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Okpara Chinonso

Okpara Chinonso

Data Annotation Specialist

Nigeria flagLagos, Nigeria
$15.00/hrEntry LevelOtherMindriftCVAT

Key Skills

Software

Other
MindriftMindrift
CVATCVAT

Top Subject Matter

AI-generated Images
AI Training Data Evaluation
Data Annotation & Quality Assurance

Top Data Types

ImageImage
Computer Code ProgrammingComputer Code Programming
TextText
DocumentDocument

Top Task Types

Classification
Data Collection
Object Detection
Evaluation Rating

Freelancer Overview

I have hands-on experience in AI training data and data labeling through my role as a Data Annotation Specialist at RWS International. In this role, I worked extensively on annotating and evaluating AI-generated images, ensuring they met strict quality and compliance standards. I classified visual content based on detailed project-specific criteria, consistently applying annotation guidelines and decision rules to maintain high levels of accuracy and consistency. I also handled edge cases, using sound judgment to resolve ambiguous scenarios and improve overall data quality. What sets me apart is my ability to quickly adapt to evolving annotation guidelines and workflows while maintaining strong productivity and accuracy benchmarks. I am highly detail-oriented and comfortable working with web-based annotation tools, which enables me to deliver reliable, high-quality labeled data for AI model training. My experience has strengthened my analytical thinking, consistency in decision-making, and ability to work efficiently in fast-paced, guideline-driven environments.

Entry LevelEnglishIgbo

Labeling Experience

Data Annotation Specialist

OtherImageClassification
I annotated and evaluated AI-generated images by adhering to defined quality and compliance guidelines. I classified visual content as acceptable or non-acceptable according to specific project criteria. I ensured consistency and accuracy by following detailed task instructions and established annotation standards. • Maintained high annotation quality while meeting productivity and accuracy benchmarks. • Reviewed edge cases and applied judgment in ambiguous scenarios to ensure correct labeling. • Adapted quickly to changing task guidelines and workflows. • Performed annotation tasks using web-based annotation tools and interfaces.

I annotated and evaluated AI-generated images by adhering to defined quality and compliance guidelines. I classified visual content as acceptable or non-acceptable according to specific project criteria. I ensured consistency and accuracy by following detailed task instructions and established annotation standards. • Maintained high annotation quality while meeting productivity and accuracy benchmarks. • Reviewed edge cases and applied judgment in ambiguous scenarios to ensure correct labeling. • Adapted quickly to changing task guidelines and workflows. • Performed annotation tasks using web-based annotation tools and interfaces.

2025 - 2025

Education

I

Imo State Polytechnic, Umuagwo

Higher National Diploma, Computer Science

Higher National Diploma
2019 - 2019
I

Imo State Polytechnic, Umuagwo

National Diploma, Computer Science

National Diploma
2016 - 2016

Work History

1

10Alytics

Data Engineer

Lagos
2025 - Present
H

Huawei Technologies

Tools Automation Engineer

Lagos
2023 - 2025