SECTION I · THE BRIEF
Brief #21323Updated 08 JUL 2026BOSTON, MAGreenhouseSPARK CAPITAL
Employbl Company Profile

Hardware Verification Engineer — Electro-Optic Links

Lightmatter, Inc. operates as a computer hardware company. The Company provides hardware solutions to create computing platform purpose-built for artificial intelligence. Lightmatter serves clients in the United States.

Location
Boston, MA
Company size
50–200
Posted
3d ago
Via
Greenhouse
Section II · Premium ProfileMembers only
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked

7-day free trial · $25/mo · cancel anytime

Lightmatter logo

Hardware Verification Engineer — Electro-Optic Links - Lightmatter

View Company Profile
Job Title
Hardware Verification Engineer — Electro-Optic Links
Job Location
Boston, MA
Job Description

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. 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 Hardware Verification 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.

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 them against your own 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 without stepping back from lab work
  • Build automation/tools to speed up characterization work

Qualifications:

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

Preferred Qualifications:

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

We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

Salary Range: 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

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
  • Training & Development
  • Commuter Benefits
  • Flexible, hybrid workplace model
  • Equity grants (applicable to full-time employees)

Benefits eligibility may vary depending on your employment status and location. 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.

Export Control

Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws. 

Get the Saturday tech briefing

New company profiles, funding moves, and who’s hiring across the market — every Saturday morning.

Lightmatter Headquarters Location

Boston, MA

View company profile

Lightmatter Company Size

Between 50 - 200 employees

Lightmatter Founded Year

2017

Lightmatter Total Amount Raised

$822,000,000

Lightmatter Funding Rounds

View funding details
  • Series D

    $400M

  • Series D

    $400M

  • Series C

    $155M

  • Series C

    $155M

  • Series C

    $154M

  • Series C

    $154M

  • Series B

    $80M

  • Series B

    $80M

  • Series A

    $22M

  • Series A

    $22M

  • Series A

    $11M

  • Series A

    $11M

Lightmatter's Investors

Lightmatter's Industries

Lightmatter's Tech Stack

Company Collections For Lightmatter