• Support product qualifications, PCNs, process changes, technology migrations and manufacturing transfers
• Monitor manufacturing indicators, parametric trends, reliability data and outgoing quality metrics
• Resolve cross-functional issues across wafer fabrication, assembly, test, reliability and customer applications
• Support EOL activities, last-time-buy planning and risk mitigation
• Provide technical leadership to global manufacturing sites and act as escalation point for sustaining issues
• Maintain product history, lessons learned and sustaining best practices

Required profile

• Bachelor's degree in Electrical Engineering, Electronics Engineering, Materials Science, Physics or a related field; Master's preferred
• 15+ years of semiconductor industry experience, with a strong background in Discrete MOSFET products
• Proven experience at leading semiconductor companies such as Infineon, onsemi, Vishay, AOS, ROHM, Toshiba, Nexperia, STMicroelectronics or Renesas
• Strong knowledge of automotive and industrial quality requirements
• Experience supporting customer escalations and technical issue resolution

Required skills

• Yield analysis, device characterization, statistical process control and failure analysis
• Semiconductor wafer fabrication, assembly, packaging and final test processes
• Analysis of ATE data and production electrical distributions
• Data analysis tools such as JMP, Python, SQL or Excel
• Preferred: AEC-Q101 qualification experience, familiarity with power packages (DFN, PQFN, LFPAK, DPAK, etc.) and experience with Asian wafer fabs and OSAT partners