Senior Product & Yield Device Engineer

Job Title

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.

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.

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.

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.

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.

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.

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 experience with Master/B-Eng.

• 5+ years of experience in semiconductor device, product, or yield engineering in high-volume manufacturing.

• Demonstrated history of independently leading complex technical investigations and delivering measurable yield improvement.

• Experience in compound semiconductor or optoelectronic…