data annotator jobs in Toronto

Contribute your legal expertise as a Corporate Attorney in a fully remote role focused on advancing next-gen AI systems. Help shape AI performance through your nuanced legal insights. This is a contractor role suitable for candidates in Canada with a strong background in mergers and acquisitions, corporate law, or commercial litigation. You'll engage in...

Health Policy & Management – AI Content Specialist About The Role Your public health expertise is more valuable than ever — and not just in traditional settings. At Alignerr, we partner with the world's leading AI research labs to build smarter, safer AI systems. We're looking for Masters in Public Health (MPH) professionals to help train and evaluate...

IMPORTANT: after you apply, please check your email. We send you a link to complete your application — it is not considered until that last step is done. If you do not see it, check your spam folder. This is a fully remote position , open to candidates based in Canada. Pay: $28–$92/hr Role Title: HubSpot Specialist Role Type: Contractor Location: Remote...

About The Role What if your ear for Korean and obsession with precision could directly shape how AI understands spoken language? We're looking for detail-oriented Korean Audio Transcript Editors in Toronto and across Canada to clean up, correct, and polish audio transcripts — ensuring every word, timestamp, and formatting detail is exactly right. This is...

IMPORTANT: after you apply, please check your email. We send you a link to complete your application — it is not considered until that last step is done. If you do not see it, check your spam folder. This is a fully remote position , open to candidates based in Canada. Pay: $90–$170/hr Role Title: Stripe Specialist Role Type: Contractor Location: Remote...

General Postdoctoral Researcher (AI Training) About The Role What if your years of advanced research could directly shape the intelligence of the AI systems that millions of people will rely on? We're looking for Masters and PhD-level researchers to bring their domain expertise to the frontier of AI development — designing and solving the complex,...

IMPORTANT: after you apply, please check your email. We send you a link to complete your application — it is not considered until that last step is done. If you do not see it, check your spam folder. This is a fully remote position , open to candidates based in Canada. Pay: $100–$200/hr Role Title: Developmental Psychology (PhD) Role Type: Contractor...

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption...

IMPORTANT: after you apply, please check your email. We send you a link to complete your application — it is not considered until that last step is done. If you do not see it, check your spam folder. This is a fully remote position , open to candidates based in Canada. Pay: $22–$70/hr Role Title: Senior AI Trainer Role Type: Contractor, Remote ...

Must have: must have experience Azure data tools - azure, databricks, MLflow, python Exposure to LLM frameworks (DSPy, LangChain, Hugging Face, or equivalent). Familiarity with Python and libraries like pandas, scikit-learn, or PyTorch. Experience and Skill Set Requirements Role Overview: The Government of Ontario is embarking on a large Data & AI...

Machine Learning Engineer (AI Data Trainer) About The Role What if your deep technical expertise could directly shape how the next generation of AI models reason, plan, and solve real-world problems? We're looking for Machine Learning Engineers to help train and improve large language models by demonstrating how expert-level thinking actually works —...

Mechanical Engineering Expert — AI Content Specialist About The Role What if your engineering knowledge could help shape the next generation of AI? At Alignerr, we partner with the world's leading AI research labs to build smarter, more technically rigorous AI models — and we need real engineers to make it happen. As a Mechanical Engineering Expert,...

About The Role What if your MBA — your deep knowledge of corporate finance, strategy, and operations — could directly shape how AI advises executives and drives business decisions around the world? We're looking for Business Administration experts to challenge, evaluate, and train advanced AI models on the kind of complex, high-stakes reasoning that...

Physics Subject Matter Expert (AI Training) About The Role We're partnering with the world's leading AI research labs to make AI smarter — and we need physicists to help get it there. As a Physics Subject Matter Expert, you'll use your advanced knowledge to challenge, evaluate, and improve how AI systems reason through complex physics problems. Your...

Mercor is seeking experienced German Linguistic Experts to join a cutting-edge AI research project in partnership with a leading research lab. This role centers on evaluating how effectively a large language model (LLM) performs in French-language tasks and on curating high-quality French linguistic data to train and improve the model's understanding and...

Biochemistry Subject Matter Expert (AI Training) About The Role We're looking for PhD-level Biochemists to help evaluate and improve the world's most advanced AI systems. Your scientific expertise will directly shape how AI reasons through complex topics like protein folding, metabolic flux, enzyme kinetics, and molecular genetics — making a real impact...

Masters & PhD Researcher (AI Training) - Alignerr About The Role What if your years of graduate research could directly shape the intelligence of AI systems used by millions of people worldwide? We're looking for Masters and PhD researchers to bring their deep domain expertise to one of the most consequential challenges in technology — teaching AI to...

Position Summary The Senior Medical Writer develops clear, scientifically accurate, and compelling content for pharmaceutical, biotechnology, and medical device clients. This role requires expertise across therapeutic areas, strategic communications support, and a commitment to excellence, accuracy, and compliance. The Senior Medical Writer partners with...

About The Role We're looking for experienced forestry and land management scientists to help shape how AI understands sustainable forest management, land-use planning, and environmental decision-making. Your field expertise will directly influence the accuracy and reliability of AI systems used by researchers, practitioners, and policymakers...

Come be a part of our mission and make a meaningful and positive impact with the industry leading provider of language services for the Deaf and hard-of-hearing!Pay Range: Actual pay may vary up or down depending on job-related factors which may include knowledge, skills, experience, and location. In addition, this position may be eligible for incentive...