Semiconductor Test Process Engineer: Yield & Automation

Onsemi; Tarlac City; On-site; PHP 500,000 - 750,000; Full time

Job summary

onsemi is seeking a hands-on Process Engineer in the Philippines to develop, optimize, and sustain semiconductor test processes for high yield and cost-effective production. You will lead test program improvements, define methodologies, and collaborate with Assembly, Design, and Wafer Fab teams to resolve issues.

The role emphasizes debugging test-related issues, driving yield improvements, and maintaining robust test coverage across products with data-driven decision making.

Qualifications

• Bachelor of Science in Engineering, Electronics/Mechatronics, or equivalent.
• Experience in semiconductor manufacturing is an advantage.
• Strong analytical, organizational, planning, and problem-solving skills.
• Proficient with MS Office and data analysis tools.

Responsibilities

• Develop, qualify, and release test processes for new products (NPI to Production transition).
• Define test methodologies, limits, and guard bands based on characterization data.
• Optimize test programs to improve throughput, test time, and cost efficiency.
• Monitor daily test yield performance and identify yield loss drivers.
• Perform Pareto analysis on failures and drive root cause analysis (RCA) and implement CAPA.
• Collaborate with cross-functional teams (Assembly, Design, Wafer Fab) to resolve systemic issues.
• Ensure proper handler/prober interface and test setup optimization by working with equipment engineering to resolve tester hardware issues.
• Implement and maintain SPC controls (UCL/LCL, Cpk, Ppk) for critical parameters and track metrics like yield, test escapes, retest rate, and DPPM.
• Establish control plans and reaction plans for out-of-control conditions.
• Drive test cost reduction initiatives by improving productivity through automation and standardization
• Document test procedures, specifications, and ECNs.

Skills

MS Project

Excel

PowerPoint

Word

Education

Bachelor of Science in Engineering (Electronics/Mechatronics)

Job description

onsemi is seeking a hands-on Process Engineer in the Philippines to develop, optimize, and sustain semiconductor test processes for high yield and cost-effective production. You will lead test program improvements, define methodologies, and collaborate with Assembly, Design, and Wafer Fab teams to resolve issues.

The role emphasizes debugging test-related issues, driving yield improvements, and maintaining robust test coverage across products with data-driven decision making.