AI Trainer Jobs in Canada

Rex.zone; Canada; Remote; CAD 56,714 - 94,524; Part time

Job summary

A tech company specializing in AI is seeking an AI Trainer based in Canada. The role involves improving large language models through RLHF-style evaluations, prompt evaluation, and data labeling. Candidates should have experience with structured evaluation, strong writing skills, and familiarity with AI evaluation workflows. This position offers an hourly pay range of $30 to $50. Apply by highlighting your relevant experience and compliance with annotation guidelines.

Qualifications

• Experience with structured evaluation and guideline-driven judgment.
• Strong writing skills for documenting rationales and edge-case notes.
• Comfort with data labeling and QA evaluation processes.

Responsibilities

• Perform RLHF evaluations and write clear rationales.
• Execute prompt evaluations focusing on instruction-following and safety.
• Document edge cases and build error taxonomies.

Skills

Structured evaluation

Strong writing

Familiarity with RLHF and LLM evaluation

Data labeling

Multilingual evaluation

Job description

About The Role

AI Trainer jobs in Canada focus on improving large language models through RLHF-style evaluations, prompt evaluation, data labeling, and QA evaluation across real AI/ML training pipelines. You will follow detailed annotation guidelines, verify training data quality, and provide structured feedback that improves helpfulness, correctness, and safety.

What You’ll Do

• Perform RLHF evaluations (pairwise ranking, rubric-based scoring) and write clear rationales
• Execute prompt evaluation for instruction-following, factuality, and safety
• Label and validate datasets for NLP and content safety labeling
• Run QA evaluation checks (consistency, agreement, systematic error discovery)
• Document edge cases and build error taxonomies to drive model performance improvement
• Collaborate on rubrics, gold sets, calibration, and regression testing for model updates

Skills And Qualifications

• Experience with structured evaluation and guideline-driven judgment
• Strong writing and documentation for rationales and edge-case notes
• Familiarity with RLHF, LLM evaluation, and prompt evaluation workflows
• Comfort with data labeling, QA evaluation, and training data quality processes
• Bonus: multilingual evaluation, NER/classification tasks, or multimodal evaluation

How To Apply

Browse roles on Rex.zone and apply with a resume highlighting RLHF, data labeling, QA evaluation, annotation guidelines compliance, and examples of model evaluation feedback.

Hourly base pay range: $30–$50.