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Added 13 mins ago
LA
Building Mechanical Maintenance Technician
Legislative Assembly of British Columbia
Victoria, BC
- Full-time
Career development – We support continuing education by providing innovative, inclusive and diverse learning opportunities for growth, skill development and career advancement.
Added 13 mins ago
I
Policy Analyst - Trade and Sustainable Development
IISD
Winnipeg, MB
- Full-time
The International Institute for Sustainable Development (IISD) is a globally recognized think tank with more than 30 years of experience working to solve today's greatest sustainable…
Added 13 mins ago
S
Business Development Manager
Sysco
Victoria, BC · Sysco Victoria
- Full-time
Drive New Business Acquisition: Lead new business acquisition efforts, leveraging cross-functional teams to address prospect concerns, build trust, and shorten sales cycles. Collaborate…
Added 13 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 14 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 28 mins ago
LC
Community & Communications Coordinator
Lincoln Chamber of Commerce
Beamsville, ON
- Part-time
…an incredible network of business owners, community leaders, and stakeholders at all levels. This position is ideal for someone who sees this not just as a job, but as a launchpad into a…
Added 28 mins ago
SI
Senior Product Manager
Spruce InfoTech Inc.
Toronto, ON
- Contract
Strong working knowledge of Azure Machine Learning, Microsoft Foundry/Azure AI Foundry, LLMs, RAG, machine learning, analytics, and enterprise data platforms, including an understanding of…
Added 28 mins ago
FB
Assistant Service Manager
Farm Boy Inc.
Collingwood, ON
- $21.5 CAD / hour
- Full-time
Support team development through training, coaching, motivation, and recognition while maintaining a high level of trust, confidentiality, and professionalism.
Added 28 mins ago
NB
Digital Payments and Tokenized Assets Leader
National Bank of Canada
Montreal, QC
- Full-time
The Bank values continuous development and internal mobility. Our personalized training programs, based on learning through action, allow you to master your role and develop new areas of…
Added 28 mins ago
GM
[Disney Dreamlight Valley PC/Console] Analyste de données sénior - Senior Data Analyst
Gameloft Montreal
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 29 mins ago
GL
Frontend Engineering Lead
Geomagical Labs
Remote, Canada
- Full-time
- Remote
● Lead the technical design and development of the IKEA Kreativ web experience, delivering high-quality, customer-focused features used by millions of IKEA customers.
Added 29 mins ago
T
Performance Engineering Lead
TD
Mississauga, ON · Toronto, ON
- Full-time
TD is committed to providing fair and equitable compensation opportunities to all colleagues. Growth opportunities and skill development are defining features of the colleague experience at…
Added 29 mins ago
Construction Manager (Jansen Stage 2)
BHP
Canada
Lead the development and implementation of the Owner’s assurance program for construction execution and act as the Owner’s primary representative for site ePCM execution strategy.
Added 44 mins ago
PH
Coding Application Specialist, Coding Services
Providence Healthcare
Surrey, BC
- Other
Education, Training, and Experience:Graduation from an accredited Health Information Management Diploma or Bachelor Program. Four (4) years’ recent, related experience as a Health Record…
Added 44 mins ago
YO
Level 3 Early Childhood Educator Hourly FSCD
YMCA of Northern Alberta
Edmonton, AB
- Part-time
Observing and documenting children’s development and behavior to support individualized learning.
Added 44 mins ago
YO
Level 2 Early Childhood Educator Hourly
YMCA of Northern Alberta
Edmonton, AB
- Part-time
Observing and documenting children’s development and behavior to support individualized learning.
Added 44 mins ago
YO
Level 2 Early Childhood Educator Hourly
YMCA of Northern Alberta
Edmonton, AB
- Part-time
Observing and documenting children’s development and behavior to support individualized learning.
Added 44 mins ago
RB
Manager, AML Model Testing
Royal Bank of Canada
Toronto, ON
- Full-time
…AML Model Testing Manager will support the ongoing AML model development testing process to ensure the accuracy and reliability of model code through comprehensive testing. This role will…
Added 44 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 44 mins ago
CT
Team Lead, Space Planning
Canadian Tire Corporation
Toronto, ON · Retail City
- Full-time
Lead Space Planning projects and contribute to the development of prototypical floorplans, store concepts, and new merchandising programs.
Added 59 mins ago
DG
HR Business Partner
DHL Global Forwarding
Montreal, QC
- Full-time
Partner across Talent Acquisition, Learning and Development, Total Rewards, Payroll, HR Operations and other functions to deliver integrated solutions and a consistent employee experience.
Added 59 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 59 mins ago
CT
Team Lead, Space Planning
Canadian Tire Corporation
Toronto, ON
- Full-time
Lead Space Planning projects and contribute to the development of prototypical floorplans, store concepts, and new merchandising programs.
Added 59 mins ago
E
Project Manager
EllisDon
ON · Ontario Projects
- Full-time
Lead meetings, contribute to business development opportunities, and provide timely reporting to leadership
Added 59 mins ago
E
Assistant Project Manager
EllisDon
AB · Alberta Projects
- Full-time
Lead project meetings with internal and external parties to monitor and support the team’s ongoing development and progression

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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