Senior Silicon Photonics Design Engineer
NVIDIA
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.
- MS and/or PhD in Electrical Engineering, Applied Physics, Photonics/Optical Engineering, or related field (or equivalent experience).
- Electronic-photonic co-simulation and Verilog-A compact modeling, integrating photonic models into a circuit design environment (Cadence ecosystem a plus).
- 5+ years of design experience in industry or applied R&D, spanning photonic and/or high-speed electronic design.
- Proven track record in silicon photonics device modeling, compact modeling, or optical component design.
- Photonic simulation tools: Lumerical (FDTD, MODE, INTERCONNECT, CHARGE) or comparable (Ansys, Synopsys OptoDesigner/RSoft).
- Solid grasp of photonic device physics: resonator theory (CMT, Q, FSR, ER/OMA), carrier-based and thermo-optic modulation, waveguide loss and dispersion.
- Experience building verification/testbench environments and correlating models to measurement.
- Strong debugging and analytical skills, and a genuine desire to work as part of a close-knit team.
- Foundry PDK flow experience, photonic layout/DRC awareness, optical VNA/LCA measurement background.
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