About this role
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
Principal Test Development Engineer is a recognized technical leader responsible for defining and driving advanced test solutions for PSG's next-generation power semiconductor portfolio, including Silicon (Si), Silicon Carbide (SiC), IGBT, and Gallium Nitride (GaN) technologies.
This role provides strategic and technical leadership across wafer sort, die-level test, package final test, and power module test development. The successful candidate will lead the development of robust, cost-effective, and scalable test solutions that support product qualification, manufacturing ramp, yield optimization, and long-term business growth.
The position requires deep expertise in power semiconductor testing, mixed-signal product development, statistical data analysis, and cross-functional collaboration with Design, Product Engineering, Quality, Operations, and Manufacturing teams across multiple global sites.
Key Responsibilities
Technical Leadership
• Provide technical leadership and mentorship for a global team of test development engineers. • Support PSG test technology roadmap implementation for next-generation power devices and intelligent power solutions. • Drive test architecture decisions from product concept through high-volume manufacturing. • Establish best practices, methodologies, and reusable test platforms across PSG product families.
New Product Development (NPD)
• Lead test development activities for new products including: • Power MOSFETs • IGBTs • SiC MOSFETs • SiC Modules • GaN Discrete Devices • Intelligent Power Modules (IPM) • Driver + Power MOSFET integrated solutions • Mixed-signal power products
• Support product characterization, qualification, reliability stress testing, and production release. • Partner with Design and Product Engineering teams to ensure Design-for-Test (DFT) and manufacturability objectives are achieved.
Test Development
• Architect and develop wafer sort and final test solutions. • Design and implement: • Test hardware • Load boards • Probe cards • Interface boards • Socket solutions • Automated test software
• Define optimized multisite test strategies for cost reduction and throughput improvement. • Develop test methodologies for high-voltage, high-current, fast-switching power semiconductor devices.
Mixed-Signal & Driver Products
• Lead test solution development for mixed-signal power products including: • Gate drivers • Driver + MOSFET combinations • Intelligent power devices • Protection and control functions
• Develop methodologies for analog, digital, timing, and power parametric testing. • Collaborate with IC Design teams on production test coverage and fault screening strategies.
Data Analytics Skill
• Advanced statistical methods to drive data-based decisions.
Education
• Bachelor's degree in Electrical Engineering, Electronics Engineering, Physics, or equivalent. • Master's degree preferred.
Experience
• Minimum 10+ years of semiconductor test engineering experience. • Minimum 5+ years of direct test development experience. • Proven experience in power semiconductor products including Si, SiC, IGBT, and/or GaN technologies. • Demonstrated technical leadership in NPI and production test deployment.
Technical Skills
Strong Expertise In
• Wafer Sort Development • Final Test Development • Die-Level Characterization • Power Module Testing • Mixed-Signal Testing • Power Discrete Testing • Product Characterization • Statistical Analysis • Yield Optimization • Root Cause Analysis
Preferred ATE Platforms
• Teradyne ETS Series • Advantest Platforms • Cohu / Multitest • Accotest Platforms • Equivalent high-power semiconductor test systems
Programming & Data Analytics
• C/C++ • Python • VBA / Automation Scripting • SQL • JMP • Minitab • Power BI • Advanced Excel Analytics
Laboratory Skills
• Oscilloscope • Power Analyzer • Curve Tracer • Function Generator • High-Voltage Characterization Equipment • Double-Pulse Test Systems
Leadership Competencies
• Strategic technical thinker • Strong system-level problem-solving skills • Excellent project management capability • Strong communication and stakeholder management skills • Effective cross-functional influence without direct authority • Ability to lead global and multicultural teams • Data-driven decision maker
Preferred Experience
Candidates with experience in one or more of the following will have a strong advantage:
• SiC MOSFET and module development • GaN device testing and characterization • Driver IC and analog mixed-signal product testing • Automotive and industrial power products • High-voltage power module test development • AI-assisted engineering analytics
Test methodology standardization across global manufacturing sites