Mercy Augustine

Key Skills

Software

CVAT

Labelbox

Prodigy

Top Subject Matter

Natural Language Processing and Computer Vision

Data Annotation for AI Training

Top Data Types

Image

Text

Top Task Types

Classification

Transcription

Freelancer Overview

Senior Data Annotation Specialist. Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT, Labelbox, and Prodigy. Education includes Bachelor of Science, University of Manchester (2019). AI-training focus includes data types such as Text and labeling workflows including Classification.

Labeling Experience

Senior Data Annotation Specialist

CVATTextClassification

Led the annotation and quality assurance of a wide array of NLP and computer vision datasets. Focused on developing annotation guidelines, reducing error rates, and improving model accuracy by 25%. Delivered thorough multilingual transcription and translation services for AI training. • Oversaw a team of annotators ensuring output consistency. • Developed comprehensive quality control practices for all data types. • Authored documentation and instructions for multilingual projects. • Collaborated on scaling workflows for efficient annotation.

Led the annotation and quality assurance of a wide array of NLP and computer vision datasets. Focused on developing annotation guidelines, reducing error rates, and improving model accuracy by 25%. Delivered thorough multilingual transcription and translation services for AI training. • Oversaw a team of annotators ensuring output consistency. • Developed comprehensive quality control practices for all data types. • Authored documentation and instructions for multilingual projects. • Collaborated on scaling workflows for efficient annotation.

2022 - 2025

Data Annotation Associate

CVATTextClassification

Annotated large-scale text, image, and audio datasets to provide high-quality labeled data for AI development. Performed detailed transcription, interpretation, and copyright writing for dataset documentation. Maintained accuracy rates exceeding 98% and supported pipeline improvements. • Worked with a range of data types including images and audio. • Supported multilingual and multicultural datasets. • Helped optimize annotation workflows for efficiency. • Assisted in creating and editing comprehensive documentation.

Annotated large-scale text, image, and audio datasets to provide high-quality labeled data for AI development. Performed detailed transcription, interpretation, and copyright writing for dataset documentation. Maintained accuracy rates exceeding 98% and supported pipeline improvements. • Worked with a range of data types including images and audio. • Supported multilingual and multicultural datasets. • Helped optimize annotation workflows for efficiency. • Assisted in creating and editing comprehensive documentation.

2020 - 2022

Education

Work History