Primary Duties & Responsibilities
- To be responsible for wafer back-end processes like dicing, sorting, top/bottom/facet AOI, frame creation, tape/detape, wafer/frame cleaning, etc.
- Monitors process performance using SPC, inspection yield, defect pareto, false-call/escape metrics, and equipment health indicators; maintains process control and responds to excursions.
- Maintains especially AOI/dicing/sorting stepwise yield and investigates defect excursions, nuisance defects, false rejects, and defect escapes; develops and implements corrective and preventive actions.
- Develops, characterizes, optimizes, and releases process recipes for semiconductor laser facet inspection, including lighting, focus, image acquisition, inspection regions, thresholds, algorithms, and defect classification criteria.
- Develops and maintains control plans, OCAPs, inspection specifications, defect libraries, golden samples, acceptance criteria, and recipe change-control documentation.
- Plans and executes engineering experiments, gauge studies, correlation studies, and capability analyses to improve defect detection sensitivity, repeatability, reproducibility, and discrimination between true defects and cosmetic variation.
- Correlates process results with manual microscope inspection, downstream electrical/optical test, reliability results, and failure analysis to validate inspection effectiveness and reduce risk of defect escapes.
- Drives continuous improvement activities to reduce scrap and reinspection, improve process capability and throughput, reduce cycle time and cost, and increase automated disposition where technically justified.
- Partners with Equipment Engineering and suppliers to troubleshoot image quality, motion, optics, illumination, software, recipe, and hardware issues and to support qualification of equipment upgrades or new inspection capability.
- Supports new product introduction and process changes by defining inspection requirements, establishing baseline defect signatures, qualifying recipes, and completing process readiness documentation.
- Trains Process Technicians, Operators, and Engineers on facet inspection methods, AOI/dicing/sorting recipes, defect classification, reaction plans, and proper handling of inspected material.
- Collaborates with Operations, Equipment Engineering, Process Integration, Design, Quality, Reliability, Failure Analysis, and Supply Chain to achieve business unit and organizational objectives.
Education & Experience
Required Minimum Education: 4 year college degree (Bachelor or Equivalent)
Expected Minimum Years of Related Experience: 2+ years
- A bachelor's degree in Electrical Engineering, Mechanical Engineering, Materials Science, Physics, Optics/Photonics, Computer Engineering, or a closely related science or engineering major and at least 2 years of relevant experience in semiconductor, optoelectronics, precision inspection, machine vision, or automated manufacturing; or a Master or PhD degree in a related field without industry experience.
- Experience with semiconductor laser devices, GaAs/InP processing, optical microscopy, machine vision, or automated optical inspection is preferred.
Skills
- Working knowledge of semiconductor wafer/device processing, engineering practices, and manufacturing process control.
- Deep Knowledge of automated optical inspection (AOI), machine vision, optical microscopy, image acquisition, lighting, focus, and defect detection concepts.
- Ability to develop and optimize recipes, thresholds, regions of interest, defect classifiers, and acceptance criteria for high-volume manufacturing.
- Knowledge of engineering statistics including SPC, DOE, process capability, measurement system analysis, gauge R&R, correlation, and hypothesis testing.
- Ability to analyze inspection images and large defect datasets, build paretos and trend analyses, and distinguish true process defects from inspection artifacts or nuisance calls.
- Experience with semiconductor laser facets, cleaved/coated optical surfaces, GaAs/InP devices, or optoelectronic manufacturing is preferred.
- Strong structured problem-solving skills and ability to lead root-cause analysis and corrective actions across process, equipment, material, and inspection contributors.
- Good written and oral communication skills, including clear technical documentation and cross-functional communication.
- Fluency in MS Office suite and JMP or other statistical analysis software; experience with AOI software, image analysis tools, SQL/Python, or manufacturing data systems is a plus.
- Working Conditions
- Work in a class 100/1000 clean room for extended periods as required by manufacturing support activities.
- Wear full cleanroom attire (smock, mask, gloves, etc.) and follow material-handling requirements for semiconductor devices.
- Work with and/or around manufacturing equipment, optical inspection systems, illumination sources, and chemicals used in semiconductor processing in accordance with site EHS procedures.
- Physical Requirements
- Stand for up to 4 hours at a time
- Lift up to 16-30 Pounds
- Push/Pull up to 16-30 pounds
- Sit for up to 4 hours at a time
- Safety Requirements
- All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.
- Quality and Environmental Responsibilities
- Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.
- Culture Commitment
- Ensure adherence to company's values (ICARE) in all aspects of your position at Coherent Corp.:
- Integrity - Create an Environment of Trust
- Collaboration - Innovate Through the Sharing of Ideas
- Accountability - Own the Process and the Outcome
- Respect - Recognize the Value in Everyone
- Enthusiasm - Find a Sense of Purpose in Work
Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.
If you need assistance or an accommodation due to a disability, you may contact us at [email protected].
Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.
Skills Required
- Bachelor's degree in Electrical Engineering, Mechanical Engineering, Materials Science, Physics, Optics/Photonics, Computer Engineering, or a closely related science or engineering field
- At least 2 years of relevant experience in semiconductor, optoelectronics, precision inspection, machine vision, or automated manufacturing
- Master's or PhD degree in a related field may substitute for industry experience
- Working knowledge of semiconductor wafer/device processing, engineering practices, and manufacturing process control
- Deep knowledge of automated optical inspection, machine vision, optical microscopy, image acquisition, lighting, focus, and defect detection
- Ability to develop and optimize inspection recipes, thresholds, regions of interest, defect classifiers, and acceptance criteria
- Knowledge of SPC, DOE, process capability, measurement system analysis, gauge R&R, correlation, and hypothesis testing
- Ability to analyze inspection images and large defect datasets and distinguish true defects from inspection artifacts
- Strong structured problem-solving and root-cause analysis skills
- Good written and oral communication skills
- Fluency with Microsoft Office and JMP or comparable statistical analysis software
- Experience with semiconductor laser devices, GaAs/InP processing, optical microscopy, machine vision, or automated optical inspection
- Experience with semiconductor laser facets, cleaved or coated optical surfaces, GaAs/InP devices, or optoelectronic manufacturing
- Experience with AOI software, image analysis tools, SQL, Python, or manufacturing data systems
- Ability to work in a cleanroom, wear full cleanroom attire, and follow EHS and material-handling procedures
Coherent Corp. Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Coherent Corp. and has not been reviewed or approved by Coherent Corp..
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Healthcare Strength — Healthcare Strength: Health coverage includes multiple national and region-specific options (UHC HDHP/HSA, PPO, EPO; Kaiser in CA; Health Net in OR) plus separate dental (Delta Dental) and vision (VSP), indicating strong breadth and choice. This breadth supports a solid total package in certain roles and locations.
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Equity Value & Accessibility — Equity Value & Accessibility: An Employee Stock Purchase Plan allows buying shares at 85% of market price with contributions up to 10% of pay, expanding ownership access. This feature can materially bolster total rewards even when base pay is mid‑pack.
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Leave & Time Off Breadth — Leave & Time Off Breadth: Paid time off includes 15 vacation days for new hires, 10 paid holidays, and additional paid time during a December shutdown. This structure provides a clear and competitive baseline for time away from work.
Coherent Corp. Insights
What We Do
Coherent empowers market innovators to define the future through breakthrough technologies, from materials to systems. We deliver innovations that resonate with our customers in diversified applications for the industrial, communications, electronics, and instrumentation markets. Headquartered in Saxonburg, Pennsylvania, Coherent has research and development, manufacturing, sales, service, and distribution facilities worldwide. For more information, please visit us at coherent.com.
