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John Onyikwa

John Onyikwa

Senior Data Analyst - Financial Services

KENYA flag
Nairobi, Kenya
$17.00/hrExpertData Annotation Tech

Key Skills

Software

Data Annotation TechData Annotation Tech

Top Subject Matter

No subject matter listed

Top Data Types

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Top Label Types

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Freelancer Overview

With over three years of hands-on experience in data analysis and a strong foundation in statistical methodology, I excel at transforming complex datasets into actionable insights that drive business growth. My expertise spans predictive modeling, trend analysis, and advanced experimentation, including designing and managing end-to-end machine learning pipelines and ensuring model governance and ethical compliance. I am proficient in tools such as SQL, Python (Pandas, NumPy), R, and Excel, and have extensive experience with data visualization platforms like Tableau and Power BI. My background includes automating data workflows, building scalable ETL processes, and collaborating with cross-functional teams to deliver high-quality, reliable AI training data. I am passionate about data integrity and have a proven track record of translating technical findings into clear, impactful recommendations for executive stakeholders.

ExpertEnglish

Labeling Experience

Data Annotation Tech

Senior Data Analyst

Data Annotation TechImageBounding Box
I managed the high-precision bounding box annotation for many floor plans to train a building-recognition AI, ensuriong a higher percentage accuracy rate through a triple- pass quality control.

I managed the high-precision bounding box annotation for many floor plans to train a building-recognition AI, ensuriong a higher percentage accuracy rate through a triple- pass quality control.

2020 - 2025

Education

N

New York University

Bachelor of Science, Data Science

Bachelor of Science
2017 - 2020

Work History

F

Fintech and Quant Firms

Senior Data Analyst

New York
2022 - 2024
R

Regional Powerhouses

Junior Data Analyst

New York
2021 - 2022