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Lightmatter

Hardware Systems Engineer

Sorry, this job was removed at 10:09 p.m. (EST) on Tuesday, Sep 16, 2025
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In-Office
Boston, MA, USA
166K-245K Annually
In-Office
Boston, MA, USA
166K-245K Annually

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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 Role

We are hiring a Hardware System Engineer to help drive post-silicon planning and execution for some of the leading photonics based interconnect solutions. You will work alongside a team of world-class scientists and engineers in defining how the system will be optimized and trailblaze problems that are new to the industry. 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 analog designers, photonics engineers, computer architects, software engineers, and RTL 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
  • In depth analysis of PHY and optical link performance
  • Close collaboration with various teams to develop tuning and calibration algorithms for photonics and analog logic
  • Hands on post-silicon performance analysis and debug
  • Creation of post-silicon test cases and planning
  • Cross team functional post-si bring-up and execution
  • Behavioral modeling of photonics and analog circuits
  • Ability to run and analyze mixed signal simulations
Qualifications
  • Master’s in Electrical/Computer Engineering with a minimum of 7 years of industry experience
  • Expertise with modeling advanced systems in SystemVerilog
  • Expertise in Scripting - Python
  • Strong knowledge of optical link design architectures
  • Familiarity with ASIC design flows and FinFET technologies
  • Understanding of digital design concepts, including RTL coding in Verilog and running/debugging simulations
Preferred Qualifications
  • PhD degree in Electrical/Computer Engineering with a minimum of 3 years of industry experience
  • Expertise with modeling advanced systems in Python and C
  • Expertise Scripting in other languages such as C, Perl, or TCL

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

Salary Range
$166,000$245,000 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. 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. 

HQ

Lightmatter Boston, Massachusetts, USA Office

At Lightmatter, we have a flexible work structure; employees work remotely and work from our physical offices located in Boston, MA, and Mountain View, CA

What you need to know about the Boston Tech Scene

Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.

Key Facts About Boston Tech

  • Number of Tech Workers: 269,000; 9.4% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Thermo Fisher Scientific, Toast, Klaviyo, HubSpot, DraftKings
  • Key Industries: Artificial intelligence, biotechnology, robotics, software, aerospace
  • Funding Landscape: $15.7 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Summit Partners, Volition Capital, Bain Capital Ventures, MassVentures, Highland Capital Partners
  • Research Centers and Universities: MIT, Harvard University, Boston College, Tufts University, Boston University, Northeastern University, Smithsonian Astrophysical Observatory, National Bureau of Economic Research, Broad Institute, Lowell Center for Space Science & Technology, National Emerging Infectious Diseases Laboratories

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