Donard Nzioki Mumo

Key Skills

Software

Labelbox

Remotasks

Top Subject Matter

No subject matter listed

Top Data Types

Image

Text

Top Label Types

Bounding Box

RLHF

Freelancer Overview

Detail-oriented Data Labeling and Chatbot Training Specialist with experience annotating, categorizing, and validating datasets for machine learning, AI, and conversational AI applications. Skilled in working with image, text, and audio data while maintaining high standards of quality control, data integrity, and confidentiality. Experienced in training and evaluating chatbot models through response ranking, intent classification, and reinforcement learning from human feedback (RLHF). Adept at improving conversational AI performance through careful analysis, structured evaluation, and continuous optimization.

Labeling Experience

Chatbot Training & Evaluation Project

RemotasksTextRLHF

I trained and evaluated conversational AI models by ranking chatbot responses and providing structured reinforcement learning from human feedback (RLHF). My work included identifying intents, classifying conversations, and improving chatbot safety and relevance. This role required prompt evaluation and detailed tagging to optimize model performance. • Ranked and rated chatbot responses for conversational AI. • Applied RLHF methods for model improvement. • Identified and flagged harmful outputs in dialog data. • Collaborated to refine annotation guidelines and quality.

I trained and evaluated conversational AI models by ranking chatbot responses and providing structured reinforcement learning from human feedback (RLHF). My work included identifying intents, classifying conversations, and improving chatbot safety and relevance. This role required prompt evaluation and detailed tagging to optimize model performance. • Ranked and rated chatbot responses for conversational AI. • Applied RLHF methods for model improvement. • Identified and flagged harmful outputs in dialog data. • Collaborated to refine annotation guidelines and quality.

2020 - 2024

Data Labeling & Chatbot Training Specialist

LabelboxImageBounding Box

I annotated and labeled large-scale image datasets using bounding boxes and polygon tools to support computer vision model training. My responsibilities included quality checking, reviewing peer annotations, and collaborating with AI engineers to refine guidelines. I delivered a high volume of precise annotations and maintained strong confidentiality standards. • Labeled 20,000+ images for object detection. • Corrected and validated peer-submitted image annotations. • Used Labelbox, CVAT, and SuperAnnotate extensively. • Ensured compliance with data security protocols.

I annotated and labeled large-scale image datasets using bounding boxes and polygon tools to support computer vision model training. My responsibilities included quality checking, reviewing peer annotations, and collaborating with AI engineers to refine guidelines. I delivered a high volume of precise annotations and maintained strong confidentiality standards. • Labeled 20,000+ images for object detection. • Corrected and validated peer-submitted image annotations. • Used Labelbox, CVAT, and SuperAnnotate extensively. • Ensured compliance with data security protocols.

2020 - 2024

Education

Work History