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Added 7 mins ago
PS
Internal Audit Manager
Professional Staffing
Toronto, ON · Greater Toronto Area, Canada
- $110,000 to $120,000 CAD / year
- Full-time
Highly organized, self-motivated, and results-oriented, with a focus on efficiency, process improvement, and practical, sustainable solutions.
Added 7 mins ago
HI
Information Security Specialist
Healthcare Insurance Reciprocal of Canada (HIROC)
Toronto, ON
- Contract
…Reciprocal. Combined with sage counsel and risk management solutions, HIROC works with its partners to increase…
Added 7 mins ago
SW
Territory Retail Sales Manager
Steam Whistle Brewing
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Ability to generate account based merchandising solutions
Added 7 mins ago
SI
Senior Product Manager
Spruce InfoTech Inc.
Toronto, ON
- Contract
…translating complex business requirements into scalable AI solutions that deliver measurable…
Added 7 mins ago
EB
Senior Analyst, Commercial QA (12 month contract)
EQ Bank
Toronto, ON
- Contract
…services from banking and lending, to trust and credit union…
Added 7 mins ago
EB
Analyst, Credit Risk Management
EQ Bank
Toronto, ON
- Full-time
…services from banking and lending, to trust and credit union…
Added 7 mins ago
IG
Global Head of Digital Strategy & Transformation
Ingenio Global
Toronto, ON · Greater Toronto Area, Canada
- $220,000 to $250,000 CAD / year
- Full-time
…commercial and operational challenges into practical technology solutions that improve efficiency, client experience and service…
Added 7 mins ago
BE
Director, Project Management
Blackstone Energy Services Inc.
Toronto, ON
- Full-time
…built on developing responsible energy and carbon management solutions. This includes budgeting, energy procurement, cost improvement strategies, utility bill management, climate risk…
Added 7 mins ago
SG
Power Electronics Design Engineer
Socomec Group
Brampton, ON
- Full-time
…simulation-based analysis, identifying root causes and proposing effective solutions to address identified…
Added 7 mins ago
SG
Electrical Engineer
Socomec Group
Brampton, ON
- Full-time
…and analytical techniques to identify and implement effective…
Added 7 mins ago
P
Senior L3 AI Engineer
PeoplePilot
Montreal, QC
- $120,000 to $140,000 CAD / year
- Full-time
The role will focus on resolving complex AI platform issues, configuring and deploying enterprise AI solutions, managing integrations and automation, and supporting new feature and model…
Added 7 mins ago
T&
Project Controls Officer
Turner & Townsend
Ottawa, ON
- Full-time
Our capabilities include programme, project, cost, asset and commercial management, controls and performance, procurement and supply chain, net zero and digital solutions.
Added 7 mins ago
GL
Frontend Engineering Lead
Geomagical Labs
Remote, Canada
- Full-time
- Remote
● Architect scalable frontend solutions using modern JavaScript, TypeScript, React, APIs, and cloud technologies.
Added 7 mins ago
Software Integration Engineer - Associate
iCapital
Toronto, ON
…role develops, tests and supports well-defined integration solutions that connect client and product systems. The work spans application, API, and database layers and follows established…
Added 22 mins ago
Senior Software Development Engineer in Test (SDET)
Adaptive Financial Consulting
Montreal, QC
…experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive…
Added 22 mins ago
M(
Senior Platform Engineer, Quality Platform
MaintainX (An Autodesk Company)
Remote, Canada
- $107,000 to $195,000 CAD / year
- Full-time
- Remote
In August 2026 MaintainX became part of Autodesk, joining Autodesk Operations Solutions, the organization unifying Autodesk's operations platform alongside Tandem, FlexSim and Fusion…
Added 22 mins ago
RA
Staff Software Engineer, Platform
Rivian and Volkswagen Group Technologies
Remote, Canada
- $137,300 to $181,890 CAD / year
- Full-time
- Remote
…operating systems to zonal controllers to cloud and connectivity solutions, we’re addressing the challenges of electric vehicles through technology that will set the standards for…
Added 22 mins ago
MI
Senior Fund Accountant, Real Assets (Yardi)
MUFG Investor Services
Toronto, ON
- $72,000 to $105,600 CAD / year
- Full-time
…and private funds, providing asset servicing and operational solutions built for alternatives. With over $1 trillion in client assets under administration, we offer fund administration,…
Added 22 mins ago
MI
Associate, Portfolio Operations
MUFG Investor Services
Halifax, NS
- Full-time
…and private funds, providing asset servicing and operational solutions built for alternatives. With over $1 trillion in client assets under administration, we offer fund administration,…
Added 22 mins ago
MI
Associate Director, Client Data Team
MUFG Investor Services
Halifax, NS
- Full-time
Work with guidance from director to assess solutions and assist in legacy replacement and modernization initiatives (For in-house systems: Origin and MTC)
Added 22 mins ago
MI
Associate, Fund Accounting
MUFG Investor Services
Halifax, NS
- Full-time
MUFG Investor Services provides asset servicing solutions to the global investment management industry. Leveraging the financial and intellectual capital of MUFG – one of the largest banks…
Added 22 mins ago
MI
Senior Associate, Business Intelligence & Reporting Developer
MUFG Investor Services
Toronto, ON
- $62,250 to $91,300 CAD / year
- Full-time
The Senior Associate, Business Intelligence & Reporting Developer is responsible for designing, developing, and maintaining enterprise reporting, dashboards, and analytical solutions that…
Added 22 mins ago
MI
Senior Associate, Portfolio Operations
MUFG Investor Services
Halifax, NS
- Full-time
MUFG Investor Services is a trusted partner to many of the world’s largest public and private funds, providing asset servicing and operational solutions built for alternatives.
Added 22 mins ago
MI
Associate, Investor Delivery
MUFG Investor Services
Halifax, NS
- Full-time
…and private funds, providing asset servicing and operational solutions built for alternatives. With over $1 trillion in client assets under administration, we offer fund administration,…
Added 22 mins ago
GD
Senior Human Factors Engineering Analyst
General Dynamics Missions System International
Ottawa, ON
- $110,000 to $138,000 CAD / year
- Full-time
…security. Our teams design and deliver advanced, mission-critical solutions that enhance national security, strengthen communities, and protect the people we…

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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