data annotator jobs in Toronto

1,074 data annotator job listings in Canada. Find daily updated positions from leading job boards.


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Crossing Hurdles Full-time

    Enhance multimedia accuracy as a Data Annotator, focusing on labeling video and audio clips with precision. Collaborate remotely with project teams to uphold content integrity and compliance. This role demands expertise in video and audio annotation, ensuring adherence to project guidelines. You will evaluate AI-generated descriptions, flag inaccuracies,...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada TransPerfect Full-time

    A global language solutions company is seeking a detail-oriented Hebrew Annotator for a remote role focused on transcribing and annotating data for AI initiatives. Candidates should be fluent in Hebrew and proficient in English, and have a Bachelor's degree or relevant experience. The ideal applicant will possess strong attention to detail and...


  • toronto, on, Canada Cohere Full-time

    Be a key player as a Data Annotation Specialist in engineering, focusing on task breakdowns that train machine learning models. This remote, part-time position allows for flexibility within Canada.Available exclusively to independent contractors in Canada, this role requires a minimum of 16 hours work per week at 30 CAD per hour for a 12-month contract....


  • Toronto, Ontario, Canada Alignerr Remote Full-time US$40 - US$80 Permanent

    Hospital Health Data Governance Lead (AI Training) About The Role What if your expertise in healthcare data governance could directly shape how AI understands and reasons about hospital systems, clinical records, and health compliance? We're looking for experienced Hospital Health Data Governance Leads to bring real-world knowledge to cutting-edge AI...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Mercor Full-time

    Mercor seeks experienced French Linguistic Experts to join a cutting-edge AI research project in partnership with a leading research lab. You will evaluate LLM French outputs, edit and annotate content, and provide linguistic insights to improve model performance. Candidates should be near-native in French, skilled in translation/editing and NLP data work,...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Waabi Full-time

    Take on a crucial role at Waabi as a Senior Product Designer specializing in tools for autonomous driving data. Enhance the integration of human expertise and automation for improved safety. As a part of Waabi's innovative team, you will design systems that bridge expert human judgment and automated tools. Your primary responsibilities will involve...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Welo Global Full-time €29 Temporary

    Welo Data is seeking a meticulous QC Specialist to review AI data annotation tasks. You will validate Trainer submissions against images and golden answers, flag issues, and provide constructive feedback to uphold data quality. This freelance, remote role offers 10 hours weekly and payment at $28.8 per hour. Ideal candidates are detail-focused with strong...


  • Toronto, ON, Canada Mercor Full-time €90,000 - €130,000 Contract

    Join Mercor as a Remote AI Red Team Specialist focused on enhancing AI safety. Utilize your skills in red teaming conversational models and generating human data to identify and address vulnerabilities. As a specialist with Mercor, you will work on adversarial inputs for AI models while collaborating with a team of data experts. Your focus will be on...


  • Toronto, ON, Canada Cambridge Cognition Ltd Full-time

    Join Cambridge Cognition as a Polish Transcriptionist, working remotely to transcribe clinical audio data. Utilize your attention to detail and linguistic skills to enhance patient care. In this independent contractor position, you will transcribe clinical data from audio recordings into Polish. Your role involves not just transcription, but also annotating...

  • Operations Analyst

    2 days ago


    Toronto, Ontario, Canada Waabi Full-time US$90,000 - US$120,000 Contract

    Waabi, founded by AI visionary Raquel Urtasun, is the leader in Physical AI. With a world-class team, we're unlocking the next era of autonomous transportation with technology that's powering commercial autonomous trucks and robotaxis. Waabi is backed by and partners with world leaders in AI, automotive, logistics, and deep tech. With offices in Toronto,...


  • Toronto, ON, Canada F5 Remote Jobs Full-time

    Design LLM prompt strategies remotely from Canada, using Python and evaluation metrics to improve data annotation accuracy and localization quality.Innodata Inc. is building a Prompt Engineer team to automate and optimize annotation and human evaluation workflows. You will translate business requirements into scalable AI solutions with Product, Data Science,...


  • Toronto, ON, Canada Waabi Full-time $139,000 - $277,000 Contract

    Take on a crucial role at Waabi as a Senior Product Designer specializing in tools for autonomous driving data. Enhance the integration of human expertise and automation for improved safety. As a part of Waabi's innovative team, you will design systems that bridge expert human judgment and automated tools. Your primary responsibilities will involve...


  • Toronto, ON, Canada Cohere Full-time

    Shape safer Large Language Models through statistical evaluation and machine learning, working remotely or from Cohere offices with UK/EU overlap. As a Senior Member of Technical Staff, you will develop safety methods for agents accessing external resources and taking actions. Your work combines ethical AI, experimental design, data generation, and software...

  • Gen AI Engineer

    3 days ago


    Toronto, ON, Canada F5 Remote Jobs Full-time

    Job Details Company: Innodata Inc. Position: Gen AI Engineer Location: Remote - Canada Innodata (Nasdaq: INOD) is a global data engineering company. We believe that data and Artificial Intelligence (AI) are inextricably linked. Our mission is to enable the responsible advancement of artificial intelligence by providing the data, evaluation frameworks, and...

  • Generalist Expert

    3 days ago


    Toronto, ON, Canada YO AI Labs Remote Full-time $52,000 - $76,000 Contract

    GeneralistJob Type: ContractorLocation: RemoteRole OverviewWe are looking for Generalists with strong analytical and critical-thinking skills to support AI and data-focused projects. The role involves reviewing, evaluating, and annotating information across different topics while maintaining high accuracy and quality.Key ResponsibilitiesAnalyze, review, and...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Cohere Inc. Full-time

    Cohere Inc. is hiring for a Member of Technical Staff in the Safety for Agents team. You will impact the development of safer, more trustworthy LLMs, focusing on data generation, post-training algorithms, and evaluation methods to ensure safety as models access external resources. You will work with cross-functional ML teams and data annotation teams,...


  • Toronto, ON, Canada Cohere Inc. Full-time €140,000 - €190,000 Contract

    Cohere Inc. is hiring for a Member of Technical Staff in the Safety for Agents team. You will impact the development of safer, more trustworthy LLMs, focusing on data generation, post-training algorithms, and evaluation methods to ensure safety as models access external resources. You will work with cross-functional ML teams and data annotation teams,...


  • Toronto, Ontario, Canada RWS Full-time

    We are looking for AI Conversation Recording Contributors to join an French (Quebec) speech data collection project and help support the evaluation and development of the next generation of AI technologies.Job Type: FreelanceLocation: Work from homeWork Schedule: Flexible, task-based work (approximately 2–4 hours daily)Project Duration: TBCStart Date:...

  • Chemistry Masters

    2 days ago


    Toronto, Ontario, Canada Alignerr Remote Full-time US$35 - US$55 Permanent

    Chemistry Masters — AI Data Trainer About The Role We're looking for chemistry experts to help train and improve the next generation of AI models. At Alignerr, we partner with the world's leading AI research labs — and we need people who truly understand chemistry to help AI think more rigorously about it. If you have a Master's in Chemistry, Chemical...


  • Toronto, ON, Canada Cambridge Cognition Ltd Full-time

    Cambridge Cognition Ltd seeks a Japanese Linguistic Consultant to guide the engineering team in automated linguistic analysis across languages within our AI platform. This independent contractor role emphasizes verification and validation of methodology to improve software scientific validity.The role requires annotating Japanese data, collaborating with...