Guelph, On Senior data scientist Jobs – 118 Openings This Week

Quantitative AI Evaluator - AI Trainer
DataAnnotation —Mississauga, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Bilingual
- Doctoral degree
- Computer Science
- Flexible schedule
Quick apply
10d
Machine Learning Engineer, Edge AI
onsemi —Waterloo, ON
- $120,000–$170,000 a year
- Full-time
- Research
- Machine learning
- Computer networking
Python Developer - NLP, ML, Gen AI - Assistant Vice President
Citi —Mississauga, ON
- $94,300–$141,500 a year
- Full-time
- Hybrid work
- AWS
- APIs
- Linux
AI Developer (Fixed term contract)
Purolator Inc —Mississauga, ON
- Contract
- Computer Science
- Engineering
- English
Quick apply
9d
AI ML Engineer
Tata Consultancy Services —Mississauga, ON
- Azure
- Computer Science
- Data analysis skills
Data and AI Engineering Associate (Co-op 8+ Months Preferred)
NERv Technology Inc. D.B.A. FluidAI Medical —Kitchener, ON
- $22–$25 an hour
- Full-time
- Databases
- SQL
- JavaScript
Quick apply
Lead AI/ML Engineer
Royal Bank of Canada —Mississauga, ON
- Full-time
- Azure
- DevOps
- Engineering
AI Solutions Specialist - Co-op Student
Rodan Energy Solutions Inc. —Mississauga, ON
- $26–$28 an hour
- Azure
- Computer Science
- Engineering
Quick apply
13d
Junior AI/Automation Developer (Local AI Systems)
Precision Record Pressing Inc —Oakville, ON
- $70,000–$80,000 a year
- Full-time
- Computer Science
- Engineering
- ERP systems
- Paid time off
- Employee assistance program
Quick apply
2d
Sr. Manager, Technical Architect – Enterprise AI Solutions
Canadian Solar Inc. —Kitchener, ON
- Full-time
- Azure
- Computer Science
- DevOps
- Dental care
- Paid time off
Quick apply

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Quantitative AI Evaluator - AI Trainer

DataAnnotation
Mississauga, ON

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Job details

Contract | Fixed term contract
10 days ago

Benefits

Flexible schedule

Skills

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 Quantitative AI Evaluator - 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.

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Refine Your Search

senior data scientist jobs in guelph, on

Quantitative AI Evaluator - AI Trainer

Machine Learning Engineer, Edge AI

Python Developer - NLP, ML, Gen AI - Assistant Vice President

AI Developer (Fixed term contract)

AI ML Engineer

Data and AI Engineering Associate (Co-op 8+ Months Preferred)

Lead AI/ML Engineer

AI Solutions Specialist - Co-op Student

Junior AI/Automation Developer (Local AI Systems)

Sr. Manager, Technical Architect – Enterprise AI Solutions

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