3DIC Yield Engineer, Sr. Staff

Company:

Qualcomm Semiconductor Limited

Job Area:

Engineering Group, Engineering Group > ASICS Engineering

General Summary:

Location: Hsinchu, Taiwan (Onsite, 5 days/week)

Must have keywords: 3DIC, Yield Analytics

Nice to have keywords: DRAM, Diagnostics, ML/AI

We are seeking a highly skilled Diagnostics Analytics Engineer to advance data-driven yield learning for advanced 2.5D and 3DIC products. The role involves interpreting a wide range of diagnostic data, including memory bitmaps, scan diagnosis results, TSV and interposer test outputs, and packaging-related failure signatures, to identify patterns and pinpoint likely root causes. A key responsibility is integrating heterogeneous 3DIC test data across wafer, module, and stacked configurations to build clear, actionable insights that guide yield improvement. Experience applying AI-assisted analysis and solutions is a plus.

Key Responsibilities:

Diagnostics Data Analysis

• Analyze large-scale fail data from wafer sort, final test, and module/stack testing to identify systematic and parametric failure trends.
• Interpret memory bitmap diagnostic data across SRAM, embedded DRAM, and stacked DRAM; classify fail modes and correlate with known defect signatures.
• Evaluate TSV/interposer failures, continuity test results, and 3D stack test patterns to detect systematic issues across layers.
• Analyze scan and ATPG diagnosis output, perform clustering of suspected root causes, and support defect mechanism narrowing.

Yield Learning & Correlation

• Correlate diagnostic results with layout, process, fab metadata, packaging steps, and environmental stress factors.
• Identify high-impact failure mechanisms and quantify their impact on yield, DPPM, and reliability.
• Build structured workflows for correlating memory repair data, redundancy usage patterns, and defect densities across multiple lots or product families.
• Provide clear summaries that accelerate root-cause identification for silicon, assembly, and test teams.

Workflow, Tooling, and Automation

• Develop and maintain scripts, dashboards, or utilities to automate analysis of diagnostic results.
• Work closely with internal software teams to improve data pipelines for memory bitmaps, scan diagnosis, and 3DIC test logs.
• Use statistical techniques and selective AI/ML methods where they enhance signal extraction, clustering, or anomaly detection.
• Ensure analysis workflows scale across product ramps and large data volumes.

Cross-Functional Collaboration

• Partner with test engineering, DFT, process technology, packaging, and FA teams to interpret diagnostic data and validate hypotheses.
• Deliver clear visualizations and reports to guide decision-making for yield improvement.
• Participate in cross-functional deep dives on systematic failure mechanisms and propose data-supported next steps.

Minimum Qualifications:

• Bachelor's degree in Science, Engineering, or related field and 6+ years of ASIC design, verification, validation, integration, or related work experience. OR Master's degree in Science, Engineering, or related field and 5+ years of ASIC design, verification, validation, integration, or related work experience. OR PhD in Science, Engineering, or related field and 4+ years of ASIC design, verification, validation, integration, or related work experience.

Preferred Qualifications:

• Master’s or Ph.D. in Electrical Engineering, Computer Engineering, Data Science, or related field.
• Extensive experience in yield analysis, including advanced 2.5D, 3DIC, and DRAM products.
• Strong understanding of semiconductor test results analysis, silicon debug, or memory diagnostics, and scan diagnostics.
• Proficiency in Python or equivalent languages for data analysis and automation.
• Ability to interpret complex test datasets and extract meaningful diagnostic signals.
• Strong English communication skills with ability to present technical conclusions clearly.

Preferred Skills:

• Experience with memory bitmap analysis, memory fail-mode classification, and BIST/BIRA repair data interpretation.
• Familiarity with layout correlation workflows and root-cause narrowing using design/process metadata.
• Understanding of TSV/interposer failure signatures and 3DIC test flows.
• Ability to apply statistical techniques or light ML methods for clustering or anomaly detection.

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