Electro-Optic Link Hardware Engineer

Lightmatter is a photonic-computing company developing optical interconnects and light engines for AI-scale data centers.

Mountain View, United States
About Lightmatter

Founded in 2017 by MIT researchers, Lightmatter develops photonic infrastructure for AI, including its Passage interconnect platform and Guide light engine.

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Skills

Candidate Availability

Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You will lead the verification and characterization of high-speed electro-optic links across silicon and system programs. You will perform bench measurements, develop electrical and optical channel models, investigate signal-integrity issues, support silicon bring-up, and build automation tools for characterization.

Requirements

  • MS or PhD in Electrical Engineering, Photonics, or Physics with 8+ years of experience, or BS or MS with 10+ years of experience
  • Ownership of verification strategy for a full silicon or system program
  • Expertise in 56G, 112G, and 224G+ serial links, SerDes equalization, and signal integrity
  • Hands-on lab experience leading complex investigations
  • Python or MATLAB proficiency for automation frameworks
  • Proficiency with VNA, oscilloscopes, BERTs, TDRs, ADS, HFSS, Cadence, and COMSOL
  • Track record of mentoring engineers

Responsibilities

  • Run hands-on lab characterization and debug of high-speed electrical and optical hardware
  • Build system-level electrical, optical, and EO channel models and correlate them with bench measurements
  • Own link-budget and verification methodology
  • Characterize eye diagrams, BER, jitter, equalization, and channel impairments
  • Support silicon bring-up and root-cause debug with analog, package, PCB, and SerDes teams
  • Influence chip, package, and system architecture trade-offs based on bench findings
  • Mentor Senior and Staff engineers while remaining hands-on in the lab
  • Build automation tools to accelerate characterization work

Benefits

  • Comprehensive health care plan including medical, dental, and vision coverage
  • Retirement savings matching program
  • Life insurance including basic, voluntary, and AD&D coverage
  • 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
Electro-Optic Link Hardware Engineer at Lightmatter | JobStash