Coherent

Sr. Principal Photonic Process Integration Engineer

Coherent • $130K — $180K *
Fremont, CA 94536In-Person
Telecommunications & Hardware
8 - 10 years of experience
Today
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Job Overview by Ladders

Qualifications

  • PhD in Electrical Engineering, Physics, Materials Science, or related field.
  • 10+ years of experience with semiconductor foundries and photonics process developments.
  • Strong understanding of photonics foundry and back-end manufacturing processes.
  • Experience in qualification of photonic foundry processes and PIC products.
  • Familiarity with advanced packaging techniques.

Responsibilities

  • Serve as the primary technical liaison with silicon photonics and CMOS partners.
  • Coordinate foundry engagements for process development and manufacturing readiness.
  • Plan and participate in audits of external partners to assess quality systems and controls.
  • Lead root-cause analysis and failure investigations with internal teams and foundries.
  • Analyze yield detractors through systematic data assessment and corrective actions.
  • Collaborate on Continuous Improvement Programs to enhance performance and reliability.
  • Support new product introductions and ensure compliance in foundry processes.

Benefits

  • Hybrid working model promoting work-life balance.
  • Opportunities for travel to partner sites for engagement and collaboration.
  • Regular interaction with industry-leading experts in the field.
  • Chance to influence and drive technological advancements in photonics.
Full Job Description
Job Description

Primary Duties & Responsibilities
  • Serve as the primary technical liaison between Coherent and external silicon photonics, silicon CMOS, and advanced packaging foundry partners.
  • Coordinate and drive foundry engagements related to process development, process control, manufacturing readiness, and technology qualification.
  • Plan, coordinate, and participate in technical and quality audits of external foundry and manufacturing partners to assess process controls, quality systems, manufacturing readiness, and continuous improvement initiatives.
  • Lead root-cause investigations and failure analysis activities in collaboration with foundries, internal reliability teams, and product engineering organizations.
  • Track, analyze, and resolve wafer-level, die-level, and module-level yield detractors through systematic data analysis and corrective action implementation.
  • Partner with foundries to identify, prioritize, and execute Continuous Improvement Program (CIP) initiatives that improve device performance, yield, reliability, and manufacturability.
  • Collaborate with PIC design teams to identify process sensitivities and implement Design-for-Manufacturing (DFM), Design-for-Yield (DFY), and process robustness improvements.
  • Develop process characterization plans and monitor key process metrics, process windows, and critical device parameters across multiple foundry platforms.
  • Analyze fabrication, test, and reliability data to identify process trends, excursions, and opportunities for improvement.
  • Support new product introductions, technology transfers, process qualifications, and foundry migrations.
  • Work closely with reliability, test engineering, and manufacturing teams to establish process control methodologies and monitor long-term process stability.
  • Participate in technical reviews with internal stakeholders and external foundry partners and communicate project status, risks, and mitigation plans.
  • Drive corrective and preventive actions (CAPA) resulting from yield excursions, reliability concerns, or customer-return investigations.
  • Evaluate foundry process control methodologies, Statistical Process Control (SPC) implementation, excursion management procedures, change control practices, and corrective/preventive action (CAPA) systems.
  • Review foundry process changes, engineering change notices (ECNs), process change notifications (PCNs), and technology updates to assess potential impacts on product performance, yield, reliability, and qualification status.
  • Establish and maintain supplier performance metrics, including yield, defect density, process capability, cycle time, on-time delivery, and quality indicators.
  • Develop and maintain process integration documentation, manufacturing specifications, process control plans, and supplier quality requirements.

Education & Experience
  • PhD in Electrical Engineering, Physics, Materials Science, or related field
  • 10+ years of experience working with semiconductor foundries, photonics processes developments
  • Strong understanding of photonics foundry and back-end manufacturing processes
  • Experience in qualification of photonic foundry process and PIC products
  • Experience with advanced packaging

Skills
  • Strong understanding silicon photonics process integration and device manufacturing
  • Yield analysis, SPC, and JMP statistical data analysis
  • Failure analysis (FA), root-cause investigation, and CAPA implementation
  • Python programming for data analysis, automation, and reporting
  • Foundry engagement, supplier quality management, and process audits

Working Conditions
  • This position is hybrid
  • May require occasional off-site meetings or travel
  • Regular use of a computer and other office equipment is necessary
  • Interaction with team members and external contacts is a regular part of the job
  • May require occasional overtime and flexibility in work hours to accommodate the executive's needs

Physical Requirements
  • Sitting for extended periods while working on a computer or conducting meetings.
  • Use of hands and fingers for typing, writing, and handling documents.
  • Occasional lifting of objects or materials up to 20 pounds for administrative tasks.
  • Ability to communicate verbally and in writing.
  • Mobility within the office environment to attend meetings or interact with colleagues.

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.

About Coherent

Coherent, Inc. is a global leader in providing laser-based solutions to a broad range of commercial and scientific research customers. The company designs, manufactures, and markets lasers, laser-based systems, precision optics, and related accessories for a diverse group of customers. Coherent's markets include scientific research, OEM components and instrumentation, microelectronics, materials processing, and life sciences. The company's products are used in a wide range of applications. Coherent was founded in 1966 and is headquartered in Santa Clara, California.
Learn more about Coherent
Size
5,085 employees
Market Cap
$4.6 billion
Industry
Manufacturing & Automotive
Net Income
-$419.7 million
Founded
1966
5 Year Trend
+27.8%
Revenue
$1.2 billion
NASDAQ
COHR
* Ladders Estimates

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