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John Ngari

John Ngari

Monitoring and Evaluation Officer

KENYA flag
Limuru, Kenya
$10.00/hrIntermediateClickworkerTolokaV7 Labs

Key Skills

Software

ClickworkerClickworker
TolokaToloka
V7 LabsV7 Labs
SuperAnnotateSuperAnnotate
HiveMindHiveMind
CVATCVAT

Top Subject Matter

Nonprofit & Social Impact – Data review, monitoring and evaluation insights, and research-based annotation tasks.
Education & E-Learning – Educational content classification, curriculum-related datasets, and knowledge-based training data.
Artificial Intelligence & Machine Learning – AI training data labeling, text classification, and NLP annotation.

Top Data Types

Computer Code ProgrammingComputer Code Programming
TextText
AudioAudio

Top Label Types

Classification
Segmentation

Freelancer Overview

Monitoring and Evaluation Officer with 4+ years of professional experience managing complex workflows, conducting research, and ensuring quality-driven execution of projects. Skilled in data organisation, analysis, and reporting, with growing experience in AI data training, data labeling, and content evaluation. Adept at working with digital platforms, following detailed guidelines, and delivering accurate, high-quality outputs in remote environments. Educational background includes a Bachelor of Arts from The Catholic University of Eastern Africa (2023) and a Bachelor of Arts from The Management University of Africa (2022). Brings strong analytical thinking, attention to detail, and a commitment to continuous learning—skills that translate well into AI training and data annotation work.

IntermediateSwahiliLatinGreekEnglish

Labeling Experience

AI Data Annotation for Natural Language Processing

TextEntity Ner Classification
Worked on AI training projects involving large-scale text data annotation for natural language processing models. Tasks included text classification, sentiment labeling, entity tagging, and intent recognition across diverse datasets. Ensured high-quality annotations by following strict labeling guidelines, performing quality checks, and maintaining consistency across thousands of data samples. Collaborated with QA reviewers and adhered to accuracy benchmarks to improve model training performance.

Worked on AI training projects involving large-scale text data annotation for natural language processing models. Tasks included text classification, sentiment labeling, entity tagging, and intent recognition across diverse datasets. Ensured high-quality annotations by following strict labeling guidelines, performing quality checks, and maintaining consistency across thousands of data samples. Collaborated with QA reviewers and adhered to accuracy benchmarks to improve model training performance.

2026 - Present

Text Data Labeling for AI Training

TextClassification
Completed text data labeling tasks for AI model training by categorizing and tagging datasets according to detailed annotation guidelines. Labeled large batches of text samples for classification and intent recognition while maintaining high accuracy and consistency. Performed quality checks to ensure labels met project standards and contributed to improving machine learning dataset reliability.

Completed text data labeling tasks for AI model training by categorizing and tagging datasets according to detailed annotation guidelines. Labeled large batches of text samples for classification and intent recognition while maintaining high accuracy and consistency. Performed quality checks to ensure labels met project standards and contributed to improving machine learning dataset reliability.

2025 - Present

AI Data Labeling for Machine Learning Datasets

TextClassification
Performed data labeling tasks for machine learning datasets by categorizing and tagging large volumes of text data according to predefined annotation guidelines. Responsibilities included identifying key patterns in text, assigning accurate labels, and ensuring consistency across the dataset. Maintained high annotation accuracy through careful review, adherence to quality standards, and following detailed project instructions to support effective AI model training.

Performed data labeling tasks for machine learning datasets by categorizing and tagging large volumes of text data according to predefined annotation guidelines. Responsibilities included identifying key patterns in text, assigning accurate labels, and ensuring consistency across the dataset. Maintained high annotation accuracy through careful review, adherence to quality standards, and following detailed project instructions to support effective AI model training.

2025 - Present

Education

T

The Management University of Africa

Bachelor of Arts, Development Studies (Project Management)

Bachelor of Arts
2019 - 2022
T

The Catholic University of Eastern Africa

Bachelor of Arts, Philosophy

Bachelor of Arts
2023

Work History

L

Limuru Water and Sewerage Company

Monitoring and Evaluation Officer

Limuru
2019 - 2022