Chiedozie Ndubuilo

Key Skills

Software

Appen

Mindrift

OneForma

Top Subject Matter

No subject matter listed

Top Data Types

3D Sensor

Audio

Image

Text

Top Label Types

Classification

Evaluation Rating

Fine Tuning

Segmentation

Transcription

Translation Localization

Freelancer Overview

I am a detail-oriented data annotation professional with 5 years of experience supporting machine learning projects across text, image, and audio datasets. My expertise includes delivering accurate labels, ensuring data quality and consistency, and collaborating closely with AI engineers and project managers to meet evolving requirements. I have worked with leading platforms such as Fizo Global Services, Appen, and Oneforma, where I handled tasks like speaker identification, emotional tone detection, and structured feedback to improve AI system outputs. My strong analytical thinking, attention to detail, and commitment to ethical AI ensure I consistently deliver high-quality training data while meeting productivity targets and deadlines. Fluent in both English and Igbo, I thrive in fast-paced environments and am dedicated to contributing to reliable and effective AI solutions.

Labeling Experience

Lighthouse

OneformaTextSegmentationClassification

Worked on a high-volume AI training project involving text labeling and evaluation. Performed Preference Ranking (PR) to determine the best AI-generated responses based on specific linguistic and safety criteria. Tasks included identifying hallucinations, fact-checking, and categorizing intent. Adhered to strict quality measures and passed multiple certifications to ensure data integrity for the development of global AI models.

Worked on a high-volume AI training project involving text labeling and evaluation. Performed Preference Ranking (PR) to determine the best AI-generated responses based on specific linguistic and safety criteria. Tasks included identifying hallucinations, fact-checking, and categorizing intent. Adhered to strict quality measures and passed multiple certifications to ensure data integrity for the development of global AI models.

2025

Polly

OneformaAudioTranscription

Participated in a large-scale AI data annotation project focused on speech recognition model training. Performed detailed audio review and transcription correction, ensuring alignment between spoken content and machine-generated text. Applied quality control standards, linguistic accuracy checks, and formatting guidelines to maintain high precision rates. Supported the development and optimization of ASR and NLP systems.

Participated in a large-scale AI data annotation project focused on speech recognition model training. Performed detailed audio review and transcription correction, ensuring alignment between spoken content and machine-generated text. Applied quality control standards, linguistic accuracy checks, and formatting guidelines to maintain high precision rates. Supported the development and optimization of ASR and NLP systems.

2025 - 2025

Education

Work History