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Lightmatter Principal Electro-Optical IC Design Engineer (Boston or Mountain View) in Boston, Massachusetts

Principal Electro-Optical IC Design Engineer

Lightmatter builds chips for artificial intelligence computing that leverage unique properties of light for efficient computing and communications. If you're a collaborative engineer or scientist who has a passion for innovation, solving challenging technical problems, and doing impactful like building the world's first optical computers, consider joining the team at Lightmatter!

Join a tight-knit team where each individual’s contributions directly influence the company's and product's success. 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.


  • Collaborate with our product development teams (system, packaging, digital, photonics) to translate system-level requirements into electrical design specifications down to the block and micro-architecture level

  • Working closely with our system-level architects, contribute to circuit-level assessments and design tradeoffs for high-performance electro-optic data links

  • Design of high speed data rate communications blocks including electrical SerDes, sub-components such as PLLs, CDRs, digital or analog equalizers and optical transceivers

  • Work closely with the physical design group to integrate analog IP at the chip level

  • Define and run top-level verification and modeling of analog and mixed-signal systems from behavioral model to transistor level

  • Define test plans (validation/characterization/debug)

  • Mentor junior engineers


  • BSEE minimum, PhD preferred with 12+ years of analog and mixed-signal design experience

  • Hands-on experience with the design of high-performance low-noise linear TIAs and drivers for silicon photonics modulators at 112G and 224G PAM-4 data rates

  • Hands-on experience with link budget modeling and tradeoffs for electro-optical links

  • Experience with developing mixed-signal products based on advanced FinFET foundry process nodes

  • Hands-on experience with Cadence design tools for circuit design and simulation including corner and Monte-Carlo simulations

  • Experience with multiple successful mixed-signal product designs released into volume production meeting target performance and yield requirements

  • Excellent understanding of design and layout techniques to optimize for speed, power including minimizing noise and crosstalk in high-performance circuits

  • Excellent understanding of noise, jitter, layout parasitics, mismatch, and design tradeoffs

  • Fluency in English Language, both written and verbal


  • Comprehensive Health Care Plan (Medical, Dental & Vision)

  • 401k matching

  • Life Insurance (Basic, Voluntary & AD&D)

  • Generous Time Off (Vacation, Sick & Public Holidays)

  • Paid Family Leave

  • Short Term & Long Term Disability

  • Training & Development

  • Flexible, hybrid workplace model

  • Stock Option Plan

Base Compensation Range: $225,000 to $275,000. In accordance with the Colorado, California and New York law, the range provided is Lightmatter's reasonable estimate of the compensation for this role. Actual pay will be based on several factors including work experience, location and education.

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.