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Added 10 mins ago
LC
Gérant de service et caisses
Loblaw Companies Limited
Gatineau, QC
- Full-time
Train and develop department associates in customer service, product knowledge, and merchandising
Added 10 mins ago
AC
Sales Associate
Ashley Canada
Kitchener, ON
- Full-time
Stay on top of product knowledge, trends, and competitor offerings
Added 10 mins ago
P
Outbound Product Manager – 12 month contract
PointClickCare
Mississauga, ON
- Contract
Job Title: Outbound Product Manager – 12 month contract
Added 10 mins ago
CT
Senior ML/AI Engineer, Advanced Analytics & Modelling - Customer Intelligence Platforms
Canadian Tire Corporation
Toronto, ON
- Full-time
The successful candidate will lead the transition of the third party-developed engine into a fully owned CTC capability. This includes mastering the existing code, prompts, models, data…
Added 10 mins ago
C
Product Engineer (Cabico Coaticook)
Cabico
Sherbrooke, QC
- Full-time
Engineer our products with our plant’s and machines’ capabilities in mind, to build a quality product at the best cost and in the shortest lead time.
Added 10 mins ago
C
Product Engineer (Cabico Coaticook)
Cabico
Coaticook, QC
- Full-time
Engineer our products with our plant’s and machines’ capabilities in mind, to build a quality product at the best cost and in the shortest lead time.
Added 10 mins ago
A
Design Aérostructure / Airframe Design
Airbus
Mirabel, QC · Montreal, QC
- Full-time
Added 10 mins ago
E
Business Analyst (Distribution)
Equisoft
Montreal, QC · Quebec, QC · HYBRID - Montreal, Canada
- Full-time
Participate in pre-planning sessions with the Development Team Lead and Product Owner to define next sprint priorities.
Added 10 mins ago
R
Brand Director
Rates.ca
Toronto, ON
- Full-time
…We help Canadians make informed financial decisions through product comparisons, original content, and user-friendly financial tools. We partner with leading insurers, banks, credit unions,…
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HD
Project Coordinator
Hospitality Designs
Richmond, BC
- Full-time
Track product availability, lead times, order confirmations, and estimated completion dates.
Added 10 mins ago
GM
[Disney Dreamlight Valley PC/Console] Analyste de données sénior - Senior Data Analyst
Gameloft Montreal
Montreal, QC
- Full-time
Relevant du Live Ops Studio Lead, vous serez la référence analytique de l'équipe. Vous contribuerez directement aux décisions stratégiques du jeu grâce à des analyses approfondies, tout en…
Added 10 mins ago
TH
Clinical Research Project Coordinator
The Hospital for Sick Children
Toronto, ON
- Full-time
…healthcare centres in the world. As innovators in child health, we lead and partner to improve the health of children through the integration of healthcare, leading-edge research and…
Added 10 mins ago
NF
Grocery Team Leader
Nature's Fare Markets
Kelowna, BC
- Full-time
Walk the walk and talk the talk! Working with the Grocery Manager, you will help lead the grocery team by example, providing exceptional customer service and building a positive team…
Added 10 mins ago
CO
Associate Manager, Communications
Canadian Olympic Foundation
Toronto, ON
- Full-time
Lead Canadian Olympic Foundation key messaging and ensure alignment with COC corporate messaging and communications strategy.
Added 10 mins ago
GE
Afternoon Warehouse Manager - Distribution Centre
Gerrie Electric Wholesale Ltd.
Burlington, ON
- Internship
Experience managing personnel, including scheduling, payroll, and vacation planning, with the ability to lead, support, and hold teams accountable.
Added 24 mins ago
S
Consumer Experience (CX) Strategy lead
Sanofi
Toronto, ON
- Full-time
The Consumer Experience (CX) Strategy lead provides the end-to-end consumer experience strategy and digital solutions for Sanofi patients, customers, and staffs to work seamlessly and…
Added 24 mins ago
F
Products & Service Sales Manager
Finning
Calgary, AB
- Full-time
The Product & Service Sales Manager – Power & Energy is a senior customer-facing leadership role responsible for driving profitable growth across power generation equipment, energy…
Added 24 mins ago
E
Scientist II
Evonik
Burnaby, BC
- Full-time
…release and stability testing, all the way through to sterile product manufacturing under GMP for Phase I-II clinical trials. Products include the LIPEX® line of Extruders, which are…
Added 24 mins ago
AI
Technical Product Manager - Platforms & Integrations
Accurant International
Remote, Canada
- $120,000 to $140,000 CAD / year
- Full-time
- Remote
Independently lead assigned product initiatives from discovery through launch, driving decisions, stakeholder alignment, and product acceptance.
Added 24 mins ago
R
Technical Manager, Quality Process Management - APQR - ** 12 Month Contract Position**
Roche
Mississauga, ON · Canada Pharma Campus
- Full-time
The Technical Manager, Quality Process Management - APQR, supports and executes the APQR process per Annual Product Quality Review (APQR) Requirements and Annual Product Quality Review…
Added 24 mins ago
Director, Life Underwriting
The Canada Life Assurance Company
Canada
…- New Business & Underwriting, Client Service, Technology, Product, Pricing, Reinsurance, Claims, Legal, Compliance, Distribution and Management Information to improve underwriter, advisor…
Added 24 mins ago
CI
Student Intern, Buying and Planning Data Analytics
Celestica International LP
Toronto, ON
- $23 to $30 CAD / hour
Working with suppliers to negotiate VMI and Replenishment Lead Time improvement programs
Added 24 mins ago
Inside Sales Representative
Berlin Packaging Canada Corporation
Dorval, QC
Interact extensively with customers to clarify their needs, recommend products and/or services, source product and provide pricing.
Added 24 mins ago
Senior Technology Consultant
TELUS
Montreal, QC · Quebec, QC · Rimouski, QC
…technology as it arrives. As a Senior Technology Consultant, you'll lead projects from first conversation to go-live, with the autonomy to shape solutions and the chance to grow alongside…
Added 24 mins ago
Principal Product Designer
Momentum Financial Services Group
Toronto, ON
Partner with product designers, engineering, QA, compliance, and the UX Lead to identify and resolve material accessibility or customer-risk issues.

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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