data annotator jobs in Ottawa

377 data annotator job listings in Canada. Find daily updated positions from leading job boards.


  • Ottawa, Ontario, Canada Cohere Full-time

    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 of AI...


  • Ottawa, Ontario, Canada Cohere Full-time

    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 of AI...


  • Ottawa, Ontario, Canada Toloka Annotators Full-time

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English.At Toloka, we connect smart, curious people from around the world with freelance online tasks that train and improve artificial intelligence. What we doThe...


  • Ottawa, Ontario, Canada Dataforce Full-time

    Work Location: Alberta, British Columbia, or Quebec; remote Work Schedule: Full-time (40 hours/week), Monday – Friday; business hours Engagement Model: Employment; fixed term/temporary Start Date: Immediate Project duration: Until September 2025 DataForce by TransPerfect is currently looking for a Language Data Annotator with idiomatic fluency in English...


  • Ottawa, ON, Canada Welo Global Full-time

    Welo Data is seeking a detail-oriented Quality Control Specialist to review Trainer submissions for an AI data annotation project. This remote-friendly role requires meticulous review to confirm accuracy and consistency, with feedback provided to improve data quality.You will verify answers against images, flag issues, and report patterns to the team. A...


  • Ottawa, Ontario, Canada Cohere Inc. Full-time

    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 of AI...


  • Ottawa, Canada emplify GmbH Full-time €25,000 - €37,000 Contract

    TELUS Digital is seeking an AI Data Annotation Specialist with Finnish to oversee review and management of user-generated content, ensuring quality and adherence to guidelines. This remote role in Poland focuses on content moderation, with responsibilities spanning policy-compliant judgments and cross-team coordination. Ideal candidates possess Finnish...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Rex.zone Full-time €30 - €50

    Remote Data Annotator (Full-Time, Remote) Rex.zone helps candidates discover and apply to remote data annotator roles supporting modern AI/ML training pipelines. In this role, you will create labeled datasets and evaluation signals that improve training data quality and large language model performance across NLP, computer vision, and content safety...


  • Ottawa, ON, Canada Rex.zone Full-time

    Remote Data Annotator (Full-Time, Remote) Rex.zone helps candidates discover and apply to remote data annotator roles supporting modern AI/ML training pipelines. In this role, you will create labeled datasets and evaluation signals that improve training data quality and large language model performance across NLP, computer vision, and content safety...


  • Ottawa, Ontario, Canada Cohere Inc. Full-time

    Cohere Inc. is seeking a Data Annotation Specialist for a part-time, independent contractor role based in Canada. The position focuses on evaluating data science tasks, debugging code, and assessing model behavior across coding workflows.You will label and improve outputs, review model trajectories, and provide feedback on code. The role is remote within...


  • Ottawa, ON, Canada Rex.zone Full-time

    About Rex.zoneRex.zone is hiring Toronto-based candidates for full-time remote data annotation and data labeling work that improves training data quality for AI/ML systems. You will support real-world LLM training pipelines through evaluation, QA, and careful rubric-driven judgments.About Rex.zoneRex.zone is hiring Toronto-based candidates for full-time...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Rex.zone Full-time

    About Rex.zone Rex.zone is hiring Toronto-based candidates for full-time remote data annotation and data labeling work that improves training data quality for AI/ML systems. You will support real-world LLM training pipelines through evaluation, QA, and careful rubric-driven judgments. About Rex.zone Rex.zone is hiring Toronto-based candidates for...

  • AI Data Annotator

    1 week ago


    Ottawa, Ontario, Canada Welo Global Full-time

    OVERVIEWWe are seeking skilled and detail-oriented individuals to join our team as AI Data Annotators. In this role, you will be responsible for performing rating and annotation work that is essential to our AI development process. If you are meticulous and passionate about contributing to the advancement of AI technology, we invite you to apply and become a...


  • Ottawa, ON, Ottawa Census Division, ON; Ontario, Canada Welo Global Full-time

    Contribute to cutting-edge AI solutions as a Part-time Data Annotation Specialist. This remote, temporary position offers a unique opportunity to apply your language skills in a crucial role. Ideal candidates are detail-oriented individuals who are fully proficient in French-Canadian, with advanced proficiency in English. You will play an essential part in...


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

    Join to apply for the English Language Data Annotator (British Columbia, remote) role at TransPerfect Work Location: British Columbia; remote Work Schedule: Full-time (40 hours/week), Monday – Friday; business hours Engagement Model: Employment; fixed term/temporary Start Date: Immediate Project duration: Until September 2025 DataForce by...


  • Ottawa, Ontario, Canada Toloka Annotators Full-time

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English.At Toloka, we connect smart, curious people from around the world with freelance online tasks that train and improve artificial intelligence. What we doThe...


  • Ottawa, ON, Canada Crossing Hurdles Full-time

    Shape the future of robotics by utilizing your photography skills in video annotation. This remote position focuses on detailed review and tagging of footage involving robotic arms. In this role, you will review video footage, apply detailed annotation, and evaluate the visual quality of robotic tasks. Your professional photography background will help in...


  • Ottawa, ON, Canada Rex.zone Remote Full-time $59,000 - $98,000 Contract

    About Rex.zoneRex.zone is hiring for remote data labeling jobs aligned to Ottawa job seekers supporting AI/ML training workflows. You will create and evaluate high-quality training data for large language models and computer vision systems, improving training data quality and model performance.Rex.zone is hiring for remote data labeling jobs aligned to...


  • Ottawa, Ontario, Canada Corpshore Solutions Corporation Full-time

    Frontier models are now measured substantially on their reasoning in mathematics, physics, chemistry, biology, engineering and computer science. Improving that requires people who can tell a correct derivation from a plausible-looking wrong one, which is a much narrower population than general annotation requires and is paid accordingly.You will write...

  • Data Scientist

    4 days ago


    Ottawa, ON, Canada Alignerr Corp. Full-time

    Data Scientist (Masters) — AI Data Trainer About The Role What if your expertise in machine learning, statistical inference, and data engineering could directly shape how the world's most advanced AI models think and reason? We're looking for Masters-level data scientists to challenge, stress-test, and refine cutting-edge AI systems — helping ensure they...