Thorold, On Project Jobs – 668 Openings This Week

Data Science Manager - AI Trainer
DataAnnotation —St. Catharines, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Doctoral degree
- Computer Science
- Writing skills
- Flexible schedule
Quick apply
Expert Carpenter
Tucker Homes —Niagara Peninsula, ON
- $34–$45 an hour
- Full-time
- Carpentry
- High school diploma or GED
- Team management
- Dental care
- Paid time off
Quick apply
TIG Welder/Fabricator
Full Circle Industrial Solutions —Niagara Falls, ON
- $25–$35 an hour
- Full-time
- Basic math
- Forklift
- Math
- Dental care
- Life insurance
Quick apply
12d
Golf Course Grounds Maintenance Worker
KANEFF PROPERTIES LTD —Niagara-on-the-Lake, ON
- $18 an hour
- Basic math
- Math
- Cleaning
Quick apply
Experienced Utility Locator
Canadian Locators Inc. —St. Catharines, ON
- $25–$30 an hour
- Full-time
- CPR Certification
- High school diploma or GED
- First Aid Certification
- Wellness program
- Dental care
Quick apply
National Lead, Access & Public Affairs - West
CSL —Ontario
- Full-time
- Master's degree
- Analysis skills
- Project management
AI Annotation Specialist Data Science - AI Trainer
DataAnnotation —St. Catharines, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Doctoral degree
- Computer Science
- Writing skills
- Flexible schedule
Quick apply
Operator/ lead hand/Labourer
Evolution Excavating —Fenwick, ON
- $27–$40 an hour
- Full-time
- Heavy equipment operation
- Maintenance
- Supervising experience
Quick apply
308a Sheet Metal Worker
VenTech Mechanical Services Inc. —Beamsville, ON
- $44–$54 an hour
- Full-time
- In-person
- Disability insurance
- Dental care
Quick apply
Therapist
Quest Community Health Centre —St. Catharines, ON
- $71,412.97–$88,268.54 a year
- Full-time
- English
- Microsoft Office
- Master's degree
- Employee assistance program
Quick apply
Landscape Construction lead hand
Mill River Landscape inc —St. Anns, ON
- $24–$30 an hour
- Seasonal
- Supervising experience
- Mentoring
- Organizational skills
Quick apply
Joist Welders
Steelcon Fabrication Inc. —Welland, ON
- Weekends as needed
- Basic math
- Forklift
- Math
- Dental care
- Paid time off
Quick apply
12d
Truck Driver (AZ License Required)
Steelcon Fabrication Inc. —St. Catharines, ON
- Overtime
- Customer service
- Heavy equipment operation
- Maintenance
- Dental care
- Paid time off
Quick apply
Kitchen Designer
Kitchen Studio Niagara —St. Catharines, ON
- $40,000–$90,000 a year
- Full-time
- Sales
- Communication skills
- Time management
Quick apply
Product Analyst - AI Trainer
DataAnnotation —Beamsville, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Doctoral degree
- Computer Science
- Writing skills
- Flexible schedule
Quick apply
Welder
Ontario Shipyards Inc. —St. Catharines, ON
- $25–$35 an hour
- Full-time
- Quality Control
- Designated paid holidays
- Disability insurance
Quick apply
ICI Construction Estimator
TreowGroup Recruitment —St. Catharines, ON
- $80,000–$100,000 a year
- Full-time
- Engineering
- Analysis skills
- Travel
Quick apply
13d
CAD Technician / CNC Programmer & Field Templator
KirkStone —Welland, ON
- $24–$29 an hour
- Full-time
- Heavy lifting
- Databases
- High school diploma or GED
Quick apply
11d
Chief Financial Officer (CFO)
Silvergate Homes Limited —Thorold, ON
- Full-time
- Finance
- Master's degree
- Analysis skills
- Disability insurance
- Paid time off
Quick apply
Solidworks CAD/CAM Tech
CMI Heavy Industries —Stevensville, ON
- $80,000–$110,000 a year
- Full-time
- Inventory control
- Engineering
- English
- Disability insurance
- Dental care
Quick apply
6d

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Data Science Manager - AI Trainer

DataAnnotation -
St. Catharines, 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 Data Science Manager - 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

project jobs in thorold, on

Data Science Manager - AI Trainer

Expert Carpenter

TIG Welder/Fabricator

Golf Course Grounds Maintenance Worker

Experienced Utility Locator

National Lead, Access & Public Affairs - West

AI Annotation Specialist Data Science - AI Trainer

Operator/ lead hand/Labourer

308a Sheet Metal Worker

Therapist

Landscape Construction lead hand

Joist Welders

Truck Driver (AZ License Required)

Kitchen Designer

Product Analyst - AI Trainer

Welder

ICI Construction Estimator

CAD Technician / CNC Programmer & Field Templator

Chief Financial Officer (CFO)

Solidworks CAD/CAM Tech

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