Echezonachukwu O.

Key Skills

Freelancer Overview

OKONKWO ECHEZONACHUKWU AI Trainer | Data Annotator | Healthcare Management Graduate 📞 08165521243 ✉ [email protected] CAREER OBJECTIVE Results-driven and detail-oriented professional with a background in Healthcare Management and hands-on experience in AI training, data annotation, and digital content creation. Seeking to leverage my expertise in AI platform development and human-in-the-loop training workflows to contribute meaningfully to cutting-edge artificial intelligence projects. Committed to improving AI model accuracy, data quality, and user-centric design through disciplined annotation, creative instruction, and cross-functional collaboration. EDUCATION Bachelor of Science — Healthcare Management Global Wealth University, Lomé, Togo • 2021 – 2025 WORK EXPERIENCE AI Trainer / Prompt Engineer Freelance / Remote AI Platforms • 2023 – Present Designed and refined prompts for large language models (LLMs) to improve response accuracy, tone, and relevance across diverse use cases. Evaluated AI-generated outputs using established rubrics, providing structured feedback to enhance model alignment and safety. Collaborated with platform teams to identify edge cases, bias patterns, and knowledge gaps in AI training datasets. Contributed to RLHF (Reinforcement Learning from Human Feedback) pipelines by rating, ranking, and rewriting model responses. Tested chatbot workflows and flagged errors in reasoning, factual accuracy, and instruction-following behavio