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Quality & Reliability, Intern Summer 2027

Lightmatter invented the world

Lightmatter invented the world's first 3D-stacked photonics engine to connect processors at the speed of light in AI data centers.

Lightmatter invented the world is the employer — EngRadar is a job radar, not a recruiter. We track this posting from their own careers page and send you straight there; we never handle applications or CVs.

Mountain View, CA Posted 1d ago aidatacenterphotonics
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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!

About this job 

This team makes sure Lightmatter’s products hold up in the real world AI data centers. As an intern you’ll build and automate test setups, run real reliability experiments, and present your data to the engineers who design the product — mentored by our reliability and test team in the Mountain View lab.

Responsibilities:

  • Perform reliability and characterization tests on photonic and electronic hardware.
  • Set up test stations and write Python automation scripts and instrument drivers.
  • Analyze test data and present findings to key stakeholders.
  • Support failure analysis by isolating root causes and documenting results.
  • Maintain test procedures and contribute to reliability reports and qualification plans.

Requirements: 

  • Currently pursuing a Bachelor’s in Electrical Engineering, Mechanical Engineering, Computer Science, or a related field
  • Basic knowledge of test automation tools, python is preferred
  • Familiarity with hardware testing equipment such as oscilloscopes, multimeters, and thermal sensors
  • Understanding of basic electronics, circuits, and embedded systems
  • Strong problem-solving and analytical skills
  • Ability to work in a hands-on lab environment
  • Willingness and curiosity to learn from an exciting team!

Preferred Qualifications

  • Coursework or projects in optics, photonics, or semiconductor devices
  • Experience with instrument control protocols (SCPI, VISA, GPIB) or data-acquisition hardware
  • Exposure to reliability or qualification concepts (e.g., thermal cycling, HTOL, failure analysis)
  • Experience working in a lab environment

Our internship hourly rates are a standard pay determined based on the position and your location, year in school, degree, and experience.

Hourly Rate in USD
$43—$47 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. 

Posted by Lightmatter invented the world on their own careers page — you apply directly, no recruiter in between. View original / apply →

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