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O
Onyejiaka C.

Onyejiaka C.

AI Doctor

Nigeria flagLagos, Nigeria

Key Skills

Software

Label StudioLabel Studio
RoboflowRoboflow
LabelboxLabelbox

Top Subject Matter

Content Moderation
Sentiment Analysis
Customer Support Ticket Tagging

Top Data Types

TextText

Top Task Types

Question AnsweringQuestion Answering
Text SummarizationText Summarization
Evaluation/RatingEvaluation/Rating
Point/Key PointPoint/Key Point

Freelancer Overview

Customer Support Specialist. Brings 10+ years of professional experience across complex professional workflows, research, and quality-focused execution. Education includes Bachelor of Engineering, Federal University of Technology Owerri (2023) and On-Demand IT Skills, Digital Witch Support Community (2024).

Labeling Experience

Data Labeling & AI Training Experience

TextTextEvaluation/RatingEvaluation/Rating

Project Scope AI model training through text data annotation and evaluation to improve language understanding and response quality. Data Labeling Tasks Text classification (sentiment, intent, tone), AI response evaluation, content rewriting, grammar correction, fact-checking, and conversational data annotation. Project Size Large-scale datasets with thousands of text samples processed in batches under tight deadlines. Quality Measures Followed strict guidelines, ensured consistency, maintained high accuracy, performed careful review checks, and ensured clarity and correctness in all labels.

2025 - 2026

Education

D

Digital Witch Support Community

On-Demand IT Skills, On-Demand IT Skills

On-Demand IT Skills
2023 - 2024
F

Federal University of Technology Owerri

Bachelor of Engineering, Polymer and Textile Engineering

Bachelor of Engineering
2017 - 2023

Work History

D

Digital Witch

Customer Support Specialist

Lagos
2023 - Present
S

Solid Rock

Polymer Engineer Intern

Owerri
2023 - 2023