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Freelancer Overview
No 1 upper college road Ijanikin lagos (+234)8135950582 [email protected] linkedin.com/in/ebube-ezenwa-7572a9252 Ezenwa Ebube Summary Data Annotation & Quality Assurance Expert with over 2 years of experience in AI training, linguistic analysis and AI model evaluation . Proven track record in improving machine learning algorithms for global platforms like Scale AI and Appen. Expert in evaluating AI responses for safety, helpfulness, and factuality while maintaining a 95% Job Success Score in high-stakes freelance environments. Skills Quality Assurance & Data Validation Content & Video Data collection Data collection & User Studies Support Language Quality Analysis Research & Content Evaluation Independent Remote Work Time & Task Management Interest In AI & Robotics EXPERIENCE — Scale AI | AI Training Specialist / QA Lead | January 2022 – March 2025 • Annotated & Labeled: Curated high-quality datasets for LLMs, including text categorization, image tagging, and document collection. • Quality Assurance: Conducted meticulous audits of peer submissions to ensure 100% alignment with complex project guidelines and safety protocols. • RLHF Ranking: Evaluated and ranked AI-generated responses based on factuality and helpfulness to refine model performance. Crowdgen by Appen | Data Annotator / QA Expert | December 2020 – January 2025 • Search Evaluation: Performed pairwise search engine result evaluations to identify superior options and improve algorithms. • E-comme