Jobs for data annotator at Toronto

1,000 data annotator job listings in Canada. Find daily updated positions from leading job boards.


  • Toronto, ON, Canada Mercor Full-time $50,000 - $70,000 Contract

    Join Mercor to enhance document AI by annotating Odia documents. This role prioritizes your native language skills through tasks like transcription and structural mapping. As a Document Annotation Specialist at Mercor, you'll utilize your native Odia fluency to create critical training data. The project centers on real-world Odia documents, focusing on...

  • Medical Editor Premium

    4 days ago


    Toronto, Ontario, Canada Publicis Groupe Full-time $80,000 - $85,000 Contract

    Company Description Publicis is an omni-channel communications agency with over 600 employees across our Canadian operations. The office is the largest in our industry in Canada and boasts talent across various disciplines of marketing and advertising expertise. Publicis carries a balanced split of Canadian, U.S. and Global clients for which we...


  • Toronto, ON, Canada Mercor Full-time $42,000 - $60,000 Contract

    Join Mercor as an Expert Telugu Document Annotation Specialist, leveraging your language skills to refine document AI capabilities. This role emphasizes accuracy and systematic analysis of various Telugu documents. As a native Telugu speaker, you will engage in detailed document annotation and transcription, contributing to projects that aid in...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Obsidian Full-time €33 Temporary

    Fluent Language Skills Required: Japanese. Native fluency in Japanese, including full command of kanji, hiragana and katakana, is required for this position. All annotation and transcription work is performed in Japanese. Why This Role Exists Document understanding breaks down fastest in the languages that parsing and vision-language models rarely see....

  • AI Session Reviewer

    6 days ago


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

    About the Role Mercor is hiring English-speaking reviewers to evaluate recorded sessions with a voice-and-camera AI assistant. You will watch each session, compare what the assistant said against what was actually visible in the video, and score it against a detailed rubric. Your written comments are the deliverable. What you flag as a failure is what...


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

    Mecka AI is building the data infra layer for robotics and embodied AI, enabling data capture, labeling, and hardware-enabled workflows used by leading AI labs. You will own the internal annotation platform and develop lightweight ML services like PII blurring, balancing privacy and data preservation. You will join a hybrid engineering role bridging...


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

    Domain Expert – Diagnostic Imaging (Visage 7 Research) To qualify you must use Visage 7 regularly — weekly or more — as a working part of your job, with 2+ years of professional experience in radiology, imaging operations, or imaging IT. Visage 7 knowledge we require Study interpretation & measurement Establishing a patient's current imaging...


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

    About the job RQ08350 - Software Developer - Senior Description Work with Business Analysts / UX & UI Designer / Product Manager / Cloud Architect, based on storyboard, user stories, UI/UX artefacts, solution architecture, security requirements, data models, develop application design and technical specification document, deliver quality software products...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Mindrift Full-time €45 Temporary

    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 Mindrift, innovation meets opportunity. We believe in using the power of collective human intelligence to ethically shape the future of AI. What We...


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

    Mercor is seeking experienced German Linguistic Experts to join a cutting-edge AI research project. The role focuses on evaluating LLM performance in German-language tasks and curating high-quality German linguistic data to train and improve model understanding and generation capabilities. You will edit, annotate, and provide linguistic feedback while...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Obsidian Full-time €50 Temporary

    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...

  • Pharmacy Expert

    6 days ago


    Toronto, ON, Toronto Census Division, ON; Ontario, Canada Obsidian Full-time

    Domain Expert - Pharmacy (UpToDate Lexidrug) To qualify you must use UpToDate Lexidrug (or Lexicomp) regularly - weekly or more - as a working part of your job, with 2+ years of professional pharmacy experience. Lexidrug knowledge we require Core (required of all candidates) Knows how to work a full medication-list interaction check to completion - not...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Jaide Health Full-time €250,000 - €300,000 Temporary

    WHO WE ARE: Peripheral is developing spatial intelligence, starting in live sports and entertainment. Our models generate spatial data, used for advanced sports analytics and immersive media experiences. We're solving key research challenges in 3D computer vision, creating the foundations for the next generation of robotic perception and embodied...

  • API Automation Engineer Premium

    14 hours ago


    Greater Toronto Area, Canada Infowaysolutions Full-time

    Job Title: API Automation Engineer Location: Sunnyvale, CA Department: Quality Assurance / Software Engineering Job Overview: We are looking for a talented and detail-oriented API Automation Engineer to join our team. The ideal candidate will be responsible for designing, implementing, and maintaining automated tests for our RESTful APIs using...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada SELLIT9 Full-time

    About the Role SELLIT9 runs on one number: what a used device is worth. Two models decide whether we get that number right, and you'll own both. The first is pricing . We're building an append-only, point-in-time-correct dataset of competitor payouts, retail prices, and resale comps, built specifically to be trained on. The deterministic version ships...


  • Toronto, Ontario, Canada Fidelity Canada Full-time

    Job DescriptionPlease note:Current work authorization for Canada is required for all openings.You will be working on a flexible hybrid schedule as part of Fidelity’s dynamic working arrangement.This is a full-time regular opportunity.The work location for this role is 483 Bay Street in Toronto until approximately late 2026, when the work location will...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Fashion Institute of Design & Merchandising Full-time

    At HDR, our employee‑owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our...


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

    The Role We’re hiring a Country Operations Lead, Canada to own and grow Mecka’s on-the-ground operations in Canada. Canada is a strategic operating geography for Mecka — home to a deep talent pool across robotics, ML, and hardware, proximity to many of our North American customers and research partners, and a strong base for data capture,...

  • AEM Technical Lead Premium

    14 hours ago


    Greater Toronto Area, Canada Infowaysolutions Full-time

    Job Title: AEM Technical Lead Location: Austin & Sunnyvale Role Overview: AEM Technical Lead providing specific technical direction for the development activities: Experience Required: 5 - 8 years of strong Web Content Management experience with Adobe AEM / CQ5 Implementing 3+ full cycle AEM projects (Templates & Components, Workflows, Replication...


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

    Draftaid started by auto-generating manufacturing drawings from 3D CAD parts. We are now building the intelligence layer for mechanical engineering. What you’ll do Build product features end-to-end: Node backend, React/TypeScript frontend, Postgres Create interactive interfaces for viewing and annotating 3D and 2D CAD data Integrate with our geometry...