Product Engineer

Coherent Corp.•Sherman, TX

18d

About The Position

The Product Engineer owns product yield for InP edge-emitting lasers and photodiodes. The role monitors electrical and optical device performance across wafers, lots, and manufacturing stages; analyzes wafer- and die-level test data; identifies yield detractors and emerging quality concerns; and drives measurable, sustained yield improvements. The engineer investigates manufacturing failures and process or epitaxial excursions, establishes root causes, and develops and verifies corrective and preventive actions with cross-functional teams. The position plans experiments to understand how epitaxial properties and fabrication processes affect device performance, and supports product characterization, specification reviews, process-change evaluations, product enhancements, and transitions between R&D and manufacturing. It communicates performance trends, investigation results, specifications, corrective actions, and improvement progress through technical documentation and product reviews, and provides technical support to internal and external stakeholders. The role works with engineering, epitaxy, device design, test, manufacturing, quality, and reliability teams. Work takes place in office and semiconductor manufacturing environments, with access to laboratory and manufacturing areas as required. Employees must follow site and corporate EHS procedures. Depending on location, the position may also support applicable quality and environmental management standards.

Requirements

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.
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, including 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, teamwork, and technical communication skills.
Ability to work effectively with engineering, manufacturing, quality, and reliability colleagues to resolve technical issues and improve product yield.
Proficiency in Python for data analysis and automation is described as essential in the qualifications section.
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.
Willingness to continuously learn and adapt to new technologies and industry advancements.

Nice To Haves

Experience with III-V semiconductor devices, particularly InP lasers or photodiodes.
Data processing, scripting, and automation experience, particularly with JMP/JSL, SQL, Python, or similar tools for analyzing large manufacturing datasets.
Familiarity with JMP or similar statistical analysis tools.
Experience in yield improvement initiatives.
Proven product engineering experience, particularly with laser devices or optoelectronics.

Responsibilities

Own product yield for InP edge-emitting lasers and photodiodes, monitor performance, identify yield detractors, and drive 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.
Collaborate with epitaxy, process engineering, device design, test, manufacturing, quality, and reliability teams to investigate failures and establish root causes.
Develop and implement corrective and preventive actions with cross-functional teams, and verify their 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 evaluations of process changes to maintain product performance and manufacturability.
Communicate yield trends, investigation findings, corrective actions, and improvement progress through technical reports and regular product reviews.
Collaborate with cross-functional teams to enhance yield and reduce costs for InP laser devices.
Implement performance-boosting actions and drive product enhancements for laser products.
Apply knowledge of laser device physics to optimize reliability and efficiency.
Use data analysis tools, including JMP and Python, to support informed decision-making.
Work with R&D and manufacturing teams to support product transitions.
Document and communicate product specifications and provide timely technical support and guidance to internal and external stakeholders.
Stay informed about industry trends and emerging technologies in laser devices.
Follow site EHS procedures and Coherent Corp. Corporate EHS standards.
Depending on location, execute or maintain applicable quality and environmental management standards, including ISO 9000, 9001, and 14001.
Adhere to Coherent Corp.'s ICARE values: Integrity, Collaboration, Accountability, Respect, and Enthusiasm.