Kelvin Kitonga

I am a results-driven data analyst and AI data annotator with over three years of hands-on experience improving data quality and model performance. I combine analytical rigor, linguistic precision, and practical tooling to support LLM training and production-ready datasets.

Currently, I work as a Data Service Specialist at RWS Group, where I perform annotation, prompt evaluation, and reinforcement learning from human feedback to improve model alignment, tone, and factual integrity. I also review and rate AI outputs for clarity, safety, and cultural appropriateness.

In parallel roles I have built Power BI dashboards, automated workflows using Python and SQL, and reduced costs and manual effort through data-driven solutions—a notable result being an 18% cost reduction from inventory and supplier automation and a 15% improvement in academic performance via dashboard insights.

I hold a BSc in Business & Information Technology and certifications including the Google Data Analytics Certificate and Microsoft Certified: Power BI Data Analyst Associate. I emphasize accuracy, ethical data handling, clear data storytelling, and continuous learning in every engagement.