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Onyemazuwa Osonye

@onyemazuwaosonye

Message

I improve data quality through rigorous analysis, QA, and annotation.

Nigeria

Message

What I'm looking for

I'm looking for remote, task-based data quality, analytics, QA, or NLP annotation work where I can apply consistent evaluation criteria, investigate ambiguous cases, document findings clearly, and deliver accurate results independently.

I've reviewed and evaluated 392,000+ raw records at Infotact Solutions, applying repeatable criteria to assess relevance, accuracy, and consistency for cohort retention and customer lifetime value analysis.

I clean, structure, and analyze large datasets using Excel, SQL, Power BI, and Python in progress. My work includes building an Excel-based sales performance tracker with pivot tables, charts, and audit logging, while documenting ambiguous data points and maintaining calibrated decisions across a four-person team.

Previously at EEW Technology Limited, I maintained accurate operational records, coordinated technical service delivery, and diagnosed client system issues against defined criteria. I'm comfortable working independently in remote, deadline-driven environments where clear documentation and careful judgment matter.

Experience

Work history, roles, and key accomplishments

Current

Data Analytics Intern

Current

Infotact Solutions

Jan 2026 - Present (7 months)

Reviewed and evaluated 392,000+ raw records for relevance, accuracy, and consistency as part of a cohort retention and customer lifetime value analysis. Applied structured criteria to classify customer behavior and maintained consistent decisions across a four-person team.

Data Quality Data Analysis Excel SQL GitHub Kanban Documentation