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Hi, I’m Hillary Osei, a detail-oriented AI data annotator and linguistics tester with hands-on experience in remote data labeling, content moderation, and linguistic QA. I excel at evaluating LLM outputs for relevance, factual accuracy, and alignment with user intent, and I’ve supported model training across tech, education, medicine, and culture. I’m passionate about responsible AI, bias detection, and collaboration with cross-functional teams to deliver high-quality training data and improve AI systems through human-in-the-loop workflows.…Hi, I’m Hillary Osei, a detail-oriented AI data annotator and linguistics tester with hands-on experience in remote data labeling, content moderation, and linguistic QA. I excel at evaluating LLM outputs for relevance, factual accuracy, and alignment with user intent, and I’ve supported model training across tech, education, medicine, and culture. I’m passionate about responsible AI, bias detection, and collaboration with cross-functional teams to deliver high-quality training data and improve AI systems through human-in-the-loop workflows.

Hillary Osei

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Hi, I’m Hillary Osei, a detail-oriented AI data annotator and linguistics tester with hands-on experience in remote data labeling, content moderation, and linguistic QA. I excel at evaluating LLM outputs for relevance, factual accuracy, and alignment with user intent, and I’ve supported model training across tech, education, medicine, and culture. I’m passionate about responsible AI, bias detection, and collaboration with cross-functional teams to deliver high-quality training data and improve AI systems through human-in-the-loop workflows.…Hi, I’m Hillary Osei, a detail-oriented AI data annotator and linguistics tester with hands-on experience in remote data labeling, content moderation, and linguistic QA. I excel at evaluating LLM outputs for relevance, factual accuracy, and alignment with user intent, and I’ve supported model training across tech, education, medicine, and culture. I’m passionate about responsible AI, bias detection, and collaboration with cross-functional teams to deliver high-quality training data and improve AI systems through human-in-the-loop workflows.

Available to hire

Hi, I’m Hillary Osei, a detail-oriented AI data annotator and linguistics tester with hands-on experience in remote data labeling, content moderation, and linguistic QA. I excel at evaluating LLM outputs for relevance, factual accuracy, and alignment with user intent, and I’ve supported model training across tech, education, medicine, and culture. I’m passionate about responsible AI, bias detection, and collaboration with cross-functional teams to deliver high-quality training data and improve AI systems through human-in-the-loop workflows.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Remote AI Data Annotator at WELOCALIZE

May 1, 2023 - November 5, 2025

Evaluate outputs from Large Language Models (LLMs) for relevance, factual accuracy, and alignment with user intent. Conduct search relevance assessments by reviewing AI-generated responses and determining their effectiveness in answering complex user queries. Provide ground truth annotations to improve LLM performance across various domains. Identify biased, misleading, or potentially harmful AI outputs in alignment with client guidelines. Work with proprietary tools to label data, assess model quality, and contribute to AI system improvement via human-in-the-loop workflows.

English Linguistic Tester at WELOCALIZE

March 1, 2024 - March 1, 2024

Labeled and annotated audio and video content for Apple’s voice assistant, supporting AI model training and QA pipelines. Evaluated language data for accuracy, intent alignment, tone, and regional/cultural consistency to enhance NLP model performance. Conducted linguistic QA on AI-generated text and search responses to validate semantic relevance and context accuracy. Flagged problematic content to support Responsible AI and human-in-the-loop evaluation processes. Applied structured annotation guidelines and internal tools to ensure consistent data labeling and high annotation throughput.

Remote Social Media Content Moderator at TELUS International AI Data Solutions

April 1, 2023 - April 1, 2023

Enforced content moderation and platform policies for a major social media networking platform, ensuring ads and user-generated content complied with community standards. Reviewed flagged content for violations involving misinformation, hate speech, explicit material, and borderline policy edge cases. Evaluated advertising content for clarity, quality, and compliance with internal platform rules and regulatory guidance. Used internal policy guidelines and investigative research techniques to assess and categorize sensitive or ambiguous materials. Contributed to Trust & Safety efforts by identifying high-risk content and providing detailed rationale for enforcement decisions. Collaborated with moderation teams to enhance platform safety, reduce harm, and support inclusive user experiences.