Lightmatter

Electro-Optic Link Hardware Engineer

Boston, MA · Full-time

Sponsorship not specified$195k-$250kDetected 4 days ago

PythonMATLABValuationPCB DesignCadenceCOMSOLMentoring

About the role

Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress.
The company invented the world's first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.
Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion.

Build system-level electrical/optical/EO channel models and correlate them against your own bench measurements
Own link budget and verification methodology while staying hands-on with the validating measurements
Support silicon bring-up and root-cause debug with analog, package, PCB, and SerDes teams
Build automation/tools to speed up characterization work

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

total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.
$195,000 - $250,000 USD

Comprehensive Health Care Plan (Medical, Dental & Vision)
Retirement Savings Matching Program
Life Insurance (Basic, Voluntary & AD&D)
Generous Time Off (Vacation, Sick & Public Holidays)
Paid Family Leave
Short Term & Long Term Disability
Commuter Benefits
Equity grants (applicable to full-time employees)
Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.
Flexible, hybrid workplace model

We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!
If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.
Lightmatter is (re)inventing the future of computing with light!
We're looking for a hands-on Photonics engineer to lead verification and characterization of high-speed electro-optic links across multiple silicon and system programs.
You'll work at the bench alongside the EOE team owning modeling methodology, measurement standards, and serving as the escalation point for the toughest signal integrity and link-performance problems in the org.

This listing is sourced directly from Lightmatter's careers page and normalized into a canonical job model.