Electro-Optic Link Hardware Engineer — Hybrid & Equity

Lightmatter; Boston (MA); Hybrid; USD 195,000 - 250,000; Full time

Benefits offered by this job

Health insurance

Retirement matching

Life insurance

Generous time off

Paid family leave

Disability insurance

Training & development

Commuter benefits

Hybrid work model

Equity grants

Job summary

Lightmatter is seeking a hands-on Photonics engineer to lead verification and characterization of high‑speed electro‑optic links across silicon and system programs. You’ll work at the bench with the EOE team, own modeling methodology, measurement standards, and serve as the escalation point for the toughest signal integrity problems in the org.

You should have an advanced EE/Photonics degree with extensive lab experience on 56G+ links, plus strong Python/MATLAB automation.

Qualifications

• Advanced degree in EE, Photonics, or Physics with 8+ years (PhD) or 10+ years (BS/MS) experience.
• Ownership of verification strategy for a full silicon/system program.
• Deep expertise in 56G/112G/224G+ serial links and SerDes equalization and signal integrity.

Responsibilities

• Run hands-on lab characterization and debug of high-speed electrical/optical hardware, including novel failure modes
• Build system-level electrical/optical/EO channel models and correlate with bench measurements
• Own link budget and verification methodology while staying hands-on with the validating 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 staying in lab
• Build automation/tools to speed up characterization work

Skills

Ownership of verification strategy

Hands-on lab leadership

Python/MATLAB automation

Mentoring engineers

Signal integrity knowledge

Education

MS/PhD in EE, Photonics, Physics (8+ yrs) or BS/MS (10+ yrs)

Tools

VNA

Scopes

BERTs

TDRs

ADS

HFSS

Cadence

COMSOL

Job description

Lightmatter is seeking a hands-on Photonics engineer to lead verification and characterization of high‑speed electro‑optic links across silicon and system programs. You’ll work at the bench with the EOE team, own modeling methodology, measurement standards, and serve as the escalation point for the toughest signal integrity problems in the org.

You should have an advanced EE/Photonics degree with extensive lab experience on 56G+ links, plus strong Python/MATLAB automation.