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Principal Packaging Engineer, R&D

Molex possesses a rich heritage in the optical industry, delivering high-performance, field-proven optical solutions spanning components, modules, and fully integrated line cards.

We provide cutting-edge wavelength management and amplifier technologies, supported by deep optical, mechanical, electrical, and software integration capabilities.

These strengths enable Molex to serve the evolving needs of high-density, high-bandwidth, and flexible optical networks.

The Principal Packaging Engineer will own the technical leadership for advanced optoelectronic packages (e.g., CPO, ELSFP).

This role is responsible for component design/selection, performance optimization, and long-term reliability assurance of laser diodes and components embedded within advanced optoelectronic packages.

The position requires close collaboration with R&D and product design teams, manufacturing, suppliers, and customers to ensure laser components meet stringent optical, mechanical, and Telcordia reliability requirements.

What You Will Do


* Provide technical leadership and creativity to design novel III-V laser diode packaging technologies to support Datacenter growth


* Design packages that includes components (e.g., TEC, housing, lid, getter, fiber lens or discrete lenses, gratings)


* Develop processes that includes submicron alignment (x, y, z, f), solder attach of components (e.g., laser diode, ceramic mounts, TEC, etc.) and hermetic lid sealing


* Partner with product and operation teams to ensure designs are compatible with manufacturable, high-yield assembly flows


* Support sub-component supplier selection and evaluation, including technology maturity assessments for robust supply chain


* Support supplier improvement through audits, quality improvement plans, and risk-mitigation initiatives


* Define and oversee component pre-qualification and qualification strategies, including GR-468 Telcordia compliance


* Support failure analysis investigations and corrective actions for product related failures and manufacturing issues, working with internal teams, suppliers, and customers


* Work intimately with laser diode experts to create optimized designs

Who You Are (Basic Qualifications)



* PhD in Photonics, Mechanical Engineering, Physics, Optics, or a closely related field


* At least 10 years of industry R&D experience with mechanical design of optoelectronic packages developed and transferred to manufacturing environments


* Hands-on experience with optical alignment of components to submicron tolerances, designing for high thermal power density


* Mechanical design layout using Mech software package/s with finite element analysis (FEA) understanding (e.g., to calculate stress/design from CTE mismatch, optic misalignment, thermal limits etc.)


* Knowledgeable of various optical components (e.g., gratings, mirrors, lenses), stable attachment methods (e.g., epoxy and solder based)


* Expertise in comp...


  • Rate: Not Specified
  • Location: Fremont, US-CA
  • Type: Permanent
  • Industry: Engineering
  • Recruiter: Molex
  • Contact: Not Specified
  • Email: to view click here
  • Reference: 182388-en_US-US-CA-FREMONT-001
  • Posted: 2026-01-27 07:22:14 -

  • View all Jobs from Molex


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