Senior Principal Test Development Engineer

Position Summary JOB DESCRIPTION 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

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.