Principal Quality Engineer-Optical Systems

Coherent • Sunnyvale, CA

5d • Onsite

About The Position

The Principal Quality Engineer-Optical Systems will partner with cross-functional teams to ensure quality is built into product and process development. This role involves leading root cause investigations, driving corrective actions, and developing quality plans for optical systems. The engineer will monitor quality indicators, conduct audits, and collaborate with suppliers to improve supply chain quality. Support for new product introduction and continuous improvement initiatives using Lean and Six Sigma principles are key aspects of this position. The role also includes preparing and presenting quality performance reports to leadership.

Requirements

• M.S. or higher in Electrical Engineering, Optical Engineering, Mechanical Engineering, Materials Science, or related technical field.
• Minimum 10 years of experience in quality engineering focused on optical systems, photonics devices, or optoelectronic assemblies.
• Demonstrated experience supporting products through NPI and high-volume technical manufacturing environments.
• Strong technical understanding of optical systems including lasers, transceivers, photonic components, packaging, and opto-mechanical assemblies.
• Exceptional root cause investigation and failure analysis capabilities in complex technical manufacturing environments.
• Experience conducting internal audits and supporting external audits within ISO-based quality management systems.
• Proven track record in process improvement, yield enhancement, and implementation of quality systems and controls.
• Hands-on experience working closely with manufacturing teams to resolve quality escapes and improve process robustness.
• Ability to synthesize complex technical data into clear, actionable recommendations for cross-functional teams and leadership.
• Strong communication skills and ability to work effectively across global teams and suppliers.
• Self-driven, adaptable, and comfortable operating in ambiguous or rapidly evolving environments.

Nice To Haves

• Experience working in fast-paced or startup environments preferred.

Responsibilities

• Partner with cross-functional teams including optical design, mechanical engineering, manufacturing, process engineering, and suppliers to ensure quality is built into product and process development.
• Lead structured root cause investigations using methodologies such as 8D, DMAIC, Fishbone, and 5-Why to resolve internal and customer-facing quality issues.
• Drive corrective and preventive actions (CAPA) to closure and verify effectiveness through data-based validation and follow-up.
• Develop and maintain quality plans, control plans, inspection strategies, and process documentation for optical systems and assemblies.
• Implement and monitor yield metrics, and other quality indicators to reduce variation and improve product performance.
• Conduct and support internal audits to ensure compliance with ISO 9001 and other applicable quality management standards.
• Collaborate with suppliers to evaluate process capability, manage nonconformances, and improve overall supply chain quality performance.
• Support new product introduction (NPI) and production ramp activities, ensuring process readiness, risk mitigation, and manufacturing scalability.
• Drive continuous improvement initiatives using Lean and Six Sigma principles within a technical manufacturing environment.
• Prepare and present quality performance reports, audit findings, and improvement plans to leadership and key stakeholders.

Benefits

• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Principal