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Ruth Mangisa

Ruth Mangisa

Audio and Video AI Trainer

MALAWI flag
Blantyre, Malawi
$15.00/hrIntermediateMercorOneformaInternal Proprietary Tooling

Key Skills

Software

MercorMercor
OneFormaOneForma
Internal/Proprietary Tooling

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
VideoVideo

Top Label Types

Text Generation
Action Recognition
Transcription

Freelancer Overview

I am an experienced data professional with a strong background in data labeling, annotation, and AI training data across audio, video, and text domains. With over four years working in research data management and hands-on roles in AI content annotation, I have developed expertise in audio/video transcription, captioning, image tagging, and model evaluation for global technology platforms. My technical skills include SQL, JavaScript, PHP, and cloud platforms like AWS and Salesforce, and I am proficient in using tools such as REDCap, ODK, and specialized annotation software. I have successfully managed projects in medical research, supported AI model alignment, and delivered high-quality datasets by ensuring accuracy, clarity, and adherence to strict guidelines. I am committed to data quality, process optimization, and effective collaboration with multidisciplinary teams to support data-driven decision-making and the development of robust AI systems.

IntermediateEnglish

Labeling Experience

Video Captioning

Internal Proprietary ToolingVideoText GenerationAction Recognition
Produced detailed and accurate captions and descriptions for diverse video and audio content to support AI training and content moderation models.

Produced detailed and accurate captions and descriptions for diverse video and audio content to support AI training and content moderation models.

2024 - 2025

Education

B

Blantyre International University

Bachelor of Science, Information Systems

Bachelor of Science
2020 - 2024
U

University of the People

Associate of Science, Computer Science

Associate of Science
2016 - 2018

Work History

T

Training And Research Unit Of Excellence

Clinical Data Officer

Blantyre
2020 - 2023