John Onwordi

Data Analyst and QA Tester with hands-on experience in web and mobile testing, data analysis, and usability improvement. Skilled in identifying bugs, analyzing datasets, and delivering actionable insights. Currently building expertise in cybersecurity and cloud security with a focus on real-world problem solving.

Data Analyst and QA Tester at Makar Jusen Investment Ltd (2024-01 – Present)

• Performed manual and exploratory testing on web and mobile applications, identifying functional defects and usability issues before release.
• Designed and executed structured test cases based on product requirements, improving test coverage and defect detection.
• Documented and tracked bugs with clear reproduction steps, screenshots, and expected vs actual results, enabling faster resolution by developers.
• Validated data accuracy by analyzing datasets using Excel and SQL, identifying inconsistencies and ensuring data integrity across systems.
• Built basic automated test scripts for repetitive test scenarios, reducing manual testing effort and improving efficiency.
• Monitored application behavior and analyzed logs to detect anomalies and potential system issues.
• Collaborated with developers to reproduce bugs, verify fixes, and support stable product releases.
• Created simple dashboards and reports to track defects, testing progress, and key data insights.
• Conducted exploratory testing to uncover edge cases and improve overall user experience.
• Applied data analysis techniques to extract trends and support decision-making in test scenarios.

Associate Degree in Computer Science – Yaba College Of Technology (1993-01 – 1997-12)