Tetiana Kharchuk

Detail-oriented AI Data Specialist and QA Reviewer with 3+ years of experience in AI data operations, annotation, transcription, and Large Language Model (LLM) evaluation. Skilled in response quality assessment, prompt evaluation, fact-checking, and quality assurance processes. Experienced in applying detailed guidelines and maintaining high accuracy standards across AI training workflows. Strong analytical mindset supported by a Master's degree in Engineering.

AI Data Specialist | AI Trainer | QA Reviewer - Freelance / Contract

(2023-01)

• Evaluated and ranked Large Language Model (LLM) responses in Ukrainian, assessing factual accuracy, reasoning quality, helpfulness, and linguistic fluency.
• Performed quality assurance reviews to ensure consistency and accuracy across AI datasets.
• Conducted prompt testing and response evaluation for generative AI systems.
• Annotated and labeled image and video datasets according to detailed project guidelines.
• Applied ground truth verification methods to maintain high-quality training data.
• Completed Russian-language audio transcription tasks while preserving formatting and linguistic accuracy.
• Collaborated with QA teams to minimize annotation errors and maintain dataset integrity.
• Demonstrated strong adaptability across multiple AI projects and workflows.

Master's Degree - Engineering / Technical Sciences - Vinnytsia National Technical University (VNTU) (2011)