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Mubarak Abubakr

Mubarak Abubakr

AI Trainer - Data Annotation & Quality Assurance

NIGERIA flag
Ilorin, Nigeria
$30.00/hrIntermediateClickworker

Key Skills

Software

ClickworkerClickworker

Top Subject Matter

No subject matter listed

Top Data Types

ImageImage

Top Label Types

Emotion Recognition
Prompt Response Writing SFT

Freelancer Overview

I am an experienced AI Trainer and Data Annotation Specialist with a strong background in labeling and evaluating both text and image datasets to support machine learning projects. My work involves ensuring precise classification, segmentation, and tagging, as well as identifying and correcting errors in AI-generated outputs to improve model quality. I am skilled in using platforms like uTest and Atlas Capture, and I consistently follow complex annotation guidelines to deliver high-quality, consistent data. My technical expertise in software development, API integration, and structured data validation enables me to efficiently manage annotation workflows and quality assurance processes. I have contributed to projects in domains such as NLP, e-commerce, and AI-powered web applications, applying attention to detail and instruction compliance to maintain high accuracy across all tasks.

IntermediateEnglishYoruba

Labeling Experience

Clickworker

AI Data Annotation & AI Output Evaluation Specialist (Text & Image)

ClickworkerImageEmotion RecognitionPrompt Response Writing SFT
Worked as an AI Trainer and Data Annotation Specialist on freelance and platform-based projects focused on improving machine learning model performance across text and image datasets. Performed high-volume data labeling tasks including Text classification (intent, sentiment, topic labeling) Named Entity Recognition (NER) and entity tagging Evaluation and correction of AI-generated responses Summarization quality assessmen Emotion and tone detection Image classification and structured tagging

Worked as an AI Trainer and Data Annotation Specialist on freelance and platform-based projects focused on improving machine learning model performance across text and image datasets. Performed high-volume data labeling tasks including Text classification (intent, sentiment, topic labeling) Named Entity Recognition (NER) and entity tagging Evaluation and correction of AI-generated responses Summarization quality assessmen Emotion and tone detection Image classification and structured tagging

2024 - 2025

Education

A

ALX Africa

Certificate, Artificial Intelligence

Certificate
2025 - 2025
A

Al-Hikmah University

Postgraduate Diploma, Computer Science

Postgraduate Diploma
2025 - 2025

Work History

S

SheClusive Africa

Frontend Developer

Lagos
2025 - 2026
P

People Advisor

Frontend Developer (Contract)

Ibadan
2025 - 2025