Toronto, On Principal scientist Jobs – 54 Openings This Week

Principal Data Scientist-Gen AI, Machine Learning (10042)
Extreme Networks —Toronto, ON
- Full-time
- Hybrid work
- Azure
- Doctoral degree
- Computer Science
Quick apply
AIML Delivery Lead
Cognizant —Toronto, ON
- $90,000–$135,000 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- CAD
- Designated paid holidays
- Disability insurance
Principal Software Engineer - Data
ZoomInfo Technologies LLC —Toronto, ON
- $163,800–$257,400 a year
- Remote
- Computer Science
- Engineering
- Java
Principal Electrical Engineer - Global Energy Services
Rimkus —Toronto, ON
- Full-time
- Remote
- Engineering
- Analysis skills
- Project management
- Disability insurance
- Dental care
Quick apply
Staff Engineer — Agentic AI
Royal Bank of Canada —Toronto, ON
- Full-time
- Azure
- DevOps
- Databases
Staff Engineer - Agentic AI
Royal Bank of Canada —Toronto, ON
- Full-time
- Azure
- DevOps
- Databases
Martech Solutions Architect - AEP
VML —Toronto, ON
- Hybrid work
- SQL
- JavaScript
- Marketing
Quick apply
Senior Electrical Engineer / Project Manager
exp —Markham, ON
- $90,000–$135,000 a year
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- AutoCAD
Staff/Lead Python Engineer (FastAPI, Orchestration)
Mimica —Toronto, ON
- Full-time
- Remote
- English
- Software development
- Python
- Paid time off
- Flexible schedule
Research Scientist/Principal Research Scientist
WELL Health Technologies Corp —Toronto, ON
- $80,000–$100,000 a year
- Full-time
- Doctoral degree
- Master's degree
- Bachelor's
Quick apply
13d
Research Assistant (SRI) - Evaluative Clinical Sciences - Casual 2026-18011
Sunnybrook Health Sciences Centre —Toronto, ON
- Databases
- Bachelor's
- Organizational skills
Quick apply
13d
Senior Experience Strategist
VML —Toronto, ON
- $65,000–$115,000 a year
- Hybrid work
- Salesforce
- Presentation skills
- Communication skills
Quick apply
9d
Principal Data Science
BHP —Toronto, ON
- Full-time
- Hybrid work
- Computer science
- Azure
- Oracle
- Relocation assistance
- Work from home
3d
Associate Purchasing Manager (Food Manufacturing)
Newly Weds Foods Co. —Mississauga, ON
- From $115,000 a year
- Full-time
- Master's degree
- Bachelor's
- Computer skills
- Wellness program
- Disability insurance
Quick apply
Lab Coordinator (sample custodian) & Archivist
Cliantha Research Ltd. —Scarborough, ON
- $40,000–$45,000 a year
- Full-time
- Laboratory experience
- Analysis skills
- Bachelor's
- Dental care
- Paid time off
Quick apply
10d
Senior Actuarial Manager
Aviva —Toronto, ON
- $150,000–$170,000 a year
- Hybrid work
- Leadership
- Communication skills
12d

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Senior Electrical Engineer / Project Manager
exp —Markham, ON
Leads the design team to produce schematic design, design development, tender and construction documents that meet the project requirements within the allocated…
$90,000–$135,000 a year
Research Assistant (SRI) - Evaluative Clinical Sciences - Casual 2026-18011
Sunnybrook Health Sciences Centre —Toronto, ON
Bachelor’s degree in Health Sciences or related discipline. Minimum 1 year of relevant work experience. Abstracting data from SunnyCare (EPR) related to head…
Quick apply
13d

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principal scientist jobs near toronto, on

Principal Data Scientist-Gen AI, Machine Learning (10042)

Extreme Networks -
Toronto, ON

Quick apply

Job details

Full-time

Qualifications

Azure
Data mining
Law
Doctoral degree
Computer Science
Big data
Spark
Mathematics
Google Cloud Platform
Master's degree
AWS
Machine learning
Kafka
AI
Graph databases

Full job description

Principal Data Scientist – (Gen AI, Machine Learning):

Are you energized by the idea of innovating with Generative AI? Do you want to create global impact while tackling challenges at the forefront of Artificial Intelligence? Do you dream of building ground-breaking products that define the future of AI-driven network management? Then come, advance with us at Extreme.

