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Added 17 mins ago
SH
Casual Infusion Nurse - Duncan, Langford, Courtenay, BC
Sentrex Health Solutions
Duncan, BC
- Part-time
Complete and maintain training for specific therapies by maintaining knowledge as per Health Canada’s Product Monograph, company policies & procedures
Added 17 mins ago
MR
Par-Time Sales Associate
Match Retail
Burnaby, BC
- $25 CAD / hour
- Part-time
…location. You will engage with customers, provide personalized product demonstrations, and ultimately inspire them to…
Added 17 mins ago
LT
Hair Stylist
Life Time
Mississauga, ON
- Full-time
Serves as an expert in hair analysis, maintenance regimens while staying current in style and technique
Added 17 mins ago
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[Disney Dreamlight Valley PC/Console] Analyste de données sénior - Senior Data Analyst
Gameloft
Montreal, QC
- Full-time
Agir comme expert(e) de la donnée pour Disney Dreamlight Valley en développant une compréhension approfondie du jeu, de son économie et de l'écosystème analytique de Gameloft
Added 17 mins ago
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Customer Success Manager - Canada
Buildots
Toronto, ON
- Full-time
…new projects within your portfolio, and then the successful product adoption across multiple users within the projects. We want to ensure the data Buildots offers becomes embedded into the…
Added 32 mins ago
SL
E-Commerce Shipping Associate (Seasonal, Part-Time)
Sporting Life Group
Burlington, ON
- Part-time
Vendor Pro Deals and expert product training to fuel your knowledge and performance.
Added 32 mins ago
SL
Cashier (Seasonal, Part-Time)
Sporting Life Group
Burlington, ON
- Part-time
Vendor Pro Deals and expert product training to fuel your knowledge and performance.
Added 32 mins ago
SL
Sales Associate, Footwear (Seasonal, Part-Time)
Sporting Life Group
Burlington, ON
- Part-time
Vendor Pro Deals and expert product training to fuel your knowledge and performance.
Added 32 mins ago
SL
Sales Associate, Hardgoods (Seasonal, Part-Time)
Sporting Life Group
Burlington, ON
- Part-time
Vendor Pro Deals and expert product training to fuel your knowledge and performance.
Added 32 mins ago
SD
Merchandiser, Hourly Part Time Flexible Shifts Greenlight Requisition
Shoppers Drug Mart
Kitimat, BC
- Part-time
Expert in assigned areas of product inventory, product placement and expiry dates
Added 32 mins ago
SD
Merchandiser, Hourly Part Time Day
Shoppers Drug Mart
Toronto, ON
- Part-time
Expert in assigned areas of product inventory, product placement and expiry dates
Added 32 mins ago
SD
Merchandiser, Hourly Full Time Day
Shoppers Drug Mart
Chilliwack, BC
- Full-time
Expert in assigned areas of product inventory, product placement and expiry dates
Added 32 mins ago
SD
Merchandiser, Hourly Part Time Day
Shoppers Drug Mart
Chilliwack, BC
- Part-time
Expert in assigned areas of product inventory, product placement and expiry dates
Added 32 mins ago
SD
Merchandiser, Hourly Part Time Evening
Shoppers Drug Mart
Ajax, ON
- Part-time
Expert in assigned areas of product inventory, product placement and expiry dates
Added 32 mins ago
SD
Merchandiser, Hourly Part Time Flexible Shifts
Shoppers Drug Mart
London, ON
- Part-time
Expert in assigned areas of product inventory, product placement and expiry dates
Added 32 mins ago
SD
Merchandiser, Hourly Part Time Day Greenlight Requisition
Shoppers Drug Mart
Windsor, ON
- Part-time
Expert in assigned areas of product inventory, product placement and expiry dates
Added 32 mins ago
SI
Wireless Sales Consultant
Staples Inc.
Sherwood Park, AB
- Full-time
Help customers by meeting and exceeding their needs. Be an expert with our product and services. Reconnect and follow up with customers to solicit feedback on sales; promote additional…
Added 47 mins ago
UM
Engineering Technician II
Ultra Maritime
Dartmouth, NS
- Full-time
We thrive on collaboration and partnering with our customers to ensure mission success. Our expert solutions encompass an array of game-changing technologies, including state-of-the-art…
Added 47 mins ago
CT
Senior Applied AI Scientist, Advanced Analytics & Modelling - Customer Intelligence
Canadian Tire Corporation
Toronto, ON
- Full-time
…experimentation into production and become a go-to technical expert on the models and how their outputs should be…
Added 47 mins ago
A
Design Aérostructure / Airframe Design
Airbus
Mirabel, QC · Montreal, QC
- Full-time
Compétence Numérique : Maîtrise de niveau expert de CATIA V5 et des outils de gestion du cycle de vie des produits (par exemple, ENOVIA).
Added 47 mins ago
SC
Wireless Sales Consultant
Staples Canada
Ottawa, ON · Nepean, ON
- Part-time
Help customers by meeting and exceeding their needs. Be an expert with our product and services. Reconnect and follow up with customers to solicit feedback on sales; promote additional…
Added 47 mins ago
E
Business Analyst (Distribution)
Equisoft
Montreal, QC · Quebec, QC · HYBRID - Montreal, Canada
- Full-time
…approach, deep industry knowledge, innovative technology, and expert teams help our partners solve their biggest, most complex problems. With are diverse and multicultural team of experts…
Added 47 mins ago
GM
[Disney Dreamlight Valley PC/Console] Analyste de données sénior - Senior Data Analyst
Gameloft Montreal
Montreal, QC
- Full-time
Agir comme expert(e) de la donnée pour Disney Dreamlight Valley en développant une compréhension approfondie du jeu, de son économie et de l'écosystème analytique de Gameloft
Added 47 mins ago
D
Sales Associate (Sherbrooke) - Permanent Full Time
Dormez-vous
Sherbrooke, QC
- Full-time
…difference in the lives of our customers and become a true Sleep…
Added 1 hour ago
Actuarial Expert - Alberta Auto Pricing
Wawanesa Insurance
Calgary, AB · AB · Lethbridge, AB · Lloydminster, AB · Vancouver, BC · Winnipeg, MB · Moncton, NB · Dartmouth, NS · Kitchener, ON · Ottawa, ON · Thunder Bay, ON · Toronto, ON · Montreal, QC · North York - Toronto, ON (Hybr, ON · Edmonton, AB (Hybrid), AB
The Actuarial Expert leverages strong technical actuarial skills and business acumen to drive critical growth and profitability projects in Wawanesa's critical Alberta Auto product segment.…

