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Company profile

Lightmatter Tech Stack

Silicon photonics interconnects and compute hardware for high-bandwidth systems

Computer Hardware Manufacturing Mountain View, California 201–500 employees Founded 2017 Privately Held
lightmatter.co LinkedIn

Lightmatter is a Mountain View hardware company building silicon photonic interconnects, centered on its Passage product line. Its stack spans analog and RF design (Cadence Virtuoso, Spectre, Keysight ADS, Verilog-A), timing signoff (Tempus, Synopsys), and board-level tooling (OpenBMC, JTAG, I2C, CMIS), which points to full system delivery rather than chip IP alone. Hiring is overwhelmingly senior and staff engineering, and recurring pain points center on moving into high-volume manufacturing.

Tech Stack 113 technologies

Core StackC++ Python Java NumPy SolidWorks Verilog-A GDB JTAG CMIS OpenBMC Keysight ADS Spectre Virtuoso Cadence Synopsys Tempus Tcl Perl SciPy KLayout pytest Silicon Photonics I2C Puppet Development Kit SerDes Cadence Virtuoso BERT Creo ANSYS Abaqus+83 more

What Lightmatter Is BuildingChallenges and projects from their job posts

◆Challenges

  • Transitioning to high-volume manufacturing and delivery
  • Closing the simulation-to-silicon gap
  • Complex digital, analog and photonics domain interactions
  • Meeting performance at every process corner
  • Scaling photonic interconnects and accelerating development

▲Active Projects

  • Passage high-bandwidth photonic interconnect fabric
  • Device software stack for photonic compute
  • Control plane architecture for photonic interconnects
  • High-speed analog transceivers for optical and wireline
  • Performance modeling of Passage-enabled systems
  • Reference platform design

Hiring Activity

Decelerating65 roles · 10 in 30d

Department

Engineering
59
HR
1
Manufacturing
1
Research
1
Sales
1

Seniority

Senior
24
Staff
24
Mid
7
Principal
6
Intern
1
Lead
1

Notable leadership hires: Hardware Systems Lead

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About Lightmatter

Lightmatter, founded in 2017 and headquartered in Mountain View, California, develops photonic computing and interconnect hardware. Its core product, Passage, is a high-bandwidth photonic interconnect and communication fabric for next-generation computing systems. The company works across digital, analog and photonic domains, from transceiver circuits and device firmware to reference platform design. It is privately held, employs 201–500 people, and recruits primarily in the United States and Canada.

HeadquartersMountain View, California
Company Size201–500 employees
Founded2017
Hiring MarketsUnited States, Canada

Frequently Asked Questions

What does Lightmatter's Passage product do?

Passage is Lightmatter's photonic interconnect product. Job posts describe a high-bandwidth photonic communication fabric, plus control plane architecture, a device software stack, and performance modeling of Passage-enabled systems.

What EDA tools does Lightmatter use?

Lightmatter uses Cadence Virtuoso, Spectre, Tempus, Synopsys, Keysight ADS and KLayout, along with Verilog-A, Tcl and Perl for analog, photonic and digital chip design workflows.

Where does Lightmatter hire engineers?

Lightmatter hires in the United States and Canada. Openings are concentrated in engineering at senior, staff and principal levels, and a Hardware Systems Lead role is open.

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How this profile is built

Lightmatter's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.