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Maduagwu Gibunna

Maduagwu Gibunna

Voice Actor - AI Audio Training

NIGERIA flag
port harcourt, Nigeria
$15.00/hrExpertAppen

Key Skills

Software

AppenAppen

Top Subject Matter

No subject matter listed

Top Data Types

ImageImage
TextText
VideoVideo

Top Label Types

Action Recognition
Text Summarization
Evaluation Rating
Data Collection
Audio Recording

Freelancer Overview

I am a detail-oriented professional with hands-on experience in AI data annotation and training data contribution, particularly through my work with Appen. My background in computer science and formal training in data analysis have equipped me to follow complex guidelines, maintain high accuracy, and ensure data quality across large-scale projects. I excel at analyzing tone, context, and subtext in both text and audio, which has enabled me to deliver high-quality, nuanced data for AI models in natural language processing and audio domains. My experience managing content production and quality evaluation, alongside my ability to adapt to different project requirements, makes me well-suited for roles focused on data labeling, annotation, and AI training pipelines.

ExpertEnglishGerman

Labeling Experience

Appen

AI Data Annotation & Content Evaluation — Visual & Text Media

AppenImageAction RecognitionText Summarization
Analyzed and labeled visual content including images, memes, and social media posts to support AI model training pipelines. Applied detailed annotation guidelines consistently across large volumes of diverse content types, maintaining high accuracy and quality scores. Identified cultural references, contextual tone, and implied meaning in visual and text-based content for AI comprehension tasks. Performed content quality evaluation and flagging in accordance with established moderation and review standards. Delivered annotations on a self-managed schedule while consistently meeting project deadlines and performance benchmarks.

Analyzed and labeled visual content including images, memes, and social media posts to support AI model training pipelines. Applied detailed annotation guidelines consistently across large volumes of diverse content types, maintaining high accuracy and quality scores. Identified cultural references, contextual tone, and implied meaning in visual and text-based content for AI comprehension tasks. Performed content quality evaluation and flagging in accordance with established moderation and review standards. Delivered annotations on a self-managed schedule while consistently meeting project deadlines and performance benchmarks.

2023 - 2024

Education

C

Cousera

Certificate, Cybersecurity

Certificate
2025 - 2025
N

N/A

Certificate, Data Analysis

Certificate
2023 - 2023

Work History

I

Independent

Freelance Ghost Writer and Content Creator

port harcourt
2022 - Present