Lightmatter

Lightmatter

Mixed-Signal Validation Engineer

Mountain View, CA · Senior · Full-time

Sponsorship not specified$186k-$246kDetected 57 days ago
PythonMATLABRESTAgentic AIValuationElectrical EngineeringCommunicationProblem Solving

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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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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

  • 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.

Responsibilities

  • Own mixed-signal architecture validation for Lightmatter's Passage product line. Work closely with the rest of the architecture team, chip design team, and the software team.
  • Validate and specify system-level mixed-signal designs, integrating complex AMS and photonic circuits. These circuits include high-speed drivers and receivers, SerDes, ADCs/DACs, digital controllers, and photonic modulators and detectors.
  • Work closely with test and validation engineers to validate hardware against simulation predictions.
  • Collaborate with DV team to translate pre-silicon verification into post-silicon validation
  • Support architectural-level firmware validation
  • Author, review, and validate architectural specifications and test methodologies.
  • Own mixed-signal architecture validation for Lightmatter's Passage product line.
  • Work closely with the rest of the architecture team, chip design team, and the software team.

Requirements

  • MS in Electrical Engineering or a related field with 7+ years of relevant experience.
  • Proven track record of delivering successful high-volume silicon to market, and a thorough understanding of the silicon product development flow.
  • Hands-on experience with lab instruments and test setups.
  • In-depth knowledge of design flows for AMS electronics, preferably on photonic communication channels.
  • In-depth knowledge of mixed-signal circuit design in a high-speed analog/photonic link, including device bring-up, control, and digital signal processing.
  • Demonstrated strong problem-solving skills, specifically for problems that do not have obvious solutions.
  • Ability and desire to collaborate in a cross-disciplinary team.

Nice to have

  • Understanding of SerDes PCS layer and equalization, along with forward error-correction schemes.
  • Power user of development tools, including AI agents, CAD tools, SPICE simulators, IBIS-AMI simulators, and programming languages (e.g., MATLAB or Python).
  • Experience in optical link bring-up and debug.

Skills

  • Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress.
  • Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion.
  • Lightmatter is (re)inventing the future of computing with light!
  • Your work will enable not only the low-level AMS/photonic devices but also the necessary interfaces with firmware and software.

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.
  • $186,000 - $246,000 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 are particularly looking for someone with expertise in architecting mixed-signal circuits to enable high-speed AMS circuits, with a strong preference for someone with experience in photonic circuits.

Visa & Work Authorization

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