I’m a motivated AI trainer and content evaluator with hands-on experience in data annotation, model testing, and quality review for text, image, and voice-based systems. With a background in Computer Science and a strong command of English, I focus on accuracy, clarity, and ethical AI development. Passionate about technology and continuous learning, I aim to contribute to projects that make artificial intelligence smarter and more human-centered.

John Gakuru Maina

I’m a motivated AI trainer and content evaluator with hands-on experience in data annotation, model testing, and quality review for text, image, and voice-based systems. With a background in Computer Science and a strong command of English, I focus on accuracy, clarity, and ethical AI development. Passionate about technology and continuous learning, I aim to contribute to projects that make artificial intelligence smarter and more human-centered.

Available to hire

I’m a motivated AI trainer and content evaluator with hands-on experience in data annotation, model testing, and quality review for text, image, and voice-based systems. With a background in Computer Science and a strong command of English, I focus on accuracy, clarity, and ethical AI development. Passionate about technology and continuous learning, I aim to contribute to projects that make artificial intelligence smarter and more human-centered.

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Language

English
Fluent
Swahili
Fluent

Work Experience

Freelance AI Trainer and Evaluator at Remote
January 1, 2023 - November 6, 2025
Annotate and review data sets including text, audio, and images used to train AI models. Evaluate AI-generated outputs for accuracy, tone, and quality. Participate in rating, categorization, and content moderation tasks. Test and provide feedback on model responses to improve natural understanding.
English Tutor and Content Reviewer at Nairobi, Kenya
December 31, 2023 - December 31, 2023
Taught English communication and writing skills to students online. Reviewed and corrected written content for grammar, coherence, and readability. Built strong communication and teaching experience that supports AI language evaluation work.

Education

Diploma in Computer Science at University of Nairobi
January 1, 2020 - December 31, 2023
KCSE (Kenya Certificate of Secondary Education) at Murang’a High School
January 1, 2019 - December 31, 2019
KCPE (Kenya Certificate of Primary Education) at Kamandio Primary School
January 1, 2014 - December 31, 2014

Qualifications

Certificate in Computer Applications
January 11, 2015 - November 6, 2016
Certificate in Data Annotation and AI Fundamentals – Coursera
January 1, 2022 - November 6, 2024
Certificate in English Language Evaluation and Prompt Review – Online
January 1, 2025 - November 6, 2025
Trained in AI Ethics, Responsible Data Handling, and Remote Work Collaboration
January 11, 2020 - November 6, 2024

Industry Experience

Education, Software & Internet, Professional Services, Computers & Electronics, Media & Entertainment