Product Engineer
Coherent
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- Location
- Sherman, TX
- Job type
- Full time
- Posted
- Oct 19
- 3 days ago
Career path
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About the company
Coherent
Semiconductors · 10,001+ employees
What you'll do
- Own product yield for InP edge-emitting lasers and photodiodes, including monitoring performance, identifying yield detractors, and driving measurable yield improvement.
- Monitor electrical and optical device trends across wafers, lots, and manufacturing stages to identify process or epitaxial excursions, performance shifts, and emerging quality concerns.
- Analyze wafer-level and die-level test data using yield summaries, failure paretos, wafer maps, and statistical comparisons to prioritize improvement opportunities.
- Work closely with epitaxy, process engineering, device design, test, manufacturing, quality, and reliability teams to investigate failures and establish root cause.
- Develop and implement corrective and preventive actions with cross-functional teams. Verify effectiveness through device performance, yield improvement, and sustained process stability.
- Plan and evaluate experiments to understand relationships between epitaxial properties, fabrication processes, and device performance.
- Support product characterization, specification reviews, and evaluation of process changes to maintain product performance and manufacturability.
- Communicate yield trends, investigation findings, corrective actions, and improvement progress through clear technical reports and regular product reviews.
- Minimum 4 years of relevant experience in semiconductor product engineering, device engineering, process engineering, or a related technical role.
- BS/MS in Electrical Engineering, Physics, Materials Science, Optical Engineering, or a related discipline, or an equivalent degree.
- Experience analyzing semiconductor device performance, investigating manufacturing yield loss, and applying structured root cause analysis.
- Experience with III-V semiconductor devices, particularly InP lasers or photodiodes, is preferred.
- Strong understanding of semiconductor laser fundamentals, including threshold current, optical gain and loss, slope efficiency, spectral behavior, and temperature-dependent performance.
- Strong root cause analysis and problem-solving skills, with the ability to connect device behavior to potential epitaxial, fabrication, or test-related causes.
- Working knowledge of statistical analysis, process control, and design of experiments.
- Ability to take ownership of yield issues, prioritize investigations, and follow corrective actions through implementation and verification.
- Strong interpersonal, teaming, and technical communication skills.
- Work effectively with other members of Coherent Corp. across engineering, manufacturing, quality, and reliability functions to resolve technical issues and improve product yield.
- Data processing, scripting, and automation skills are a significant plus, particularly experience with JMP/JSL, SQL, Python, or similar tools for analyzing large manufacturing datasets.
- Work in office and semiconductor manufacturing environments.
- Ability to perform computer-based data analysis, prepare technical documentation, and participate in technical discussions.
- Ability to access laboratory and manufacturing areas, including occasional standing and walking, as required by the role.
What you need
- Semiconductor device knowledge
- Statistical analysis
- Strong ownership
Key skills
Semiconductor device knowledgeStatistical analysisRoot causesPlan experimentsTechnical reports
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Job Summary: Own product yield for InP edge-emitting lasers and photodiodes by monitoring device performance, identifying yield detractors, and driving measurable improvement. Analyze wafer- and die-level data to detect process or epitaxial excursions, performance shifts, and emerging quality concerns. Partner with epitaxy, process engineering, device design, test, manufacturing, quality, and reliability teams to investigate failures, determine root causes, and implement effective corrective actions. Plan experiments and evaluate process changes to improve device performance, manufacturability, and process stability. Communicate yield trends, findings, and improvement progress through technical reports and product reviews. Apply semiconductor device knowledge, statistical analysis, and strong ownership to resolve technical issues and support continuous improvement.