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CHARLES OTIENO

CHARLES OTIENO

Data Annotator | AI Training & Data analyst

Technology / Internet

Nairobi, Nairobi Area

Social

About CHARLES OTIENO:

Detail-oriented Data Annotator with 8+ years of experience in data quality assurance, pattern
recognition, and systematic data validation across financial services, retail, and agriculture
sectors. Proven expertise in creating structured datasets, implementing quality control frameworks,
and ensuring data accuracy for analytics and AI training purposes. Strong background in statistical
analysis, data categorization, and cross-functional collaboration with technical teams. Currently
advancing skills in machine learning workflows and AI model training through ongoing MSc in Data
Science.

Experience

Detail-oriented Data Annotator with 8+ years of experience in data quality assurance, pattern
recognition, and systematic data validation across financial services, retail, and agriculture
sectors. Proven expertise in creating structured datasets, implementing quality control frameworks,
and ensuring data accuracy for analytics and AI training purposes. Strong background in statistical
analysis, data categorization, and cross-functional collaboration with technical teams. Currently
advancing skills in machine learning workflows and AI model training through ongoing MSc in Data
Science.

Education

Master of Data Science (Ongoing) – Open University of Kenya (Feb 2025 – Jun 2026)
Certified Data Scientist (IABAC) –2025

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