Hermetic Packaging Process Development Engineer

Job Title

Hermetic Packaging Process Development Engineer

Role Summary

Responsible for developing and transferring hermetic sealing and assembly processes for free-space optical systems used in Optical Cross Connect Switch (OCS) and Wavelength-Selective Switch (WSS) products. Works within the Advanced Packaging & Integration group to move concepts from prototype to high-volume manufacturing.

This is an on-site engineering role focused on process design, characterization, optimization and production transfer for hermetic packaging of photonic modules.

Experience Level

Mid-level. The role expects approximately 5+ years of relevant engineering experience in packaging or process development.

Responsibilities

Key responsibilities include process development, prototype characterization, and supporting scale-up into production.

• Develop and validate hermetic packaging processes for free-space optical systems in collaboration with product, tooling and manufacturing partners.
• Invent and evaluate new hermetic sealing methods; contribute to process toolbox and IP generation.
• Design and execute experiments to resolve process unknowns and optimize performance and yield.
• Characterize prototypes and document results to support production transfer and NPI activities.
• Support product lifecycle from development through volume production, including occasional travel (~5%, primarily to Asia).
• Provide technical consultation, peer review and cross-team support within the Hermetics and Advanced Packaging teams.

Requirements

Required skills and experience (must-have) and additional desirable skills (nice-to-have).

Must-have:

• Minimum ~5 years of experience in process development, packaging or related engineering roles.
• Practical and theoretical knowledge of materials used in optical packaging (metals, solders, glasses, adhesives).
• Understanding of heat transfer, basic electrical circuits, and automated machinery/instrumentation.
• Experience developing assembly processes and associated equipment for volume production.
• Able to read and define mechanical drawing specifications and requirements.
• Proven ability to design and run experiments, analyze data, and make data-driven decisions.
• Strong attention to detail, accountability, and clear oral/written communication for program-level reporting and documentation.

Nice-to-have:

• Six Sigma certification or equivalent statistical process characterization skills.
• Practical experience with package fabrication methods (resistance/laser welding, solder sealing, helium leak testing, glove boxes, CMMs, 3D printing).
• Familiarity with optoelectronic product development from prototyping to NPI/volume production.
• Software development experience (any language) and CAD proficiency (SolidEdge, SolidWorks or equivalent).
• Basic machine-shop skills (mill, lathe, drill press) and knowledge of telecom reliability and test methods.

Education Requirements

Bachelor's or MSc degree in Engineering Physics, Mechanical Engineering, Materials Science, Physics, or a related engineering or physical science discipline.

About the Company

Company: Lumentum

Headquarters: Milpitas, California, United States

Lumentum develops optical and photonic products and subsystems for telecommunications, data centers, cloud computing and industrial applications, providing lasers, modulators, transceivers and test solutions that enable high-speed networking and advanced photonics.