Device Engineer

Background Driven by strong and growing demand for power semiconductor devices, particularly in AI-related applications, improving factory productivity has become an urgent priority.

We are seeking talented engineers who can contribute broadly as Device Engineering / Process Integration Engineers , supporting activities ranging from new technology development and new product introduction to yield/quality improvement of mass production products, process optimization, cost reduction, and troubleshooting.

Responsibilities Roles & Responsibilities In an 8-inch wafer fabrication facility , you will act as a technology owner for Analog IC processes , leveraging expertise in device engineering and process integration to drive development and manufacturing excellence.

• Lead and execute development and transfer projects for new technologies and new products
• Improve product quality and yield through process design and optimization from development through mass production
• Drive continuous improvement of quality, yield, and reliability for existing mass production products, contributing to technology robustness, cost reduction, and productivity enhancement
• Manage manufacturing conditions for production products (Control Plans, FMEA, SPC)
• Perform root cause analysis of issues and implement corrective actions based on risk management, including recurrence prevention (8D, FTA, Why-Why analysis, Risk Assessment, etc.)

Key Relationship

• Direct Report: Manager, Device Engineering Department
• Key Interfaces: Engineers and managers within Aizu Wafer Fab, Global Engineering Teams

Qualifications Qualifications (Required)

• Bachelor’s degree or higher in engineering or a related field

• Experience in device engineering or process integration in a semiconductor wafer fabrication environment (Minimum ~5 years)

• Fundamental knowledge of IC processes, device physics, electrical characteristics/testing, analog IC circuits, and reliability

• Understanding of product specifications (SPEC) and design margin concepts

• Hands-on experience in data analysis (yield, electrical characteristics, defect/failure analysis) and strong problem-solving skills

• Practical experience in identifying root causes and implementing corrective actions for yield loss or performance issues

• Experience leading cross-functional projects involving manufacturing, process engineering, design/product development, quality, and backend operations

• Ability to communicate effectively in English (email and web meetings) with global teams and U.S. headquarters

• Business-level English proficiency (e.g., TOEIC score of ~600 or higher)

• Japanese language proficiency (equivalent to JLPT N2 level or above)

• Valid work authorization that permits employment in Japan at the time of application

• No visa sponsorship available for this position

Preferred Qualifications

• Experience as a technical lead or engineer in new technology development or technology transfer projects
• Experience in semiconductor circuit design, device simulation, or test development
• Knowledge and hands-on experience with semiconductor front-end processes and equipment
• Leadership experience in yield improvement or process optimization projects
• Ability to communicate effectively in technical discussions in English meetings
• Experience working in a multinational or global company environment is a plus
• Experience in driving process optimization and business improvement using AI technologies

Ideal Candidate Profile

• Continuously improves personal skills and can adapt to broader and deeper technical responsibilities
• Understands factory and departmental KPIs and is committed to achieving them
• Demonstrates strong ownership of products/technologies and drives problem-solving and improvements through to completion
• Able to identify root causes and solve problems logically and systematically
• Proactively identifies risks and implements preventive actions through risk assessment
• Effectively communicates and collaborates across teams, influencing and leading stakeholders
• Demonstrates flexibility and a positive attitude toward change and new technologies
• Possesses a customer-oriented mindset and understands on-site realities, making decisions based on overall optimization rather than partial optimization

About Us 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: https://www.onsemi.com/careers/career-benefits

About The Team 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.