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 are hiring a Digital Design Engineer to help develop an ASIC for the next-generation artificial intelligence computing architecture alongside a team of world-class scientists and engineers. If your passion is innovation, solving challenging technical problems, and doing impactful work, you should join our team and help build the world's first optical computers!

In this job, you will work in close collaboration with computer architects, software engineers, verification engineers, and physical design engineers to design innovative compute accelerators that work with photonic technology to power the growing AI/ML workloads that customers want while keeping power low. This will be a great opportunity to define the next advance in computer architecture!

Responsibilities

  • Develop microarchitecture design and RTL for advanced ML/AI accelerator ASICs/SoCs including advanced memory system and high-performance NoC.
  • Understand and integrate silicon photonic communication and compute technology into digital accelerator design.
  • Actively work with Architecture, Design Verification, Implementation, Photonic, Analog, and Software teams to realize high-performance, low-power designs in advanced technology nodes.
  • Create design specifications and documentation to facilitate collaboration with partner teams.
  • Manage RTL implementation to achieve functionally correct, performant designs within project schedules by identifying, communicating, and mitigating risks.

 

Qualifications:

  • 12 years of related experience with a Bachelor’s degree; or 8 years and a Master’s degree in Electrical or Computer Engineering (or related fields)
  • 4 years of experience with SystemVerilog
  • Experience in ASIC design with multiple successful tape outs
  • Familiarity with high-speed digital design techniques
  • Familiarity with power-efficient digital design techniques

 

Preferred Qualifications:

  • Experience in communication protocols (e.g. PCIe)
  • Experience interfacing with memory systems (e.g. HBM/DDR5)
  • Knowledge of processor design, accelerators, and/or memory hierarchies
  • Knowledge of machine learning algorithms

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
  • Stock Option Plan

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.

 

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