Richard M.

Key Skills

Software

Labelbox

CVAT

Scale AI

Appen

Remotasks

Top Subject Matter

AI training dataset annotation (computer vision, NLP, and speech)

Top Data Types

Image

Video

Text

Audio

Top Task Types

Bounding Box

Segmentation

Classification

Transcription

Emotion Recognition

Freelancer Overview

AI Data Trainer / Data Annotation Specialist — Dzona Tech (Nairobi, Kenya). Core strengths include Labelbox, CVAT, and Scale AI. Education includes N/A, University of Nairobi (2000). AI-training focus includes data types such as Image, Video, and Text and labeling workflows including Bounding Box, Segmentation, and Classification.

Labeling Experience

AI Data Trainer / Data Annotation Specialist — Dzona Tech (Nairobi, Kenya)

LabelboxImageBounding BoxSegmentation

Provided high-accuracy labeling for large AI/ML datasets across images, text, audio, and video using project specifications. Reviewed AI model outputs and corrected inaccurate predictions to support ongoing AI training. Performed NLP tasks including sentiment analysis, text categorization, and content moderation to improve model performance. • Applied bounding boxes and segmentation techniques for computer vision training data • Tagged conversational intents and evaluated chatbot responses for accuracy, tone, and relevance • Transcribed and labeled audio for speech recognition, including quality review and categorization • Conducted data validation and quality assurance checks to ensure datasets met client guidelines

2010 - 2025

Education

Work History