Waterloo On Senior data scientist Jobs – 19 Openings This Week

Senior Research Scientist - AI Trainer
DataAnnotation —Cambridge, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Doctoral degree
- Computer Science
- Writing skills
- Flexible schedule
Quick apply
Senior Data Scientist
Palitronica —Waterloo, ON
- $125,000–$165,000 a year
- Mentoring
- Python
Senior Business Data Scientist, Marketing
Jobber —Kitchener-Waterloo, ON
- $151,200–$204,500 a year
- Full-time
- Hybrid work
- Salesforce
- SQL
- Analysis skills
Senior Data Scientist
Co-operators General Insurance Company —Guelph, ON
- $83,774–$133,700 a year
- Hybrid work
- Computer Science
- Engineering
- English
- Disability insurance
- Dental care
Quick apply
5d
Senior Data Analyst
CarePartners —Waterloo, ON
- $80,000–$95,000 a year
- Full-time
- Computer Science
- SQL
- Analysis skills
- Dental care
- Employee assistance program
Senior Staff Data Engineer - Platform Data and Analytics
Faire —Cambridge, ON
- $232,000–$319,000 a year
- Remote
- Computer Science
- Engineering
- SQL
- Employee assistance program
Senior Data Analyst (6 Month Contract)
KEV Group —Kitchener, ON
- $110,000–$130,000 a year
- Contract
- Hybrid work
- SQL
- Analysis skills
- Paid time off
Quick apply
9d
Senior Customer Analytics Manager (Sales & Partnerships)
Jobber —Kitchener-Waterloo, ON
- $151,200–$204,500 a year
- Full-time
- Hybrid work
- Salesforce
- SQL
- Analysis skills
Senior Product Manager - AI
Varicent —Waterloo, ON
- $121,200–$159,000 a year
- Remote
- Computer Science
- Engineering
- Bachelor's
Quick apply
Senior Software Developer, Machine Learning, Applied AI
Google —Waterloo, ON
- $174,000–$252,000 a year
- Full-time
- Doctoral degree
- Computer Science
- Master's degree
Sr. Director, Product Management, AI Product Strategy
OpenText —Waterloo, ON
- Full-time
- Machine learning
- Team management
- Mentoring
- Paid time off
Sr. Manager, Technical Architect – Enterprise AI Solutions
Canadian Solar Inc. —Kitchener, ON
- Full-time
- Azure
- Computer Science
- Salesforce
- Dental care
- Paid time off
Quick apply
Senior AI Data Scientist
Biocode Ai —Canada
- Full-time
- Hybrid work
- Master's degree
- SQL
- Bachelor's
- Dental care
- Tuition reimbursement
Quick apply

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26-088 Senior SAP Financial Data Analyst - 24 month Contract - Oshawa Hybrid
CorGTA —Pickering, ON
Experience developing business-facing dashboards, reports, and data visualizations using Power BI and/or Tableau, with the ability to clearly communicate…
$90–$100 an hour
4d
Senior Data Scientist Implementation and Codification
National Bank of Canada —Richmond Hill, ON
We offer a wide range of ongoing learning opportunities for your development, including coaching, hands-on learning, training courses and through the…
12d

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Senior Research Scientist - AI Trainer

DataAnnotation -
Cambridge, ON

Quick apply

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 Senior Research 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

senior data scientist jobs in waterloo on

Senior Research Scientist - AI Trainer

Senior Data Scientist

Senior Business Data Scientist, Marketing

Senior Data Scientist

Senior Data Analyst

Senior Staff Data Engineer - Platform Data and Analytics

Senior Data Analyst (6 Month Contract)

Senior Customer Analytics Manager (Sales & Partnerships)

Senior Product Manager - AI

Senior Software Developer, Machine Learning, Applied AI

Sr. Director, Product Management, AI Product Strategy

Sr. Manager, Technical Architect – Enterprise AI Solutions

Senior AI Data Scientist

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