Senior Silicon Photonics Engineer

Doist; San Jose (CA); On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

Health insurance

Comprehensive benefits

Job summary

Lumilens in San Jose, CA is seeking a Senior Silicon Photonics Engineer to design high-speed silicon photonic integrated circuits from concept to tapeout and validation. You will work on modulators, photodetectors, and passive components, perform multi-domain simulations, and collaborate with electronics and packaging teams to realize production-ready systems.

Candidates with a PhD or related experience and 0–5 years are encouraged, with strong fundamentals in guided-wave optics and access to

Qualifications

• PhD or equivalent in electrical engineering, physics, or related field.
• 0–5 years of relevant silicon photonics experience.
• Strong knowledge of guided-wave optics and device physics.

Responsibilities

• Design and optimize silicon photonic devices and circuits for high-speed operation.
• Perform multi-domain simulations (EM, circuit, thermal) to meet targets.
• Implement PIC layouts (GDS) using foundry PDKs and support tapeouts.
• Collaborate with electronics and packaging teams for system integration.
• Support silicon bring-up and characterization; drive design iterations.

Skills

PIC design

Waveguide optics

Device physics

High-speed photonics

Education

PhD in Electrical Engineering or related field

Tools

Lumerical

COMSOL

Job description

# Senior Silicon Photonics EngineerLumilens • San Jose, CA • • 2h agoSave this role or tell us whether you want more jobs like it.**Role Overview**You will design **high-speed silicon photonic integrated circuits** operating at the limits of bandwidth and integration, and take them from **concept → tapeout → silicon validation**.This role is suitable for **strong PhD graduates through early-career engineers (~0–5 years experience)** who want to work on **real, production-bound systems**, not just simulations.**Roles & Responsibilities*** Design and optimize **silicon photonic devices and circuits**, including: + High-speed **modulators (MZI, ring, advanced structures)** + **Photodetectors** and receiver building blocks + Passive components (couplers, filters, routing)* Perform **multi-domain simulations** (EM, circuit, thermal) to meet targets in: + Bandwidth (**200G/lane+**) + Insertion loss, extinction ratio, efficiency* Implement **PIC layouts (GDS)** using foundry PDKs and support tapeouts* Co-design with **electronics and packaging teams** for CPO/NPO systems: + RF effects, parasitics, signal integrity, and thermal constraints* Support **silicon bring-up and characterization**: + Correlate measurement vs simulation + Drive **design iterations and improvements*** Contribute to **design libraries, modeling, and methodology development****Requirements*** **Education** + **PhD in Electrical Engineering, Physics, or related field** (silicon photonics or closely related area)* **Experience** + **0–5 years of relevant experience (including fresh PhD graduates)*** **Technical Skills** + Experience in **design and simulation of silicon photonic devices or PICs** + Strong understanding of **guided-wave optics and device physics** + Familiarity with tools such as **Lumerical, COMSOL, or equivalent*** **Implementation Skills** + Exposure to **PIC layout and tapeout flows (PDK, DRC/LVS)*** **System Awareness** + Basic understanding of **optical communication systems and/or RF effects****Nice to Have*** Experience with **high-speed devices (>100 GHz bandwidth or equivalent)*** Exposure to **CPO/NPO or optical transceiver architectures*** Familiarity with **SiPh + III-V integration*** Experience with **inverse design / adjoint methods** (e.g., Meep)**Why Join Us*** Work on **real products at 200G/lane+**, not just research prototypes* Direct impact on **AI infrastructure and hyperscale systems*** Fast iteration cycles from **design → silicon → system*** High ownership early in your career* Comprehensive benefits package including health insurance* Collaborative environment with world-class engineering and R&D teams