Princewill U.

Key Skills

Software

Labelbox

Label Studio

Prodigy

Scale AI

Appen

Remotasks

Top Subject Matter

Cybersecurity & Threat Intelligence

Social Media & Content Moderation

Artificial Intelligence / Machine Learning

Top Data Types

Text

Video

Audio

Top Task Types

Classification

Entity (NER) Classification

Evaluation/Rating

RLHF

Red Teaming

Freelancer Overview

AI Trainer with 3+ years of experience in ML, DL, and NLP. Specialized in LLM training, prompt engineering, dataset creation, data labeling, and annotation. Proven ability to improve model performance through high-quality labeled data and fine-tuning. Designed and deployed a transformer-based conversational AI system leveraging large language models (LLMs) and NLP techniques. In addition, I led data labeling and annotation workflows using structured guidelines to ensure high-quality training datasets and strong inter-annotator agreement and many other projects. I hold a Bachelors of Science degree in Computer Science with a focus in AI and Data Science.

Labeling Experience

Content Moderation / Toxicity Detection

VideoClassification

Specific tasks included text classification, multi-label annotation, and content moderation labeling, where text data was categorized into classes such as toxicity, hate speech, harassment, and safe content. Additional responsibilities included image annotation (bounding boxes and classification), data validation, and quality review of annotated datasets. The project involved handling high-volume datasets (10,000+ data points) across multiple domains, requiring consistency, speed, and attention to detail. Strict quality assurance measures were followed, including adherence to detailed annotation guidelines, maintaining high inter-annotator agreement, participating in review cycles, and consistently achieving >95% annotation accuracy, ensuring reliability and usability of the labeled data for downstream model training and evaluation.

2024 - 2026

Education

Work History