Hiring.Camp

Machine Learning Systems Researcher

Lightmatter

·

Oct 14, 2025

Location
Mountain View, CA
Department
Machine Learning
Education
PhD
Source
Greenhouse

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!

Lightmatter is seeking a Machine Learning Systems Researcher to join our Machine Learning team. This team is focused on inventing novel hardware systems using Lightmatter technology, and modeling the performance of Lightmatter-enabled systems on both training and inference workloads.

This is primarily a creative role where you need to think outside the box to push the boundaries of systems research with the power of silicon photonics at your fingertips. This role will work closely with our product, solutions architecture, and engineering teams to generate impactful performance analysis, create high-performance rack-scale designs, and publish cutting-edge ML systems research.

Responsibilities

  • Stay up to date on the latest advancements in Machine Learning research.
  • Build tools to model the performance of Passage-enabled systems when running both training and inference workloads for the latest AI models.
  • Collaborate with our product and solutions architecture teams to design compelling reference platforms for our customers, powered by Lightmatter technology. 
  • Function as the Machine Learning expert in the room.
  • Publish academic papers at top industry conferences and journals. Help support the publication of whitepapers, blog posts, and other marketing collateral.

Qualifications

  • PhD in Computer Science, Electrical Engineering, or a related field.
  • 2 - 5 years of industry and/or research experience in the field.
  • Solid background in Machine Learning  systems research and experience with performance evaluation and performance modeling.
  • Hands-on experience with machine learning / deep learning methods and extensive knowledge of Large Language Model training and inference frameworks.
  • Academic publications in relevant journals and industry conferences.
  • Must have knowledge of AI systems, including compute (GPUs, TPUs, etc.) and networking (Ethernet, Infiniband, NVLink, etc.) technologies, and their various topologies, paradigms, and trade-offs.
  • Ability to independently own projects from conception to completion.

Preferred Qualifications

  • Demonstrated ability to creatively problem-solve and apply first-principles thinking to generate novel ideas, particularly in ambiguous, evolving environments.
  • Exceptional skills in communicating complex research outcomes and technical concepts to partners and internal stakeholders, while embodying our value of speaking truth.
  • Ability to work across research, product, and business functions, rolling up your sleeves to bridge gaps and accelerate outcomes, while demonstrating the core value of "we are one Lightmatter."
  • Adaptable and versatile, thriving in a high-speed, high-precision environment.

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.
$186,000$240,000 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. 

Skills

Machine LearningDeep Learning

Similar Jobs

30

Machine Learning Systems Engineer

RFS Group · Remote, Onsite

5 days ago

Senior Machine Learning Systems Engineer, Ads ML Experience Platform

Reddit · Remote - United States · Remote

1 week ago

Lead Business Analyst, Algo and Machine Learning Systems

Citicclsa · Hong Kong - One Pacific Place

1 week ago

Machine Learning Systems Engineer, Networking

Nvidia · US, CA, Santa Clara, United States of America

1 month ago

Machine Learning Systems Engineer, Ads ML Platform

reddit · Remote - The Netherlands +1 · Remote

1 month ago

Machine Learning Systems Engineer, Ads ML Platform

reddit · Remote - United Kingdom +1 · Remote

1 month ago

Senior Machine Learning Systems Engineer, Ranking Platform

reddit · Remote - United States · Remote

2 months ago

Machine Learning Systems Engineer, Networking

Nvidia · Santa Clara, CA,US, US

3 months ago

Python Software Engineer - Machine Learning Systems (m/f/d)

CUJU · Germany · Remote

3 months ago

Machine Learning Systems & Infrastructure Engineer

SpAItial · London +1 · Onsite

3 months ago

Scientist – Digital Discovery: Biological Data Systems & Machine Learning

Amgen is committed to unlocking · Canada - Burnaby · Onsite

3 months ago

Staff Machine Learning Systems Engineer

reddit · Remote - United States · Remote

5 months ago

Senior Machine Learning Systems Engineer

reddit · Remote - United States · Remote

5 months ago

Research Engineer, Machine Learning Systems

Deepgram · USA | Remote +2 · Remote

5 months ago

Machine Learning Systems Research Engineer, Agent Post-training - Enterprise GenAI

Scaleai · San Francisco, CA; New York, NY +1

9 months ago

Distinguished Engineer, Machine Learning Systems – Economy

Roblox · Remote

10 months ago

Principal Business Analyst, Algo and Machine Learning Systems, IT

Citicclsa · Hong Kong - One Pacific Place

11 months ago

Perennial Systems- Machine Learning Engineer

Nexthire · Remote · Remote

1+ year ago

Backend Engineer AI / Machine Learning (Agentic Systems)

Ing · HBP (Amsterdam - Haarlerbergpark), Netherlands · Hybrid

4 days ago

Working Student - Machine Learning/Agentic Systems

ramblr.ai · Pullach im Isartal, Bayern

3 months ago

Systems Engineer - Machine Learning

General Robotics · Redmond, WA · Onsite

4 months ago

AI/Machine Learning Engineer (Embedded Systems, Inference Efficiency)

Qualcomm · Markham, ON,CA, CA

2 weeks ago

Senior Machine Learning Engineer, Agentic Systems - Moveworks

ServiceNow · Mountain View, CALIFORNIA, United States

3 weeks ago

Machine Learning Engineer, Agentic Systems - Moveworks

ServiceNow · Mountain View, CALIFORNIA, United States

1 month ago

Senior Machine Learning Engineer (Large Systems)

Graphcore · Gdańsk, Pomeranian Voivodeship, Poland +3

1 month ago

Senior Machine Learning Engineer, Agentic Systems - Moveworks

ServiceNow · Mountain View, CALIFORNIA, United States

2 months ago

Senior Machine Learning Engineer, Agentic Systems - Moveworks

ServiceNow · Mountain View, CALIFORNIA, United States

3 months ago

Postdoctoral Fellow - Applied Machine Learning in Quantum Systems

Queracomputinginc · Boston, MA USA +1

5 months ago

Staff Machine Learning Engineer, Agentic Systems - Moveworks

ServiceNow · Mountain View, CALIFORNIA, United States

6 months ago

Staff Machine Learning Engineer - Recommendation Systems

Glance · Bangalore +1

7 months ago