Chinedu Ndunezi

Key Skills

Software

Appen

OneForma

Top Subject Matter

No subject matter listed

Top Data Types

Text

Audio

Top Task Types

Text Generation

Translation Localization

Mapping

Evaluation Rating

Audio Recording

Freelancer Overview

I am a detail-oriented AI data labeler and language specialist with over four years of hands-on experience working with English, Chinese (Mandarin), and French datasets for machine learning and natural language processing projects. In addition to my linguistic expertise, I have developed technical proficiency in programming languages such as Python and SQL, allowing me to contribute to specialized code-based RLHF (Reinforcement Learning from Human Feedback) tasks. I am experienced in auditing AI-generated code for syntax errors, logical consistency, and readability. My core expertise includes text annotation, intent labeling, and sentiment analysis, as well as rigorous quality review of both natural language and programming scripts. I have successfully delivered high-quality, guideline-compliant results on platforms like Outlier AI, Stellar, and OneForma, consistently meeting strict project deadlines. Whether I am analyzing complex Mandarin phrasing or debugging a Python-based model response, I focus on precision and upholding the highest standards of data integrity and confidentiality. I am a quick learner, adaptable to new labeling environments, and committed to helping build more accurate, reliable AI models

Labeling Experience

Freelance Language Annotator, Translator, and Data Labeler

AppenTextText GenerationTranslation Localization

Worked on English and French datasets for AI and machine learning training. Tasks included annotating text for classification, sentiment, intent, and relevance; reviewing transcription and translation; and ensuring quality across large volumes of data. Followed strict project guidelines and maintained high accuracy using web-based annotation dashboards and task management systems.

Worked on English and French datasets for AI and machine learning training. Tasks included annotating text for classification, sentiment, intent, and relevance; reviewing transcription and translation; and ensuring quality across large volumes of data. Followed strict project guidelines and maintained high accuracy using web-based annotation dashboards and task management systems.

2021 - 2025

Transcription and Text Review Specialist

OneformaAudioTranslation LocalizationMapping

Transcribed audio and video content into clear, structured text. Reviewed annotated and transcribed data to identify errors, inconsistencies, and guideline violations. Applied feedback from quality audits to improve accuracy while maintaining confidentiality and handling sensitive content responsibly. Completed tasks using web-based annotation dashboards and transcription tools.

Transcribed audio and video content into clear, structured text. Reviewed annotated and transcribed data to identify errors, inconsistencies, and guideline violations. Applied feedback from quality audits to improve accuracy while maintaining confidentiality and handling sensitive content responsibly. Completed tasks using web-based annotation dashboards and transcription tools.

2020 - 2021

Education

Work History