Lightmatter

Machine Learning Infrastructure Researcher

Toronto, ON, Canada

Full-time

Apply About employer

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Job details

Job type: Full-time
Apply by: Dec 4, 2026
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.

Apply About employer

More about this job

Responsibilities

Develop tools to model the performance of Passage-enabled systems on AI training and inference workloads, and collaborate with product and solutions architecture teams to design customer reference platforms. Lead a small team, contribute to research publications and other technical content, and serve as the machine learning expert across the organization.

Requirements

Requires a PhD in Computer Science, Electrical Engineering, or a related field, with at least 10 years of industry or research experience. Candidates should have machine learning systems research and performance modeling expertise, hands-on deep learning experience, extensive knowledge of LLM training and inference frameworks, relevant publications, and strong knowledge of AI compute and networking systems; a track record of leading a team to publish results is also required.

Skills

Machine Learning Systems Research
Performance Modeling
Performance Evaluation
Large Language Model Training
Large Language Model Inference
Deep Learning
AI Systems
GPU and TPU Systems
Networking Technologies
System Topologies
Academic Publishing
Team Leadership
Technical Communication
First-Principles Thinking

Benefits

Health Care Plan
Life Insurance
Paid Time Off
Paid Family Leave
Short-Term Disability
Long-Term Disability
Training and Development
Commuter Benefits
Flexible Hybrid Workplace
Equity Grants

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
Machine Learning Systems Research
Artificial Intelligence
High-Performance Computing
Passage
Silicon Photonics
Data Center Infrastructure
Performance Modeling
Performance Evaluation
Training Workloads
Inference Workloads
Large Language Models
Deep Learning
GPUs
TPUs
Ethernet
InfiniBand
NVLink
System Topologies
Reference Platforms
Rack-Scale Designs
Academic Publications
Whitepapers
Research Leadership
Team Management

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