Senior Silicon Photonics Design Engineer

Job Description

Optical interconnect is becoming the backbone of AI-scale computing, and co-packaged optics is one of the hardest, highest-impact problems in that shift. We're looking for a senior engineer to join the team that owns silicon photonics design and modeling for our optical roadmap. This role lives at the electronic-photonic boundary — building the models and co-simulation flows that let photonic and high-speed electronic designs be verified together. You'll work shoulder-to-shoulder with circuit, system, and characterization engineers, and share in the team's collective ownership of a foundational capability.What you'll be doing: Develop and maintain the electro-optic co-simulation flow, integrating Verilog-A compact models with circuit and link simulation so photonics and electronics can be verified in one environment. Define silicon-photonics test structures and characterization plans, and extracting compact-model parameters from measured optical, electrical, electro-optic, RF, and thermal data. Build and calibrate compact/behavioral models for silicon photonic components — ring modulators and resonators, Mach-Zehnder modulators, photodetectors, grating/edge couplers, waveguides, splitters, and thermo-optic phase shifters. Correlate models against foundry and in-house characterization data (spectra, S-parameters, OMA/ER), contributing to the model accuracy and validation the team is collectively responsible for. Partner closely with circuit/SerDes designers, system teams, and foundry contacts as the direct customers of the team's models. Contribute to the shared component library the team maintains — versioning, documentation, QA, and release — taking detailed physics/EM models as source data and abstracting them into design-usable form.

Skills Required

• Electronic-photonic co-simulation
• Verilog-A compact modeling
• Circuit design environment
• Cadence ecosystem
• Silicon photonics device modeling
• Compact modeling
• Optical component design
• Photonic simulation tools
• Lumerical (FDTD, MODE, INTERCONNECT, CHARGE)
• Ansys
• Synopsys OptoDesigner/RSoft
• Photonic device physics
• Resonator theory (CMT, Q, FSR, ER/OMA)
• Carrier-based and thermo-optic modulation
• Waveguide loss and dispersion
• Verification/testbench environments
• Model correlation to measurement
• Debugging
• Analytical skills
• Foundry PDK flow
• Photonic layout/DRC awareness
• Optical VNA/LCA measurement