Molex is seeking a Senior Si Photonics Design Engineer to join our Optical Solutions Business Unit (OSBU). In this role, the successful candidate will be part of a world‑class engineering team, contributing to the development of next‑generation Photonic Integrated Circuits (PICs). The successful candidate will be responsible for designing, implementing, and validating photonic components and circuits. The Senior Si Photonics Design Engineer will provide design support for existing and advanced photonic technology and collaborate with global, cross‑functional teams and supplier partners to develop next‑generation photonic solutions.

Our Team
The PIC Components & Technology Development team is responsible for the research and development of advanced technology platforms and solutions for the next generation of optical connectivity in AI fabrics, data centers, and datacom applications. Reporting to the Manager of Si Photonics (SiPho) Component Design, you will be a key member of the team and will contribute to various aspects of PIC development including design and optimization of passive and active SiPho components, EVT/DVT of optical devices and circuits, and collaboration with the layout, test, reliability, signal integrity, and integration teams.

What You Will Do

Design SiPho components and devices using commercial tools like Lumerical, COMSOL, FIMMPROP, etc for advanced applications such as PAM4 and coherent pluggables and co‑packaged optics

Design design for experiments and contribute to analyzing test data for EVT/DVT





Collaborate with other teams and external foundries to find innovative solutions for novel photonic platforms

Collaborate with the global layout team to assist with seamless development of GDS layouts

Closely collaborate with SI/PI and packaging teams to accommodate reliable integration of PICs into final products

Who You Are (Basic Qualifications)

Master’s degree in Electrical Engineering, Physics or related technical fields

At least 2 years of relevant industrial or academic experience in designing photonic/electrical devices and components

Experience with photonic and optoelectronic devices

Experience with CMOS semiconductor and backend processes

Experience with design tools such as Lumerical, COMSOL, Fimmprop, etc.

What Will Put You Ahead

PhD degree, typically in Electrical Engineering, Physics, or any other related technical fields

At least 4+ years of industry experience in PIC design and validation

For this role, we anticipate paying $150,000 - $225,000 per year. This role is eligible for variable pay, issued as a monetary bonus or in another form.

We are an equal prospect employer. If you require accommodation or assistance at any time during the application or selection processes, please submit a request by following the directions located in the FAQ section at the bottom of the kochcareers.com webpage.

Successful candidates will be required to complete a criminal background check.

Fremont, California | Fremont, California

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📌 Si Photonics Design Engineer (Quebec City)
🏢 Molex
📍 Quebec City