Ezra Wambua

Key Skills

Software

Labelbox

Top Subject Matter

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Top Data Types

Text

Top Label Types

Text Summarization

Freelancer Overview

I am a detail-oriented AI trainer and data annotation specialist with hands-on experience labeling both structured and unstructured datasets, including text, images, and conversational AI outputs. At Safaricom PLC, I contributed to the development of AI models by annotating data for natural language processing (NLP) and evaluating AI-generated content for customer service chatbots, ensuring high accuracy and adherence to project guidelines. My technical skills include text classification, sentiment analysis, image and bounding box annotation, prompt evaluation, and providing feedback for large language models. I am proficient with Python, Excel, and Google Sheets for data cleaning and quality assurance. I excel at following complex guidelines, maintaining consistency, and working independently in remote environments. My background in computer science, along with project experience in AI model evaluation and data labeling simulations, has given me a strong foundation in research, quality control, and fact verification.

Labeling Experience

AI Data Annotation Specialist

LabelboxTextText Summarization

I contribute to the development of AI models by annotating text and image datasets, performing tasks such as sentiment analysis, entity recognition, and object detection using Labelbox. I ensure high-quality standards are maintained through detailed guidelines and thorough quality control checks, handling large-scale datasets for customer service AI solutions.

I contribute to the development of AI models by annotating text and image datasets, performing tasks such as sentiment analysis, entity recognition, and object detection using Labelbox. I ensure high-quality standards are maintained through detailed guidelines and thorough quality control checks, handling large-scale datasets for customer service AI solutions.

2025

Education

Work History