Senior Photonics Circuit Design Engineer
LightmatterVisit Lightmatter website
Lightmatter is a photonic-computing company developing optical interconnects and light engines for AI-scale data centers.
Mountain View, United States
Funding history
About Lightmatter
Founded in 2017 by MIT researchers, Lightmatter develops photonic infrastructure for AI, including its Passage interconnect platform and Guide light engine.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design and model photonic and analog sub-circuits for laser products and optical links. You will create behavioral models, calibrate them using simulation and silicon data, build circuit-level simulations, analyze variation and yield, and validate models against empirical measurements.
Requirements
- Ph.D. in Electrical Engineering, Applied Physics, Photonics, or a related discipline plus 2+ years of industry experience, or an M.S. plus 5+ years
- Background in silicon photonic physics and analog circuit fundamentals
- Experience generating behavioral component models for circuit-level co-simulation
- Expertise with photonic modeling platforms including Lumerical, RSoft, or Tidy3D
- Expertise with Cadence Virtuoso and Spectre
- Python skills for modeling, data extraction, and shared engineering codebases
- Data-driven technical problem-solving
- Structured engineering review and simulation automation
- Written and verbal technical presentation skills
- Capacity to comply with federally mandated U.S. export control requirements
Responsibilities
- Construct and maintain compact and behavioral models for active and passive silicon photonic elements
- Incorporate process variation, dispersion, thermal-optical tuning, and nonlinear properties into component models
- Partner with device engineers to extract and calibrate model parameters using optical solvers, foundry PDKs, and silicon data
- Architect and deliver sub-circuit simulations for laser modules and analog interfaces
- Implement sub-circuit models for optical interconnect blocks
- Refine sub-circuit topologies against performance indicators including insertion loss, extinction ratio, bandwidth, and noise performance
- Execute corner, statistical Monte Carlo, and margin analyses to establish tolerances and evaluate yield
- Validate and iterate behavioral models using empirical silicon measurements
Benefits
- Comprehensive medical, dental, and vision health plan
- Retirement savings matching program
- Basic, voluntary, and AD&D life insurance
- Vacation, sick time, and public holidays
- Paid family leave
- Short-term and long-term disability coverage
- Training and development
- Commuter benefits
- Flexible hybrid workplace model
- Equity grants for eligible full-time employees
