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Sarah Ubogun

Sarah Ubogun

AI Data Trainer & Annotation Specialist

Nigeria flagLagos, Nigeria
$20.00/hrEntry LevelOtherClickworkerData Annotation Tech

Key Skills

Software

Other
ClickworkerClickworker
Data Annotation TechData Annotation Tech
Micro1
OneFormaOneForma

Top Subject Matter

General AI/ML
Legal Services & Contract Review
Regulatory Compliance & Risk Analysis

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

Text GenerationText Generation
Question AnsweringQuestion Answering
RLHFRLHF

Freelancer Overview

AI Data Trainer & Annotation Specialist. Brings years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, Western Delta University (2021). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

Entry LevelEnglish

Labeling Experience

AI Data Trainer & Annotation Specialist

OtherText
As an AI Data Trainer & Annotation Specialist, I applied structured evaluation frameworks to review and deliver high-quality labelled datasets for AI training. I identified patterns, flagged inconsistencies, and ensured labeled outputs meet quality standards through meticulous review. My work required strict adherence to annotation guidelines and benchmarking against accuracy thresholds. • Reviewed and evaluated AI-generated outputs for accuracy and consistency. • Applied annotation and validation processes to textual, image, and structured data. • Used project management and documentation tools for task tracking and structured output delivery. • Recognized for consistently meeting or exceeding productivity and accuracy goals.

As an AI Data Trainer & Annotation Specialist, I applied structured evaluation frameworks to review and deliver high-quality labelled datasets for AI training. I identified patterns, flagged inconsistencies, and ensured labeled outputs meet quality standards through meticulous review. My work required strict adherence to annotation guidelines and benchmarking against accuracy thresholds. • Reviewed and evaluated AI-generated outputs for accuracy and consistency. • Applied annotation and validation processes to textual, image, and structured data. • Used project management and documentation tools for task tracking and structured output delivery. • Recognized for consistently meeting or exceeding productivity and accuracy goals.

2025 - Present

Education

W

Western Delta University

Bachelor of Science, Industrial Chemistry

Bachelor of Science
2017 - 2021

Work History

I

IMHO Fashion Limited

Administrative Assistant / Administrative Manager

Lagos
2025 - Present
C

Century Industrial FZE

Quality Control Lab Technician / Inspector

Lagos
2023 - 2024