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Added 1 min ago
S
Business Development Manager
Sysco
Victoria, BC · Sysco Victoria
- Full-time
…comprehensive solutions for prospects. The Senior Analyst builds strong customer relationships and manages the onboarding process, transitioning new accounts to the sales…
Added 1 min ago
BE
Director, Project Management
Blackstone Energy
Toronto, ON
- Full-time
Lead the successful delivery of assigned distributed generation, energy efficiency, electrification and carbon-reduction projects from development and detailed feasibility through…
Added 2 mins ago
MC
Clinic Manager - London
Medicentres Canada Inc.
London, ON
- $55,000 to $60,000 CAD / year
- Full-time
…the clinics. The Clinic manager is responsible to implement, lead and communicate new initiatives and programs to staff and physicians. Additionally, work collaboratively with physicians,…
Added 16 mins ago
CO
Senior Director, Strategic Accounts & Business Development
Crofter's Organic
Parry Sound, ON
- Full-time
Lead new customer pitches, new item presentations and listing negotiations from first meeting through to first order.
Added 16 mins ago
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Reimbursement & Logistics Manager
Pharmacy.ca
Toronto, ON · North York, ON
- $90,000 to $120,000 CAD / year
- Full-time
…successful candidate will oversee reimbursement operations, lead a multidisciplinary team, manage clinic and external partner relationships, and drive operational performance across…
Added 16 mins ago
FB
Assistant Service Manager
Farm Boy Inc.
Collingwood, ON
- $21.5 CAD / hour
- Full-time
Deliver outstanding customer service while supporting Farm Boy’s vision of the best fresh shopping experience.
Added 16 mins ago
BE
Director, Project Management
Blackstone Energy Services Inc.
Toronto, ON
- Full-time
Lead the successful delivery of assigned distributed generation, energy efficiency, electrification and carbon-reduction projects from development and detailed feasibility through…
Added 17 mins ago
P
Customer Success Representative
Prophix
Remote, Canada
- Remote
Learn each customer’s goals and use cases so you can tie the product to the outcomes they care about.
Added 31 mins ago
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(CAN) Pharmacy Manager
Walmart
Dryden, ON
- Full-time
…inventory management, disposal of expired products), addressing all customer complaints and resolve all customer problems to ensure excellent customer experience. Responsible for the…
Added 32 mins ago
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Assistant Store Manager - Smart Centers Cambridge
Reitmans (Canada) Ltée/Ltd
Cambridge, ON
- Full-time
…elevate store performance, strengthen the brand, and ensure every customer enjoys an exceptional…
Added 32 mins ago
GD
Senior Human Factors Engineering Analyst
General Dynamics Missions System International
Ottawa, ON
- $110,000 to $138,000 CAD / year
- Full-time
Lead HFE activities across assigned programs, defining objectives, methods, deliverables, schedules, and measures of success.
Added 32 mins ago
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Universal Fraud Agent, Remote - Bilingual
CIBC
Montreal, QC
- Full-time
…internal customers consistent with CIBC’s vision of winning customer loyalty through service excellence. You will identify, analyze and conduct investigations of client transactions through…
Added 32 mins ago
LC
Gérant des viandes - Québec
Loblaw Companies Limited
L'Ancienne-Lorette, QC
- Full-time
Train and develop department associates in customer service, product knowledge, and merchandising
Added 32 mins ago
LC
Meat Department Manager Full Time Day
Loblaw Companies Limited
Vancouver, BC
- Full-time
…Manager in, you will have an immediate impact on sales and customer…
Added 47 mins ago
MO
Manager of Recreation & Community Operations
Municipality of Grey Highlands
Markdale, ON
- $102,394.5 to $119,769 CAD / year
- Full-time
…provides leadership and support to the Parks & Recreation Team Lead, Community Relations Coordinator, and departmental staff while ensuring efficient service delivery, strong customer…
Added 47 mins ago
GD
Senior Human Factors Engineering Analyst
General Dynamics Mission Systems–Canada
Ottawa, ON
- $110,000 to $138,000 CAD / year
- Full-time
Lead HFE activities across assigned programs, defining objectives, methods, deliverables, schedules, and measures of success.
Added 47 mins ago
P
Customer Success Representative
Prophix
Toronto, ON · Etobicoke, ON
- Full-time
Learn each customer's goals and use cases so you can tie the product to the outcomes they care about
Added 47 mins ago
I
Product Development Team Lead
Inertia
Toronto, ON
- Full-time
…concept to manufacturing launch with clarity, confidence, and…
Added 47 mins ago
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Prep_Assistant Cook
Chartwell
Surrey, BC
- Full-time
A passion for providing exceptional customer experience
Added 1 hour ago
FC
Courier Team Lead
FedEx Canada
Comox, BC
- Full-time
Demonstrated excellent interpersonal, customer relations and communication skills.
Added 1 hour ago
N
Business Solutions Advisor
Nulogy
Remote, Canada
- Full-time
- Remote
We lead with genuine care, build strong relationships, and create space for people to grow.
Added 1 hour ago
SH
Registered Nurse - Clinical Resource Team
Southlake Health Community
Newmarket, ON · Southlake Health
- Part-time
…collaboratively as a valued member of the interdisciplinary health care team, providing safe, high-quality patient care guided by the CNO's Scope of Practice, Practice…
Added 1 hour ago
Project Manager, Customer Success & Account Management
GoBolt
Toronto, ON
We are looking for a Project Manager to support our Account Management and Customer Success division. In this role you will own the planning and execution of merchant projects, from new…
Added 1 hour ago
Regional Manager, Workplace - Americas
Infoblox
Burnaby, BC
…Workplace Operations and Events. In this pivotal role, you will lead workplace strategy and operational excellence across the Americas, including the United States, Canada, and Latin…
Added 1 hour ago
TC
Restaurant Leadership | Management
The Canadian Brewhouse
London, ON
- Full-time
…strengthen the Canadian Brewhouse’s reputation with quality customer service skills, innovative brain-power, and a can-do…

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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