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Data scientist Jobs in Markham, ON

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Data scientist • markham on

Last updated: 21 hours ago

Remote Senior Data Scientist - AI Trainer

SuperAnnotateWillowdale, Ontario, CA
Remote
Full-time

As a Senior Data Scientist, you will work remotely on an hourly paid basis to review AI-generated analytical reasoning, code, and model outputs, as well as generate high-quality reference solutions...Show more

Senior Data Scientist, Commercial Price Modeling

AvivaMarkham
Full-time

Individually we are people, but together we are Aviva.Individually these are just words, but together they are our Values – Care, Commitment, Community, and Confidence.At Aviva Canada, we put peopl...Show more

Regulatory Senior Scientist

Great ConnectionsMarkham, ON
Full-time +1

Our client is a leading manufacturers, marketers, and sellers of quality skin care, makeup, fragrance, and hair care products.The client is looking for a Senior Regulatory Scientist to join the gro...Show more

Sr. Research Scientist (Polymer & Bioconjugate Chemistry)

fluidigmMarkham, ON, CA
Full-time

Research Scientist (Polymer & Bioconjugate Chemistry).Job Locations CA-ON-Markham Req No.Category Research & Development Type Regular.Would you like to join an innovative team driven by a bold visi...Show more

Environmental Project Manager, Scientist or Engineer

AECOMMarkham, Ontario, Canada
Full-time

AECOM Canada is seeking an experienced.Environmental Project Manager, Scientist, or Engineer.Contaminated Site Assessment and Remediation team in Ontario.This position offers the opportunity to lea...Show more

Remote Senior Data Scientist - AI Trainer

SuperAnnotateVaughan, Ontario, CA
Remote
Full-time

As a Senior Data Scientist, you will work remotely on an hourly paid basis to review AI-generated analytical reasoning, code, and model outputs, as well as generate high-quality reference solutions...Show more

Big Data Architect

BMO Financial GroupScarborough, ON
Temporary

BMO is an organization driven by a shared Purpose: Boldly Grow the Good in business and life.It calls on members of its team, to create lasting, positive change for its customers, its communities, ...Show more

Senior Data Scientist II

RELXCanada, Gordon Baker Rd, Toronto
Full-time

The Senior Data Scientist II will leverage advanced analytics and machine learning techniques to extract insights from complex data sets.They will collaborate with cross-functional teams to drive d...Show more

Pharmacovigilance Scientist (Associate Director)

Astellas Pharma Inc.Markham, ON
Full-time

As a key member of the PV Product Responsible team for his/her assigned products, and under the close supervision of the [Associate] Medical Director-level Product Responsible Person (PRP) the PV S...Show more

Data Analyst

LancesoftScarborough, ON, CA
Full-time
Quick Apply

Location Address: 150 King Street W 26th floor.Work arrangement: (Hybrid) 2 days –Flexible.Contract Duration: ASAP - Oct 31st.Possibility of extension: Possible, depending on business case and fund...Show more

 • New!

Remote Senior Data Scientist - AI Trainer

SuperAnnotateScarborough, Ontario, CA
Remote
Full-time

As a Senior Data Scientist, you will work remotely on an hourly paid basis to review AI-generated analytical reasoning, code, and model outputs, as well as generate high-quality reference solutions...Show more

Data Architecture & Governance Advisor - Spanish Required

Cuso InternationalRichmond Hill, Ontario
Permanent

This Volunteer Placement is Located in:.Please submit a Spanish Resume and Statement of Interest.Open to Canadian Citizens and Permanent Residents of Canada only.This volunteer placement offers a u...Show more

 • Promoted

Remote Senior Data Scientist - AI Trainer

SuperAnnotateRichmond Hill, Ontario, CA
Remote
Full-time

As a Senior Data Scientist, you will work remotely on an hourly paid basis to review AI-generated analytical reasoning, code, and model outputs, as well as generate high-quality reference solutions...Show more

