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Added 4 mins ago
CI
Senior Lease Analyst (6-Month Contract)
Colliers International
Mississauga, ON · Oakville, ON · Toronto, ON
- Full-time
The Senior Lease Administrator, Client Lead is responsible for managing Lease Administration functions and implementations, client and vendor relationships, and centralizing, establishing…
Added 4 mins ago
Account Manager, Higher Education
D2L
Canada
Every application we receive is personally reviewed by a member of our Talent Acquisition team - yes, a real person looks at your resume! While we use AI tools internally to streamline…
Added 4 mins ago
B
Senior Analyst, Vendor Governance
BMO
Toronto, ON · BMOPLACE
- Full-time
The Senior Analyst is part of the North American Retail Payments (NARP) Team, supporting governance activities for an assigned vendor. The Senior Analyst will work with, and support the…
Added 4 mins ago
Mechanical Production Team Lead
Eclipse Automation
Cambridge, ON
Job Title: Mechanical Production Project Lead (Afternoon Shift)
Added 4 mins ago
Platform Delivery Enablement Lead
OpenTable
Toronto, ON
The Platform Delivery Enablement Lead is a technical hybrid program leader who strengthens how Platform Delivery works across Infrastructure Engineering, Security, Enterprise Systems,…
Added 4 mins ago
AM
Shift Miller (Milling Supervisor)
Ardent Mills
Saskatoon, SK
- Full-time
Participate in and lead team through customer issue follow-up and corrective actions.
Added 4 mins ago
L
Electronics Engineer
Lumentum
Ottawa, ON · Canada - Ottawa (Bill Leathem)
- Full-time
At Lumentum, we’re building the tech behind the world’s fastest networks and most advanced systems. Our optical and photonic solutions power everything from AI and cloud computing to data…
Added 4 mins ago
JC
Customer Quality Project Manager
Johnson Controls
AB · SA - Edmonton Orion
- Full-time
Build your best future with the Johnson Controls team
Added 4 mins ago
AK
Financial Controller
Arctic Kingdom
Mississauga, ON
- Full-time
We are seeking a Financial Controller to join our team within our Mississauga location.
Added 4 mins ago
S
Sales Support Manager-Data Centre & Managed IT Services
SaskTel
SK · Saskatchewan, Canada
- Full-time
At SaskTel, we don't just think big – we innovate and lead the way! We enrich everyday life. We empower people, organizations and communities to reach their full potential. If you're…
Added 4 mins ago
S
Data & AI Solution Architect
SaskTel
SK · Saskatchewan, Canada
- Contract
At SaskTel, we don't just think big – we innovate and lead the way! We enrich everyday life. We empower people, organizations and communities to reach their full potential. If you're…
Added 4 mins ago
S
AI Data Architect
SaskTel
SK · Saskatchewan, Canada
- Contract
At SaskTel, we don't just think big – we innovate and lead the way! We enrich everyday life. We empower people, organizations and communities to reach their full potential. If you're…
Added 4 mins ago
S
Chief Information Officer
SaskTel
Regina, SK
- Full-time
…technology strategy, digital modernization, cybersecurity posture, data governance, and the delivery of reliable, secure, and efficient technology services. The CIO also serves as SaskTel’s…
Added 4 mins ago
CO
Director, AI, Data & Analytics
City of North Vancouver
North Vancouver, BC
- $156,156 to $181,632 CAD / year
- Full-time
…will directly shape how artificial intelligence, enterprise data, analytics, and Geographic Information Systems (GIS) transform municipal service delivery. The Director will develop and…
Added 4 mins ago
TI
BSA with RPA & Power Platform
Themesoft Inc.
Toronto, ON
- Contract
Provide leadership and mentoring to team members and serve as a subject matter expert for systems analysis and automation solutions.
Added 4 mins ago
TT
Manager, Customer Service & Operations
The Talent Company
Toronto, ON · Greater Toronto Area, Canada
- $100,000 to $110,000 CAD / year
- Full-time
Opportunity to lead an established team in a collaborative, customer-focused environment.
Added 4 mins ago
TI
BSA with RPA & Power Platform
Themesoft Inc.
Toronto, ON
- Contract
Provide leadership and mentoring to team members and serve as a subject matter expert for systems analysis and automation solutions.
Added 4 mins ago
BI
Analyste principal, Implantation Epicor / Senior Analyst, Epicor Implementation
Balcan Innovations Inc.
Montreal, QC · Greater Montreal Metropolitan Area
- Full-time
…Packaging, Plastixx FFS Technologies, NELMAR Security Packaging Systems, rFoil, and…
Added 19 mins ago
T
Program Manager, Carrier Operations & Governance
Twilio
Remote, Canada
- Full-time
- Remote
Implement Core Infrastructure: Lead end-to-end process improvements across carrier operations - understanding, synthesizing, and deploying cohesive policies, workflows, systems/tools, and…
Added 19 mins ago
B
Senior Manager, Physical Security
BGIS
Markham, ON
- Full-time
…BGIS Corporate Security and Business Continuity Management team, and will lead North American physical security initiatives, provide subject matter expertise on physical security matters…
Added 19 mins ago
Senior AI Platform Engineer
Scotiabank
Toronto, ON
The Senior AI Platform Software Engineer will lead the design, development, and operation of scalable software platforms that enable enterprise teams to build, deploy, monitor, and govern…
Added 34 mins ago
FV
Robotics Middleware Founder
Forum Ventures
Canada
- Full-time
The opportunity: Become the sensor fusion layer every robotics team consumes instead of builds. Own the data foundation, then expand into the constraint layer, the policy layer, and the…
Added 34 mins ago
HI
Information Security Specialist
Healthcare Insurance Reciprocal of Canada (HIROC)
Toronto, ON
- Contract
Collaborate with PEIS team to ensure the optimal function of key security applications and systems by working with HIROC’s Managed Security Service Provider(MSSP), including but not limited…
Added 34 mins ago
AK
Financial Controller
Arctic Kingdom
Mississauga, ON
- Full-time
We are seeking a Financial Controller to join our team within our Mississauga location.
Added 34 mins ago
P
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…

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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