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Stephen Nganga

@stephennganga1

AI Trainer and Evaluator for AI training projects, assessing model responses and contributing to prompt writing across science and research.

Kenya
Message

As a Freelance AI Trainer & Evaluator, I completed annotation and labeling tasks across text, STEM, and research domains. I evaluated AI-generated responses for quality, accuracy, and helpfulness, and contributed to prompt writing and response generation.

At the University of Nairobi, I conducted Computer Science research, designed experiments, and wrote academic reports. I also assisted senior researchers with data collection, processing, and visualization, and prepared technical summaries and presentations.

Experience

Work history, roles, and key accomplishments

TI

AI Community Annotator and Quality Evaluator

Telus International

Sep 2024 - Jun 2025 (9 months)

Worked as an AI community annotator and quality evaluator, contributing to AI model training and evaluation.

LA

Data Annotator and Linguistic-Tech Specialist

Lionbridge AI

Jan 2024 - Sep 2024 (8 months)

Worked as a data annotator and linguistic-tech specialist, contributing to AI training and evaluation projects.

ON

AI Data Specialist and QA Associate

OneForma

May 2023 - Jan 2024 (8 months)

Served as an AI data specialist and QA associate, ensuring quality in AI training data and evaluation processes.

Education

Degrees, certifications, and relevant coursework

University of Nairobi logoUN

University of Nairobi

Bachelor of Science, Computer Science

2021 - 2025

Pursued a Bachelor of Science in Computer Science, completing the degree in May 2025.

Tech stack

Software and tools used professionally

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