Joan Njoroge

Key Skills

Software

CloudFactory

Sama

Top Subject Matter

Machine Learning Data Preparation

AI Training Data & Validation

Top Data Types

Text

Image

Top Task Types

Classification

Freelancer Overview

Data Annotation & Labeling Associate. Brings 4+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CloudFactory and Sama. Education includes Bachelor of Arts, St. Paul’s University (2025). AI-training focus includes data types such as Text and labeling workflows including Classification.

Labeling Experience

Data Annotation & Labeling Associate

CloudfactoryTextClassification

As a Data Annotation & Labeling Associate at CloudFactory Kenya, I annotated text and image datasets to train machine learning models. My focus was ensuring accuracy and consistency according to detailed labeling guidelines. I also participated in peer review processes and performed quality assurance tasks. • Consistently maintained high labeling accuracy above 97%. • Annotated datasets for sentiment analysis and NLP classification tasks. • Contributed to object detection tasks using image annotation tools. • Utilized platforms like Labelbox and CVAT for efficient workflow.

As a Data Annotation & Labeling Associate at CloudFactory Kenya, I annotated text and image datasets to train machine learning models. My focus was ensuring accuracy and consistency according to detailed labeling guidelines. I also participated in peer review processes and performed quality assurance tasks. • Consistently maintained high labeling accuracy above 97%. • Annotated datasets for sentiment analysis and NLP classification tasks. • Contributed to object detection tasks using image annotation tools. • Utilized platforms like Labelbox and CVAT for efficient workflow.

2024 - Present

AI Data Entry & Validation Assistant

SamaTextClassification

In my role as AI Data Entry & Validation Assistant at Sama, I labeled both structured and unstructured data for AI model training. I performed comprehensive data cleaning and validation to support high-quality datasets. Datasets were categorized and tagged based on strict standards. • Maintained confidentiality and data security at all times. • Validated data accuracy for various AI applications including NLP. • Utilized Sama’s proprietary annotation tools. • Categorized text and image data for enhanced machine learning outcomes.

In my role as AI Data Entry & Validation Assistant at Sama, I labeled both structured and unstructured data for AI model training. I performed comprehensive data cleaning and validation to support high-quality datasets. Datasets were categorized and tagged based on strict standards. • Maintained confidentiality and data security at all times. • Validated data accuracy for various AI applications including NLP. • Utilized Sama’s proprietary annotation tools. • Categorized text and image data for enhanced machine learning outcomes.

2023 - 2024

Education

Work History