Lead Photonics Electro-Optic Link Verification Engineer

Lightmatter, Inc.; Massachusetts; Hybrid; USD 150,000 - 207,000; Full time

Benefits offered by this job

Retirement Savings Matching Program

Life Insurance (Basic, Voluntary & AD&

Generous Time Off (Vacation, Sick &amp

Paid Family Leave

Short Term & Long Term Disability

Training & Development

Flexible, hybrid workplace model

Equity grants (applicable to full-time

Job summary

Lightmatter is leading the revolution in AI data center infrastructure, and we are seeking a hands-on Photonics engineer to lead verification and characterization of high-speed electro-optic links. The role involves bench work, modeling, and coordinating with SerDes, analog, PCB, and packaging teams; you will mentor engineers while advancing test methodologies.

The position offers a flexible, hybrid workplace with equity grants and a competitive total compensation package for US-based candidates.

Qualifications

• MS/PhD in EE/ Photonics/ Physics with 8+ years OR BS/MS with 10+ years experience.
• Ownership of verification strategy for a full silicon/system program.
• Deep expertise in 56G/112G/224G+ serial links and SI (S-parameters, crosstalk, link budgets).
• Hands-on lab experience leading investigations that stalled others.
• Strong Python/MATLAB for automation.
• Proficiency with VNA, scopes, BERTs, TDRs and tools like ADS, HFSS, Cadence, COMSOL.
• Track record mentoring engineers.

Responsibilities

• Run hands-on lab characterization and debug of high-speed electrical/optical hardware.
• Build system-level electrical/optical/EO channel models and correlate them against bench measurements.
• Own link budget and verification methodology while remaining hands-on with measurements.
• 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/system architecture tradeoffs based on bench findings.
• Mentor Senior/Staff engineers while continuing lab work.
• Build automation/tools to speed up characterization work.

Skills

Python

MATLAB

Signal integrity

Lab debugging

Mentoring

Education

EE/Photonics degree

Tools

VNA

Scopes

BERTs

ADS

HFSS

Cadence

COMSOL

Job description

Lightmatter is leading the revolution in AI data center infrastructure, and we are seeking a hands-on Photonics engineer to lead verification and characterization of high-speed electro-optic links. The role involves bench work, modeling, and coordinating with SerDes, analog, PCB, and packaging teams; you will mentor engineers while advancing test methodologies.

The position offers a flexible, hybrid workplace with equity grants and a competitive total compensation package for US-based candidates.