Senior Product & Yield Device Engineer

Primary Responsibilities

Product-Level Technical Ownership

•             Own yield, variability, and device performance across all manufacturing stages for assigned products.

•             Lead deep technical investigations into complex yield limiters involving epitaxy, wafer processing, device architecture, inspection, and test systems.

•             Develop physics-based hypotheses and validate them through structured DOE, statistical modeling, and experimental execution.

•             Drive yield recovery plans from problem identification through verified improvement.

•             Serve as the central technical authority for product behavior across internal teams and external customers.

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Epitaxy & Reactor Expertise

•             Leverage strong understanding of compound semiconductor epitaxy and epi reactor fundamentals.

•             Understand critical growth parameters including temperature uniformity, V/III ratio, precursor chemistry, chamber pressure, dopant incorporation, thickness control, strain management, and defect formation mechanisms.

•             Correlate epitaxial variation to downstream optical and electrical device performance.

•             Partner with Epitaxy Engineering to reduce wafer-to-wafer and run-to-run variability.

•             Translate device-level failures into actionable feedback for reactor and process optimization.

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Advanced Data Analytics & Modeling

•             Perform deep dives into large-scale manufacturing datasets using SQL, JMP, Python, or equivalent tools.

•             Develop multivariate statistical models to isolate root causes of yield loss.

•             Apply regression analysis, variance decomposition, SPC, and DOE methodology.

•             Build predictive models for early detection of yield excursions.

•             Develop automated data analysis workflows to accelerate technical learning cycles.

•             Translate raw data into defensible, physics-based conclusions.

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Wafer Process & Device Integration

•             Analyze interactions between epitaxy, lithography, etch, deposition, metallization, inspection (AVI), and electrical/optical test steps.

•             Identify how upstream variability propagates into final device performance.

•             Provide Design-for-Manufacturability (DFM) input during new product development.

•             Reduce process sensitivity through structured experimentation and device-level insight.

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New Product Introduction (NPI)

•             Own yield performance during new product ramp from development into high-volume manufacturing.

•             Conduct structured technical risk assessments.

•             Rapidly identify and mitigate yield sensitivities during early production.

•             Shorten yield learning cycles using disciplined experimentation and data-driven decisions.

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Customer & External Technical Engagement

•             Serve as a primary technical interface for key customers on yield, device performance, and reliability topics.

•             Present complex technical findings clearly and confidently to customer engineering and quality teams.

•             Lead technical discussions during customer audits and yield reviews.

•             Support joint root cause investigations and corrective action plans.

•             Translate internal manufacturing data into customer-relevant performance metrics.

•             Build customer trust through clear, physics-based explanations of device behavior and variability.

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What Success Looks Like

•             Sustained improvement in product yield and variability across the full manufacturing flow.

•             Rapid containment and permanent resolution of yield excursions.

•             Successful high-yield ramp of new products into volume manufacturing.

•             Strong correlation established between epitaxial behavior and device-level outcomes.

•             Development of predictive models that prevent yield loss before it occurs.

•             Recognition internally and externally as a technical authority on product behavior.

•             Earned trust from key customers through technical rigor and consistent performance.

 

Education & Experience

•             PhD in Electrical Engineering, Applied Physics, Materials Science, or related discipline with strong emphasis on semiconductor device physics or relevant e