Ontario Data scientist Jobs – 802 Openings This Week

Clinical Data Scientist - AI Trainer
DataAnnotation —Kincardine, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Bilingual
- Doctoral degree
- Computer Science
- Flexible schedule
Quick apply
5d
Computational Neuroscientist - AI Trainer
DataAnnotation —Brampton, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Bilingual
- Doctoral degree
- Computer Science
- Flexible schedule
Quick apply
5d
Data Scientist Developer
MSi Corp (Bell Canada) —Mississauga, ON
- $40–$50 an hour
- Full-time
- Hybrid work
- Databases
- SQL
- Machine learning
Quick apply
Junior Data Scientist
Cushman & Wakefield —Toronto, ON
- $114,750–$135,000 a year
- Full-time
- Azure
- Doctoral degree
- BLS Certification
- Disability insurance
- Dental care
Quick apply
Data Scientist
Ministry of Transportation —St. Catharines, ON
- $86,379–$127,288 a year
- Bilingual
- English
- Research
5d
Data Scientist II
Intact —Ajax, ON
- $94,200–$115,200 a year
- Full-time
- Hybrid work
- No experience needed
- Machine learning
- Continuous improvement
- Employee stock purchase plan
Data Scientist
FutureFit AI —Toronto, ON
- $100,000–$155,000 a year
- Full-time
- Remote
- SQL
- AWS
- Travel
Data Scientist II
Scribd, Inc. —Ottawa, ON
- $118,000–$150,000 a year
- Full-time
- Computer Science
- Master's degree
- SQL
- Disability insurance
- Dental care
8d
Data Science Instructor
Metro College —Toronto, ON
- $45–$75 an hour
- Part-time
- Microsoft Excel
- Doctoral degree
- Data analysis skills
Data Scientist
Ontario Teachers' Pension Plan —Toronto, ON
- $105,000–$155,000 a year
- Full-time
- Computer science
- Doctoral degree
- Master's degree
Data Scientist
Ample Insight Inc. —Toronto, ON
- Full-time
- Remote
- Computer science
- Doctoral degree
- Computer Science
Quick apply
Data Scientist
illumin —Toronto, ON
- $120,000–$140,000 a year
- Full-time
- Hybrid work
- Microsoft Excel
- Computer Science
- SQL
- Disability insurance
- Dental care
Quick apply
Data Scientist
Aviva —Markham, ON
- $80,000–$120,000 a year
- Hybrid work
- Computer Science
- Master's degree
- SQL
10d
Data Scientist, Data Intelligence
World Vision Canada —Mississauga, ON
- $78,400–$98,000 a year
- Full-time
- Azure
- Doctoral degree
- Computer Science
Quick apply
11d
Data Scientist
Coca-Cola Canada Bottling —Toronto, ON
- $82,800–$105,000 a year
- Hybrid work
- Azure
- Engineering
- Master's degree
- Employee assistance program
2d
FinTech Data Scientist
BESPOKE ORIGINAL DESIGN INCORPORATED —Toronto, ON
- $2,400 a week
- Part-time
- Hybrid work
- Java
- Databases
- SQL
Quick apply
Data Analyst
GitHub, Inc. —Ontario
- $83,900–$155,700 a year
- Remote
- Engineering
- Data analysis skills
- Finance
RQ00209 - Int. Data Analytical Specialist/Scientist
Source Code —Toronto, ON
- $49.28–$66.00 an hour
- Full-time
- Microsoft Excel
- Data analysis skills
- Microsoft Office
Quick apply
7d
Data Scientist - Machine Learning
Ample Insight Inc. —Toronto, ON
- Contract
- Remote
- Doctoral degree
- Computer Science
- Engineering
Quick apply
Data Scientist 2
Northbridge Financial Corporation —Toronto, ON
- $84,000–$126,000 a year
- Full-time
- Hybrid work
- Computer Science
- SQL
- Bachelor's
- Work from home

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Clinical Data Scientist - AI Trainer

DataAnnotation -
Kincardine, ON

Quick apply

Job details

Contract | Fixed term contract
$50.00–$140.56 an hour
5 days ago

Qualifications

Bilingual
Statistics
Doctoral degree
Computer Science
Writing skills
Engineering
Mathematics
English
Google Cloud Platform
Master's degree
AWS
Bachelor's

Full job description

DataAnnotation is committed to creating quality AI. Help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule.

We are looking for an existing Clinical Data Scientist - AI Trainer to help train AI models. AI models are increasingly capable of performing complex analytical and scientific reasoning — but these systems still need practitioners with real-world quantitative experience to validate whether the outputs actually hold up in practice. That's where you come in.

You'll work closely with state-of-the-art AI models on tasks like evaluating AI-generated quantitative analysis, solving technical problems, and providing feedback that directly shapes how these systems reason about data, models, and scientific problems. Whether your background is in data science, astrophysics, economics, biostatistics, operations research, or any other quantitative field, if you think rigorously about data and models, your skills are directly applicable here. You can fit this work alongside a full-time role, or treat it as your primary focus, choosing projects and schedules that align with your availability and goals.

To get started, once you sign up for an account, you'll take a short assessment (this serves as our version of an interview). If you pass, you'll receive an email confirmation, and paid work will become available on our platform.

Advantages of contracting with us:

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose which projects you take on and when you work, on your own computer, from the comfort of your own home.
Competitive pay: projects are paid hourly at $50 to $100 USD per hour, with bonus rates available on some projects.
Impact: help shape the future of AI systems built to reason about data and analytics.

Responsibilities:

Evaluate AI-generated quantitative work, including statistical analysis, predictive modeling, scientific reasoning, and data-driven insights, for technical accuracy and real-world validity.
Design and solve quantitative problems used to train and benchmark AI systems, spanning areas like forecasting, experimental analysis, optimization, and statistical inference.
Write clear technical explanations and well-documented analytical code.
Provide feedback that directly shapes the next generation of AI models built for quantitative reasoning.

Qualifications:

3+ years of hands-on experience in a quantitative role or research environment — such as data science, statistics, economics, finance, physics, biology, epidemiology, operations research, or any adjacent field.
Some coding experience required, with comfort writing and reviewing analytical code end-to-end.
Practical experience with statistical methods, predictive modeling, and experiment design (e.g., A/B testing, hypothesis testing, regression, classification, time-series forecasting).
Fluency in English (native or bilingual level) with strong writing skills.
A bachelor's degree in a quantitative field preferred (Statistics, Computer Science, Mathematics, Engineering, or similar); an advanced degree (Master’s or PhD) is a plus.
Relevant credentials are a plus (e.g., Kaggle Competition ranking, AWS/GCP ML certifications, or equivalent demonstrated expertise).

Note: Payment is made via PayPal. We will never ask for any money from you. This job is only available to those in the US, Canada, UK, Ireland, Australia, and New Zealand.

Quick apply

Refine Your Search

data scientist jobs in ontario

Clinical Data Scientist - AI Trainer

Computational Neuroscientist - AI Trainer

Data Scientist Developer

Junior Data Scientist

Data Scientist

Data Scientist II

Data Scientist

Data Scientist II

Data Science Instructor

Data Scientist

Data Scientist

Data Scientist

Data Scientist

Data Scientist, Data Intelligence

Data Scientist

FinTech Data Scientist

Data Analyst

RQ00209 - Int. Data Analytical Specialist/Scientist

Data Scientist - Machine Learning

Data Scientist 2

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