Oluwasegun A.

Key Skills

Software

Mindrift

Mercor

Appen

Clickworker

Top Subject Matter

video annotator

video labeler

auditor

Top Data Types

Text

Document

Video

Top Task Types

Text Summarization

RLHF

Segmentation

Object Detection

Freelancer Overview

Experienced Data Labeler and AI Training Data Specialist with over two years of hands-on expertise in creating high-quality labeled datasets for large language models and computer vision projects. Proficient in annotation tools such as LabelStudio, Scale AI, Appen, and custom internal platforms, I have contributed to training data pipelines that improved model accuracy, safety, and reasoning capabilities. My work includes complex tasks such as instruction-following evaluation, preference ranking (RLHF/RLAIF), entity recognition, sentiment analysis with nuance, summarization quality assessment, and multimodal data labeling (text + image).

Labeling Experience

Video annotator/ Video labeler

VideoSegmentation

video labeling for training of AI.

2025 - Present

Education

Work History