Senior Principal Test Development Engineer
Job description
Position Summary
The Senior 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.
Responsibilities
Key Responsibilities
Technical Leadership
- 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.
Qualifications
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
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.