This is a greenfield opportunity to shape next-gen networking experiences at the cutting edge of Generative AI, Machine Learning, Big Data, and Cloud Computing. You will help define every aspect of the user journey, product vision, and technical roadmap, and you will drive innovation from concept to delivery.

There has never been a better time to join Extreme. With multiple acquisitions expanding our portfolio and market strategy, we are experiencing unprecedented growth worldwide. Recognized as a Technology Leader in the Gartner Magic Quadrant and a multi-year Best Employer award winner, Extreme is committed to a culture of diversity, inclusion, and equality, where every employee thrives because of their differences, not despite them.

Our AI Core group is pioneering platforms and solutions for Generative AI, including AI Agents, RAG, Knowledge Bases, Data Mining, Anomaly Detection, and LLM fine-tuning. These innovations power flagship Extreme products while enabling entirely new offerings. Together, we are driving a fundamental shift in how businesses manage networks by building intelligent, high-performance multi-agent systems that perceive, learn, and act in real time.

At Extreme, innovation is not just encouraged, it is expected. Advance with us and help shape the future of network intelligence.

Job Responsibilities

Define and drive the long-term data science and ML strategy, influencing both product direction and organizational priorities
Lead high-impact research initiatives in ML, GenAI, and Graph ML, push the boundaries of applied science, and establish best practices for scalable adoption
Partner with engineering and product leadership to align data science innovation with business goals, shaping platform and infrastructure investments
Mentor and guide staff- and senior-level scientists, set technical direction, and foster a culture of excellence and innovation
Represent the organization externally through publications, talks, and collaborations, strengthening the company’s thought leadership in AI and ML

Requirements:

Degree in Computer Science, Mathematics, or a related field
8+ years of experience in applied ML research and production deployment
3+ years of hands-on experience building Generative AI solutions such as RAG, AI Agents, or LLM fine-tuning in production
Experience with Graph ML and Graph technologies such as GNNs or GraphRAG in production
Proven track record of end-to-end ownership including design, experimentation, validation, deployment, and scaling of ML systems
Experience deploying solutions on cloud platforms such as AWS, Azure, or GCP
Demonstrated ability to solve highly complex, ambiguous, cross-domain problems with measurable business impact

Preferred Qualifications

MS or PhD in Computer Science, Machine Learning, or a related discipline
Experience with distributed Big Data and ML platforms such as Spark, Flink, Kafka, PySpark, or Lakehouse
Recognized track record in the ML and AI community through publications, patents, open-source contributions, or conference talks
Strong ability to influence at the organizational level by driving strategy and fostering cross-functional alignment

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Quick apply

Refine Your Search

principal scientist jobs in toronto, on

Principal Data Scientist-Gen AI, Machine Learning (10042)

AIML Delivery Lead

Principal Software Engineer - Data

Principal Electrical Engineer - Global Energy Services

Staff Engineer — Agentic AI

Staff Engineer - Agentic AI

Martech Solutions Architect - AEP

Senior Electrical Engineer / Project Manager

Staff/Lead Python Engineer (FastAPI, Orchestration)

Research Scientist/Principal Research Scientist

Research Assistant (SRI) - Evaluative Clinical Sciences - Casual 2026-18011

Senior Experience Strategist

Principal Data Science

Associate Purchasing Manager (Food Manufacturing)

Lab Coordinator (sample custodian) & Archivist

Senior Actuarial Manager

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