Lightmatter

Lightmatter

Electro-Optic Link Hardware Engineer

Mountain View, CA · Full-time

Sponsorship not specified$155k-$190kDetected 27 days ago
PythonMATLABValuationPCB DesignCadenceCOMSOLMentoring

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odds of building a lasting career here

53Sponsors, lottery-bound
Cap-exempt (no lottery)0
Sponsors this role58
Entry-level history0
PERM / green-card track0
Lottery odds (Level IV)94
Fits your clock70

Sponsors, but it's cap-subject — you still face the weighted lottery (~61% per draw at Level IV). Good if you win; have a cap-exempt backup on your list.

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Employer immigration record

from this employer's Department of Labor filings

Files H-1B transfers

10 transfer filings in the last year, covering 10 workers. Median labor-condition decision: 28 days. An employer that already files transfers is one that can take over an existing H-1B.

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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.

Responsibilities

  • 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

Requirements

  • 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

Nice to have

  • Silicon photonics/EO systems at the architecture level
  • COM/IBIS-AMI modeling, patents/standards contributions (OIF, IEEE 802.3)

Compensation

  • 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.
  • $155,000 - $190,000 USD

Benefits

  • 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

Company info

  • 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.

Visa & Work Authorization

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