← All jobs · Lightmatter

Principal Product Engineer

Lightmatter ·
31
AI-Agency
B35 U25
📍 Mountain View, US 🌐 Remote/hybrid 💰 $202K–$251K Principal 12+ yrs
PythonCJavaRubySQLJMPSnowflake
TL;DR

Principal Product Engineer at Lightmatter leading semiconductor product development from silicon to high-volume manufacturing. Focus on yield optimization, DFT strategy, test planning, and cross-functional collaboration across design, foundry, and packaging teams.

Apply at Lightmatter →
share:
you'll be redirected to the company's career page

Job description

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!

 The Product Engineer role is pivotal to Lightmatter’s mission, sitting at the center of product delivery and operational excellence. This position offers a unique opportunity for end-to-end ownership, where you will define the product engineering landscape from the ground up and drive the strategic direction for our hardware portfolio. You will collaborate with cross-functional teams (design, foundry, packaging, test, validation, reliability) to optimize manufacturing flows, improve yield and quality, and reduce costs. The role's focus areas include: optimizing Yield & Quality, implementing DFx principles, and managing the product from initial silicon to high-volume manufacturing (HVM). The core responsibilities are specifically centered on optimizing manufacturing flows, yield Improvement, and Test Point Optimization.

 

 

Qualifications

 

Preferred:

 

The salary range for this position reflects two distinct internal levels. The lower half of the range applies to candidates meeting the core requirements, while the upper half is reserved for those who bring the additional specialized experience or extensive years of experience required for our senior-level designation.

 

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

Salary Range: total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.
$202,000$251,000 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 and location. 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. 

Apply at Lightmatter →

More open roles at Lightmatter

Lightmatter · 🔄 synced 8h ago
Principal Machine Learning Infrastructure Researcher
📍 Toronto, CA 🌐 Remote · Principal
Principal ML Infrastructure Researcher at Lightmatter building performance modeling tools for photonics-enabled AI systems. Focus on ML systems research, hardware-software co-design, and leading a small research team.
PyTorchTensorFlowGPUsTPUsInfinibandNVLink
83
AI-core
Lightmatter · 🔄 synced 8h ago
Principal Machine Learning Infrastructure Researcher
📍 Mountain View, US 💰 $300K–$350K · Principal
Principal Machine Learning Infrastructure Researcher at Lightmatter building performance modeling tools and systems research for photonics-enabled AI data centers. Lead a small ML engineering team and publish research on training/inference workloads.
GPUsTPUsEthernetInfinibandNVLinkLLM training frameworks
79
AI-core
Lightmatter · 🔄 synced 8h ago
Staff Digital Design Engineer
📍 Toronto, CA 💰 $119K–$133K · Staff
Staff Digital Design Engineer at Lightmatter developing ASICs for AI accelerators. Focus on microarchitecture, RTL design, and integrating silicon photonic technology into next-generation compute systems.
ASIC designRTLVerilogSystemVerilogHBMDDR5
58
AI-fluent
Lightmatter · 🔄 synced 8h ago
Senior Digital (Mix Signal) Architect
📍 Boston, US 💰 $219K–$270K · Senior
Senior Mixed-Signal Digital Architect at Lightmatter designing digital circuits for photonic-based AI data center infrastructure. Responsible for architecture from concept through production, integrating high-speed analog, mixed-signal, and photonic circuits with firmware/software interfaces.
SerDesDSPFECCRCRTLphotonic circuits
57
AI-fluent
Lightmatter · 🔄 synced 8h ago
Chip Architecture Leader
📍 Boston, US 🌐 Remote 💰 $247K–$337K · Director
Head of Chip Architecture at Lightmatter leading the design of photonics-based AI data center interconnect chips. Requires PhD in EE/Physics, 10+ years experience, and proven track record shipping multiple chip architectures to production.
Silicon photonicsSerDesoptical transceiverselectro-optic interfacesfiber-optic communications
57
AI-fluent