Jobs for data annotations at Toronto

Rex.zone is hiring full-time remote Online Generalists in Canada to support AI/ML data operations that power large language model training pipelines. You will complete online tasks such as data labeling, RLHF preference ranking, prompt evaluation, QA evaluation, and content safety labeling across NLP and computer vision datasets. Responsibilities Perform...

Overview Join our customer's team as a Chemistry - AI Trainer and play a pivotal role in shaping the next generation of AI‑driven chemistry solutions. In this full‑time, remote position, you will leverage your chemistry expertise to enhance and train AI models, ensuring precise and contextually accurate chemical knowledge. If you are passionate about...

Join to apply for the Freelance Photo Editor role at TransPerfect Work Location: Canada (remote/work from home) Workload: Flexible schedule (preferred weekly availability is 20 hours or more) DataForce by TransPerfect is looking for freelance Photo Editors to join a creative and dynamic AI training project aimed at enhancing visual content quality and...

Develop and curate training materials, case scenarios, and activities based on real-world recreational therapy practices. Train AI systems on therapeutic concepts including sports, arts, music, relaxation techniques, and social engagement. Review and annotate AI outputs to ensure clinical accuracy, empathy, and adherence to approved therapeutic methods. ...

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...

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,...

Research Coordinator I RADIS Research and Simulation Lab(Job Id 16151) Job title: Research Coordinator I RADIS Research and Simulation Lab Job ID: 16151 Site: CA:ON:Toronto:St. Michael's Hospital Category: Research Work type: Full-Time Temporary Date posted: July 22, 2026 Salary range: 39.11-48.89 Shift/ hours of work: Description Research...

Who are we? Our mission is to scale intelligence to serve humanity. We’re training and deploying frontier models for developers and enterprises who are building AI systems to power magical experiences like content generation, semantic search, RAG, and agents. We believe that our work is instrumental to the widespread adoption of AI. We obsess over what we...

Develop and curate training materials, case scenarios, and activities based on real-world recreational therapy practices.Train AI systems on therapeutic concepts including sports, arts, music, relaxation techniques, and social engagement.Review and annotate AI outputs to ensure clinical accuracy, empathy, and adherence to approved therapeutic...

Physics Masters – AI Training Specialist About The Role We're looking for Masters-level physicists to help train and evaluate some of the world's most advanced AI models. Your deep understanding of physics will directly shape how AI reasons through complex problems — from classical mechanics to quantum theory. This is a fully remote, flexible contract...

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, annotation,...

Job Description Job Title: Biology Quality Assurance Lead Job Type: Contract Location: Remote About This Role In this hourly, remote contractor role, you will work as a Biology Quality Assurance Lead to oversee quality, consistency, and trainer performance across biology AI training projects. You will review AI-generated biology content and trainer/QA work,...

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,...

Research Coordinator I – RADIS Lab AI Research Program RADIS Lab & Neurovascular Research | St. Michael's Hospital About the Lab The RADIS lab at St. Michael's Hospital is a global leader in Endovascular Neurosurgery, applying cutting-edge technology, including robotics, artificial intelligence, and international clinical trials, to vascular brain disease....

What if your knowledge French languagecould help improve the AI. WHAT YOU'LL DO Review, evaluate, and validate AI-generated content and data according to project guidelines. Compare AI-generated outputs and identify the most accurate, relevant, or high-quality result. Identify errors, inconsistencies, omissions, and quality...

Senior Applied Scientist, Document Understanding New Position: This position is open due to an existing vacancy to support our evolving business needs. This applied science position focuses on designing, building, and deploying production-grade document understanding systems that power Westlaw, PracticalLaw, and CoCounsel. You will work across semantic...

What if your knowledge Latvian languagecould help improve the AI. WHAT YOU'LL DO Review, evaluate, and validate AI-generated content and data according to project guidelines. Compare AI-generated outputs and identify the most accurate, relevant, or high-quality result. Identify errors, inconsistencies, omissions, and quality...

Mercor is hiring experienced Musicians to evaluate generative musical AI models in partnership with a leading AI lab. You will assess model outputs across in different categories of music in your bilingual language. Key Responsibilities Evaluate AI model output lyrics, voice generation, and other standards Score quality of musical training data ...

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...

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...