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 Altis Labs Full-time €120,000 - €160,000 Contract

    What We Do We build AI models to enable smaller, faster, and more successful clinical trials. What We Do We build AI models to enable smaller, faster, and more successful clinical trials. About Altis Labs Altis Labs is a computational imaging company focused on improving how oncology trials measure treatment benefit. Our core technology is IPRO, an AI...

  • Rq00736 Premium

    18 hours ago


    Toronto, Ontario, Canada Source Code Full-time $92 - $110 Permanent

    RQ00736 - Specialized IT Consultant - Senior 1 Year contract - Hybrid(3 Days) /remote also possible for candidates outside of GTA+ 2 Possible extensions of 6 months eachLocation : Metro Hall – 55 John Street, 2nd Fl Must Haves: This is a Maximo Functional Consulting Role 1. 10+ years hands-on Maximo configuration experience...


  • Toronto, Ontario, Canada Socket.dev Full-time

    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...


  • Toronto, Ontario, Canada Jaide Health Full-time

    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...


  • Toronto, ON, Canada Jaide Health Full-time

    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...

  • Pharmacy Expert

    17 hours ago


    Toronto, ON, 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 just...

  • Security Analyst

    2 days ago


    Toronto, ON, Canada Obsidian Full-time $322,875 - $396,675 Contract

    Role OverviewMercor is partnering with leading AI labs to engage experienced cybersecurity professionals — security analysts, penetration testers, incident responders, threat intelligence specialists, and security architects — to improve AI systems' reasoning around threat detection, vulnerability assessment, and security operations. Contributors will...

  • Content Editor

    4 days ago


    Toronto, ON, Toronto Census Division, ON; Ontario, Canada YO IT Consulting Full-time

    Job Type: Contract, Part-time Location: Remote Role Description In this hourly, remote contractor role, you will work as a Copywriting & Content Subject Matter Expert (SME) to review AI-generated marketing/content-writing outputs and/or create expert copy and content, evaluating reasoning quality, intent alignment, and step-by-step writing decisions...

  • Content Writer

    4 days ago


    Toronto, ON, Toronto Census Division, ON; Ontario, Canada YO IT Consulting Full-time

    Job Type: Contract, Part-time Location: Remote Role Description In this hourly, remote contractor role, you will work as a Copywriting & Content Subject Matter Expert (SME) to review AI-generated marketing/content-writing outputs and/or create expert copy and content, evaluating reasoning quality, intent alignment, and step-by-step writing decisions...


  • Toronto, ON, Canada Mindrift Full-time

    Freelance Software Developer (Java) - Quality Assurance (AI Trainer) 3 days ago – Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. 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...


  • Toronto, Canada Welo Global Remote Full-time

    As a trusted global transformation partner, Welocalize accelerates the global business journey by enabling brands and companies to reach, engage, and grow international audiences. Welocalize delivers multilingual content transformation services in translation, localization, and adaptation for over 250 languages with a growing network of over 400,000...

  • Aerospace Engineer

    4 days ago


    Toronto, ON, Toronto Census Division, ON; Ontario, Canada YO IT Consulting Full-time

    Job Type: Contractor Location: Remote Role Description If you’re an aerospace engineering expert who thrives on technical precision, systems thinking, and rigorous analysis, this is a unique opportunity to contribute directly to how the next generation of AI systems reason about flight, propulsion, structures, aerodynamics, controls, and...

  • Aerospace Engineer

    3 days ago


    Toronto, ON, Canada YO IT Consulting Full-time $90,000 - $120,000 Contract

    Job Type: Contractor Location: Remote Role Description If you’re an aerospace engineering expert who thrives on technical precision, systems thinking, and rigorous analysis, this is a unique opportunity to contribute directly to how the next generation of AI systems reason about flight, propulsion, structures, aerodynamics, controls, and mission‑critical...


  • Toronto, ON, Canada Obsidian Full-time $120,000 - $160,000 Contract

    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...

  • Copywriter - Remote

    3 days ago


    Toronto, ON, Canada YO IT Consulting Full-time $41,328 - $68,880 Contract

    Job Type: Contract, Part-time Location: Remote Role Description In this hourly, remote contractor role, you will work as a Copywriting & Content Subject Matter Expert (SME) to review AI-generated marketing/content-writing outputs and/or create expert copy and content, evaluating reasoning quality, intent alignment, and step-by-step writing decisions while...

  • COURT CLERK MONITOR

    4 days ago


    Toronto, Ontario, Canada City of Toronto Full-time

    Select how often (in days) to receive an alert: Create AlertDivision & Section: Toronto Court Services, TO Court and Tribunal OperationsWork Location: 1530 Markham Rd, 2700 Eglinton Avenue West & 92 Front St. East.Job Type & Duration: Full-time, Permanent and Temporary (18 & 12 months) VacanciesHourly Rate and Wage Grade: $36.77 – $40.13Shift Information:...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Obsidian Full-time €70 Temporary

    Are you a Level 3 / Tier 3 network support engineer interested in data science and autonomous infrastructure? Our client is building vertically integrated networking systems and using the data they generate to power the next generation of AI-driven infrastructure. They’re looking for engineers experienced in final escalations, packet analysis,...

  • Student, Analytics

    17 hours ago


    Toronto, Ontario, Canada Sun Life Financial Full-time

    At Sun Life, we're driven by our Purpose: helping our Clients achieve lifetime financial security and live healthier lives. Our values shape how we work: caring, authentic, bold, inspiring, and impactful. Our student and new graduate programs offer a chance to explore Sun Life from the inside.You'll make a difference in the lives of our customers and...


  • Toronto, Ontario, Canada Benchstrength Full-time

    What We DoWe build AI models to enable smaller, faster, and more successful clinical trials.About Altis LabsAltis Labs is a computational imaging company focused on improving how oncology trials measure treatment benefit. Our core technology is IPRO, an AI model that generates patient-level outcome predictions directly from routine medical imaging data. Our...


  • Toronto, Ontario, Canada Source Code Full-time

    RQ09756/RQ09775 - Sr. Training Specialist About the job RQ09756/RQ09775 - Sr. Training Specialist RQ09756/RQ09775 - Sr. Training SpecialistOn-site - Manager's discretionContract 6-7+ monthsSecurity Level: CRJMC (must get clearance before start date)Support sandbox data preparation and environment setup for training and testing purposes within Microsoft...