Remote Senior Data Scientist - AI Trainer

SuperAnnotateNorth York, Ontario, CA
Remote
Full-time

As a Senior Data Scientist, you will work remotely on an hourly paid basis to review AI-generated analytical reasoning, code, and model outputs, as well as generate high-quality reference solutions...Show more

Data Scientist

BGISMarkham, ON, Canada
Full-time

BGIS is a leading provider of customized facility management and real estate services.With our combined team of over 6,500 globally, we relentlessly focus on enabling innovation through the service...Show more

Remote Senior Data Scientist - AI Trainer

SuperAnnotateMarkham, Ontario, CA
Remote
Full-time

As a Senior Data Scientist, you will work remotely on an hourly paid basis to review AI-generated analytical reasoning, code, and model outputs, as well as generate high-quality reference solutions...Show more

Environmental Project Manager, Scientist or Engineer

AECOMMarkham, CAN
Full-time

At AECOM, we're delivering a better world.Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thr...Show more

Senior Data Scientist

AvivaMarkham ON 10 Aviva Way, Canada
Full-time

Individually we are people, but together we are Aviva.Individually these are just words, but together they are our Values – Care, Commitment, Community, and Confidence.At Aviva Canada, we put peopl...Show more

Product Development Scientist (Temp)

fluidigmMarkham, ON, CA
Full-time

Product Development Scientist (Temp).Job Locations CA-ON-Markham Req No.Category Research & Development Type Temporary Employee.Would you like to join an innovative team driven by a bold vision –.I...Show more

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Remote Senior Data Scientist - AI Trainer

Remote Senior Data Scientist - AI Trainer

SuperAnnotateWillowdale, Ontario, CA
30+ days ago
Job type
  • Full-time
  • Remote
Job description

As a Senior Data Scientist, you will work remotely on an hourly paid basis to review AI-generated analytical reasoning, code, and model outputs, as well as generate high-quality reference solutions and explanations for complex data problems. You will assess solutions for accuracy, clarity, and adherence to the prompt; identify errors in methodology, modeling choices, or statistical reasoning; fact-check quantitative claims; write clear, step-by-step explanations and model solutions that demonstrate correct methods; and rate and compare multiple AI responses based on correctness and reasoning quality.

This is a fully remote, hourly paid contractor role with SME Careers, a fast-growing AI data services company and subsidiary of SuperAnnotate that provides AI training data to many of the world’s largest AI companies and foundation model labs. Your data science expertise will directly contribute to improving the world’s premier AI models used across products and industries.

Key Responsibilities :

  • Develop AI Training Content : Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects.
  • Optimize AI Performance : Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance.
  • Ensure Model Integrity : Test AI models for potential inaccuracies or biases, validating their reliability across use cases.

Your Profile :

  • Bachelor’s degree or higher in Data Science, Computer Science, Statistics, Mathematics, or a closely related quantitative field.
  • 5+ years of professional experience as a Data Scientist or in a closely related analytical role, working on end-to-end machine learning projects.
  • Strong proficiency in Python for data analysis and machine learning, including libraries such as pandas, NumPy, scikit-learn, and related tooling.
  • Solid background in statistics, experimental design, and applied probability, with experience designing and analyzing controlled experiments.
  • Hands-on experience building, evaluating, and deploying machine learning models in real-world business or product environments.
  • Advanced SQL skills and comfort working with large, complex datasets from data warehouses or data lakes.
  • Minimum C1 English proficiency (written and spoken), with the ability to write clear quantitative explanations and follow detailed English-language guidelines.
  • Experience with data visualization tools or dashboards and the ability to present analytical findings to stakeholders.
  • Previous experience with AI data training, annotation, or reviewing AI-generated analytical content is a strong plus.
  • Highly detail-oriented and systematic, with a strong focus on quality, reproducibility, and careful evaluation of reasoning steps.