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Added 11 mins ago
J
Senior Forward Deployed Engineer
Justworks
Toronto, ON
- $167,500 to $235,000 CAD / year
Added 11 mins ago
P
Senior Associate SIEM Implementation
PwC
Calgary, AB · Vancouver, BC · Ottawa, ON · Toronto, ON · Montreal, QC
- Full-time
Added 11 mins ago
P
Forensic & Dispute Services  Senior Associate (Bilingual FR/EN)
PwC
Montreal, QC · Quebec, QC
- Full-time
Prepare various detailed analysis including financial analysis, develop data analytics procedures/scripts when required
Added 11 mins ago
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Frontline Strategy Business Partner (12 month contract)
EcoVadis
Toronto, ON
- Contract
Added 11 mins ago
LH
Business Analyst
LGI Healthcare Solutions Santé Inc.
Montreal, QC
- Full-time
Added 11 mins ago
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[Disney Dreamlight Valley PC/Console] Analyste de données sénior - Senior Data Analyst
Gameloft
Montreal, QC
- Full-time
Reporting to the Live Ops Studio Lead, you will serve as the team's go-to analytics expert. You will directly influence game strategy through in-depth analysis while helping grow the…
Added 11 mins ago
GD
AI Governance & Risk Manager
General Dynamics Missions System International
Ottawa, ON
- $120,000 to $160,000 CAD / year
- Full-time
Added 11 mins ago
AI
Data & Analytics Leader - BFSI, AI Transformation
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
- Full-time
We are seeking an experienced Data & Analytics Leader to help shape and grow enterprise transformation programs across the financial services sector. This role brings together data…
Added 11 mins ago
AC
Project Accountant
Accenture Construct
Toronto, ON
- Full-time
Added 11 mins ago
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Supply & Demand Planner
Vestacy
ON · Ontario, Canada
- Full-time
Added 11 mins ago
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Senior WMS Implementation Engineer
Hays
Canada
- $95 to $100 CAD / hour
- Contract
…units in accelerating the growth and application of advanced analytics in driving value. The senior data scientist will leverage practical experience in applying varied data science…
Added 11 mins ago
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Information Technology - Senior/Lead, Data Visualization Engineer, Product Business Technology
Aritzia
Vancouver, BC
- Full-time
…design, build, deliver, and operate scalable technology, data, analytics, and AI solutions that align with the strategic objectives of Product…
Added 26 mins ago
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Senior Applied Machine Learning Scientist
TD
Toronto, ON
- Full-time
Analytics, Insights, & Artificial Intelligence
Added 26 mins ago
AI Engineer
Eclipse Automation
Cambridge, ON
Added 26 mins ago
INVESTIGATIVE ANALYST (CONTRACT)
Green Shield Canada
Calgary, AB · Toronto, ON · Windsor, ON
Produce executive-level reporting and analytics that translate complex investigative findings, emerging risks, and fraud trends into actionable business insights and strategic…
Added 26 mins ago
C&
Senior Financial Analyst – Sales
Church & Dwight Co., Inc.
Mississauga, ON
- Full-time
Added 26 mins ago
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Java Developer or Python Developer with Data Lineage and meta data
I8IS - Infiniti Software Solutions
Mississauga, ON
- Full-time
Added 26 mins ago
LH
Business Analyst
LGI Healthcare Solutions
Montreal, QC
- Full-time
Added 26 mins ago
LM
Senior Compensation Analyst, Total Rewards
Liberty Mutual Canada
Toronto, ON
- Temporary
Added 26 mins ago
MQ
Bilingual QA Analyst
Miipe Quality Solutions
Markham, ON
- $60,000 to $63,000 CAD / year
- Full-time
Added 26 mins ago
T
Senior Machine Learning Engineer
TEEMA
Toronto, ON
- Contract
Added 26 mins ago
ZS
DevOps Architect
Zodiac Solutions, Inc
Toronto, ON
- Full-time
a. Using Azure Monitor, Log Analytics, and Application Insights for performance monitoring and optimization.
Added 26 mins ago
FI
Manager, Campaign Analytics - SQL, Pega/ TSYS CDH
FP Inc.
Toronto, ON
- $50 to $65 CAD / hour
- Contract
Campaign Strategy, Audience Analytics & Optimization
Added 41 mins ago
C
Database developer Smartstream TLM SME Senior Engineer
Citi
Mississauga, ON
- Full-time
Utilize strong technical skills in Oracle PL/SQL, MS SQL Server, Linux, and data analytics/reporting tools to support solution delivery and issue resolution.
Added 41 mins ago
CT
Senior Applied AI Scientist, Advanced Analytics & Modelling - Customer Intelligence
Canadian Tire Corporation
Toronto, ON
- Full-time
…Personalization, marketing, merchandising, dealer and broader customer analytics use…

Lightmatter

Machine Learning Infrastructure Researcher

Toronto, ON, Canada

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Job details

Experience: PhD in Computer Science, Electrical Engineering, or a related field and at least 10 years of industry or research experience in the field.
Posting language: English
Posted: Nov 4, 2026

Original 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!

Lightmatter is seeking a Principal of Machine Learning Infrastructure 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.
Lead a small team of Machine Learning engineers

Qualifications:

PhD in Computer Science, Electrical Engineering, or a related field and at least 10 years of industry 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.
Strong knowledge of AI systems, including compute (GPUs, TPUs, etc.) and networking (Ethernet, Infiniband, NVLink, etc.) technologies, and their various topologies, paradigms, and trade-offs.
Proven track record leading a team to deliver published results.

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.
Experience in managing engineers and leading projects, with the ability to lift up the team, and work with high standards and high collaboration.

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.

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More about this job

Responsibilities

The role involves inventing novel hardware systems using Lightmatter technology and modeling the performance of these systems for AI training and inference workloads. You will also lead a team of machine learning engineers and collaborate with product and architecture teams to design reference platforms.

Requirements

Candidates must hold a PhD in Computer Science, Electrical Engineering, or a related field with at least 10 years of industry or research experience. A strong background in machine learning systems research, performance modeling, and experience with large language model frameworks is required.

Skills

Machine Learning
Systems Research
Performance Modeling
Deep Learning
Large Language Models
Silicon Photonics
AI Infrastructure
Performance Evaluation
Compute Architectures
Networking Technologies
GPU
TPU
Ethernet
Infiniband
NVLink
Team Leadership

Benefits

Comprehensive Health Care Plan
Life Insurance
Generous Time Off
Paid Family Leave
Short Term Disability
Long Term Disability
Training & Development
Commuter Benefits
Flexible, Hybrid Workplace Model
Equity Grants

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
Infrastructure
Photonics
Passage
AI
HPC
Silicon Photonics
Performance Analysis
Rack-scale Design
Deep Learning
Large Language Models
GPU
TPU
Ethernet
Infiniband
NVLink
Systems Research
Performance Modeling
Academic Research
Whitepapers
Team Leadership
Computer Science
Electrical Engineering
Data Center
Inference
Training

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