Probe Engineer

Key Responsibilities

1.Own and maintain wafer probe (CP) test specifications, limits, and methodologies for MEMS microphone products across development and high-volume production.

2.Analyze wafer probe data using statistical methods to:

o Define and refine test limits and guardbands

o Monitor Cp/Cpk, distributions, and parametric drift

3.Monitor and manage:

o Wafer yield performance

o Identify abnormal wafer maps, outliers, and distribution shifts

o SBL (Statistical Bin Limits) and SYL (Statistical Yield Limits)

4.Work closely with foundry to:

o Review probe data and ensure test integrity

o Monitor daily production trends and address issues promptly

5.Support both New Product Introduction (NPI) and sustaining products:

o Analyze characterization data

o Define initial test limits and continuously refine based on production data

6.Maintain and support probe hardware and setup:

o Work with Cascade probers and Keysight B1500

o Ensure measurement repeatability, stability, and data integrity

7.Develop and use automation tools (Excel VBA, Python, or equivalent) to:

o Analyze large datasets efficiently

o Generate wafer maps, trend charts, and automated reports

8. Prepare clear technical reports and communicate findings to internal teams and management.

9. Drive test time reduction and cost optimization by analyzing high-volume wafer probe data and performing correlation and sensitivity studies to identify redundant or low-value test parameters, and implement optimized test flows without compromising product quality or yield integrity.

Requirements

1. Bachelor’s or Master’s degree in Electrical / Electronic Engineering or related field.

2. 3–5+ years of experience in:

o Wafer probe / CP / parametric testing

o Semiconductor or MEMS products

3. Hands-on experience with:

o Cascade probers

o Keysight B1500 (or similar parametric measurement systems)

4. Solid understanding of:

o Parametric testing (IV, leakage, resistance, capacitance, etc.)

o Wafer-level data analysis and yield interpretation

5. Strong knowledge of statistical methods:

o SPC, Cp/Cpk

o Distribution analysis and outlier detection

o Practical experience in data-driven test limit setting

6. Experience with:

o SBL / SYL implementation and monitoring

7. Basic programming/scripting skills:

o Excel VBA, Python, or equivalent

8. Basic understanding of semiconductor manufacturing processes; familiarity with MEMS device characteristics is an advantage.

9. Strong analytical and problem-solving skills with attention to detail.

10. Fluent in Chinese and the ability to work independently to effectively manage China foundry interactions.

11. Good communication skills for cross-functional collaboration.