Zoey Johnson

Key Skills

Software

Labelbox

Top Subject Matter

Machine Learning Model Training

Natural Language Processing

Computer Vision

Top Data Types

Text

Image

Audio

Document

Top Task Types

Classification

Object Detection

Freelancer Overview

Data Labeling & AI Training Specialist. Brings 1+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox. Education includes Master of Science, University of Nairobi (2025) and Bachelor of Science, University of Nairobi (2023). AI-training focus includes data types such as Text, Image, and Audio and labeling workflows including Classification and Object Detection.

Labeling Experience

AI Text & Chat Dataset Labeling

LabelboxTextClassification

I annotated conversation datasets to train and improve natural language processing (NLP) models. My work included flagging inappropriate responses to enhance dataset quality. I also performed statistical checks to maintain data balance and representativeness. • Tagged intents and entities in chat data • Evaluated response quality for NLP applications • Maintained diversity within text datasets • Improved AI-generated conversation quality

I annotated conversation datasets to train and improve natural language processing (NLP) models. My work included flagging inappropriate responses to enhance dataset quality. I also performed statistical checks to maintain data balance and representativeness. • Tagged intents and entities in chat data • Evaluated response quality for NLP applications • Maintained diversity within text datasets • Improved AI-generated conversation quality

2024 - Present

Data Labeling & AI Training Specialist

LabelboxTextClassification

As a Data Labeling & AI Training Specialist, I annotated and categorized large-scale text datasets according to structured project guidelines. I evaluated AI-generated outputs for relevance and consistency to ensure high-quality training data. I worked closely with project teams to enhance labeling workflows and guidelines. • Tagged and classified text entries to support AI model training • Evaluated accuracy and tone of AI outputs • Maintained precision processing high data volumes • Collaborated on refining project guidelines

As a Data Labeling & AI Training Specialist, I annotated and categorized large-scale text datasets according to structured project guidelines. I evaluated AI-generated outputs for relevance and consistency to ensure high-quality training data. I worked closely with project teams to enhance labeling workflows and guidelines. • Tagged and classified text entries to support AI model training • Evaluated accuracy and tone of AI outputs • Maintained precision processing high data volumes • Collaborated on refining project guidelines

2024 - Present

Audio Annotation Projects

LabelboxAudioClassification

I was involved in annotating audio clips with metadata to support speech recognition accuracy in machine learning models. Each clip received multiple tags to assist downstream AI tasks. This required attention to detail and consistency in annotation standards. • Applied metadata tags for audio classification • Maintained standards for labeling audio data • Enhanced voice recognition system training • Balanced large annotation workloads efficiently

I was involved in annotating audio clips with metadata to support speech recognition accuracy in machine learning models. Each clip received multiple tags to assist downstream AI tasks. This required attention to detail and consistency in annotation standards. • Applied metadata tags for audio classification • Maintained standards for labeling audio data • Enhanced voice recognition system training • Balanced large annotation workloads efficiently

2023 - 2023

Image Annotation Projects

LabelboxImageObject Detection

On multiple projects, I annotated image datasets identifying objects and features for model training. My labeling supported object detection and visual recognition tasks. Consistency in image labeling was critical for successful AI applications. • Drew bounding boxes around target objects • Ensured label accuracy across large datasets • Adhered to strict annotation protocols • Supported visual recognition and detection models

On multiple projects, I annotated image datasets identifying objects and features for model training. My labeling supported object detection and visual recognition tasks. Consistency in image labeling was critical for successful AI applications. • Drew bounding boxes around target objects • Ensured label accuracy across large datasets • Adhered to strict annotation protocols • Supported visual recognition and detection models

2023 - 2023

Data Annotation & Quality Assurance Intern

LabelboxTextClassification

As a Data Annotation & Quality Assurance Intern, I classified and labeled datasets involving text, audio, and images to support machine learning initiatives. I ensured all labeled data met rigorous quality standards and worked on documentation to improve guideline clarity. Consistency and accuracy were essential in all annotation tasks. • Performed error detection and data verification • Documented discrepancies in annotation • Contributed to multiple AI model training cycles • Suggested improvements for annotation guidelines

As a Data Annotation & Quality Assurance Intern, I classified and labeled datasets involving text, audio, and images to support machine learning initiatives. I ensured all labeled data met rigorous quality standards and worked on documentation to improve guideline clarity. Consistency and accuracy were essential in all annotation tasks. • Performed error detection and data verification • Documented discrepancies in annotation • Contributed to multiple AI model training cycles • Suggested improvements for annotation guidelines

2023 - 2023

Education

Work History