Ontario Principal Jobs – 1862 Openings This Week

Principal Data Scientist - AI Trainer
DataAnnotation —Windsor, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Doctoral degree
- Computer Science
- Writing skills
- Flexible schedule
Quick apply
Estimator
Earthline Foundations and Shoring Ltd —Mississauga, ON
- $80,000–$120,000 a year
- Full-time
- Engineering
- English
- Organizational skills
Quick apply
12d
Senior Assurance Manager
RLB LLP —Guelph, ON
- Full-time
- Hybrid work
- Management
- Microsoft Office
- Accounting
Quick apply
Commercial Lines Account Manager
McDougall Insurance and Financial —Markham, ON
- $60,000–$70,000 a year
- Full-time
- Sales
- Customer service
- Word processing
- Dental care
- Paid time off
Quick apply
Nurse Practitioner - Rapid Access Addiction Medicine, Moosonee, ON
Weeneebayko Area Health Authority —Ontario
- $81.84–$85.07 an hour
- Full-time
- Nursing
- BLS Certification
- Travel
- Dental care
- Employee assistance program
Quick apply
Dental Receptionist/Front Desk Administrator
Riverside Dental Centre Trenton —Trenton, ON
- $24–$26 an hour
- Full-time
- High school diploma or GED
- Organizational skills
- EMR systems
- Dental care
Quick apply
13d
Senior Family Law Lawyer/ Department Lead
Confidential —Mississauga, ON
- From $120,000 a year
- Full-time
- Business development
- Analysis skills
- Bachelor's
- Profit sharing
- Dental care
Quick apply
3d
After Hours Academic Support Program Teaching Positions
Simcoe County District School Board —Midhurst, ON
- Math
- Teaching
Senior Account Manager - Commercial Lines Insurance
McDougall Insurance and Financial —North Bay, ON
- $55,000–$85,000 a year
- Full-time
- In-person
- Communication skills
- Disability insurance
- Dental care
Quick apply
Executive Director
Brock University Students Union —St. Catharines, ON
- $130,000–$150,000 a year
- Full-time
- Finance
- Master's degree
- Bachelor's
- Dental care
Quick apply
9d
Senior Assurance Manager
RLB LLP —Orangeville, ON
- Full-time
- Hybrid work
- Management
- Microsoft Office
- Accounting
Quick apply
Principal UX/UI Designer
Brain Box —Toronto, ON
- $90,000–$110,000 a year
- Full-time
- Hybrid work
- Mentoring
- Agile
- In-person
- Wellness program
- Commuter benefits
Quick apply
11d
Principal Biostatistician
Everest Clinical Research —Markham, ON
- $150,000–$200,000 a year
- Doctoral degree
- Master's degree
- Continuous improvement
- Disability insurance
- Dental care
Quick apply
2d
Program Performance Manager
Variablegrid Adaptive Power Inc. —Ontario
- $90,000–$130,000 a year
- Full-time
- CRM software
- Microsoft Outlook
- English
- Paid time off
Quick apply
2d
Account Manager- Personal Lines Insurance
McDougall Insurance and Financial —Prescott, ON
- $48,000–$55,000 a year
- Full-time
- In-person
- Communication skills
- Disability insurance
- Dental care
Quick apply
Part time Core-French Teacher; Full time Mixed Grade Teacher
Community Life Christian School —Toronto, ON
- Full-time
- Master's degree
- Experience working with children
- Bachelor's
Quick apply
Assurance Manager
RLB LLP —Orangeville, ON
- Overtime
- Hybrid work
- Microsoft Office
- Team management
- Accounting
Quick apply
Personal Lines Account Manager
McDougall Insurance and Financial —Richmond Hill, ON
- $50,000–$65,000 a year
- Full-time
- Customer service
- Word processing
- Data analysis skills
- Paid time off
Quick apply
Principal Project Planner - Transportation
Noramtec Consultants Americas —Toronto, ON
- $112,000–$168,000 a year
- Full-time
- Hybrid work
- Engineering
- Team management
- Contracts
- Paid time off
- Work from home
Quick apply
Project Advisor - NORC Community Connector
Reconnect Health Services —Greater Toronto Area, ON
- $53,000 a year
- Temporary
- Microsoft Word
- Microsoft Outlook
- Computer literacy
- Paid time off
Quick apply

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Principal Data Scientist - AI Trainer

DataAnnotation -
Windsor, ON

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Job details

Contract | Fixed term contract
$50.00–$140.56 an hour

Qualifications

Statistics
Predictive analysis
Statistics
Doctoral degree
Computer Science
Predictive modeling analysis
Writing skills
Engineering
Mathematics
English
Master's degree
Bachelor's
Quantitative modelling analysis
A/B testing
Data science
AI
Performing statistical data analysis

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 Principal 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

principal jobs in ontario

Principal Data Scientist - AI Trainer

Estimator

Senior Assurance Manager

Commercial Lines Account Manager

Nurse Practitioner - Rapid Access Addiction Medicine, Moosonee, ON

Dental Receptionist/Front Desk Administrator

Senior Family Law Lawyer/ Department Lead

After Hours Academic Support Program Teaching Positions

Senior Account Manager - Commercial Lines Insurance

Executive Director

Senior Assurance Manager

Principal UX/UI Designer

Principal Biostatistician

Program Performance Manager

Account Manager- Personal Lines Insurance

Part time Core-French Teacher; Full time Mixed Grade Teacher

Assurance Manager

Personal Lines Account Manager

Principal Project Planner - Transportation

Project Advisor - NORC Community Connector

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