Demo

Principal Photonics Design Engineer

Lightmatter
Boston, MA Full Time
POSTED ON 4/26/2025
AVAILABLE BEFORE 5/22/2025

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 Role

In this role, you will design, develop, build, and test photonic systems that are key to our products. You will also interact with device, hardware, and software design teams to assist in the overall development of photonic systems, specifying, selecting, and qualifying the various components necessary.

Join a tight-knit team where each individual's contributions directly influence the success of the company and our innovative products! You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities

  • Design high-performance photonics devices suitable for high-volume manufacturing
  • Analyze characterization data to drive improvements on photonics devices and ensure the device / system meets the specifications
  • Design of Active and Passive devices including modulators, photodiodes and tunable filters
  • Engage in problem solving and contributing with novel architectural ideas
  • Actively collaborate across disciplines-with analog, digital, and physical design teams-to layout photonic devices for key test and product tape outs
  • Work with the photonics test team in defining requirements for device characterization, debug and validation
  • Publish and novel ideas related to photonics, and participate in premier optics / photonics conferences

Qualifications

  • 12 years of related experience with a Master's degree; or 8 years with a PhD
  • Demonstrated track record of design integrated silicon photonics components using Lumerical, Tidy3D or equivalent
  • Experience with code based GDS creation such as GDS Factory or similar
  • Experience with large scale layout, testing and characterization of photonic devices
  • Experience with PDK and Cadence environments a plus
  • Ability to collaborate in cross-disciplinary team
  • Excellent written and verbal communication skills
  • Demonstrate strong problem solving skills in problems that do not have obvious solutions
  • Can-do, positive attitude
  • Strong publication record in the photonics field a plus
  • We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

    Salary Range

    230,000-$265,000 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
  • 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.

    Salary : $230,000 - $265,000

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