Sr. Principal Photonic Process Integration Engineer

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.

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

• 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.

• 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.

• 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…