Engineer Principal, Mfg Product

About the Company

Lumentum is illuminating the networks of tomorrow with advanced photonic technologies that enable AI, data centers, telecom, industrial, and sensing applications. As AI accelerates the global demand for bandwidth and energy efficiency, we deliver the building blocks that keep data moving reliably, efficiently, and at massive scale. Our optical products support AI and compute infrastructure, cloud and DCI environments, metro and long-haul networks, while our lasers drive breakthroughs in precision manufacturing and sensing. For nearly five decades, Lumentum has been at the intersection of light and innovation. Headquartered in San Jose, California, we operate worldwide through a network of R&D, manufacturing, and sales locations.

About the Role

Lumentum is seeking a Product Development Engineer responsible for driving variant development of complex optical switch modules from end-to-end. This role combines strong technical expertise and project management skills to integrate new designs and ensure manufacturing readiness.

Key Responsibilities

• Lead and participate in New Product Introduction (NPI) processes, including process design and product design reviews.
• Troubleshoot product and yield issues; coordinate with cross-functional teams across multiple locations to identify and implement effective solutions addressing production, yield, cost, and quality challenges.
• Manage Bill of Materials (BOM) and collaborate with supply chain teams and suppliers to ensure timely development and readiness of custom parts and assemblies.
• Optimize manufacturing process flow; lead DFM, PFMEA, and develop or maintain detailed work instructions.

Qualifications

• Bachelor's degree or higher in Engineering or a related Science field.
• Strong organizational skills with the ability to manage multiple priorities and perform effectively under pressure.
• Excellent communication skills, both verbal and written, in English.
• Proven ability to collaborate effectively with cross-functional teams in a matrix organization, both locally and internationally.
• Strong data analysis capability – familiarity with databases, statistical analysis tools, and process control systems.
• Knowledge of assembly and test processes, equipment capabilities, reliability principles, and materials science.
• Experience working in NPI development is a plus.
• Experience in telecommunication products such as fiber optic line cards, optical modules, and components considered an asset.