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Oleg Mayvaldov

@olegmaivaldov

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I maintain accurate, confidential data records across logistics, software testing, and sports operations.

United States

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What I'm looking for

I'm looking for a role where I can maintain accurate, confidential data records, improve data quality, and support reliable operations in logistics, software, real estate, or sports technology.

I've maintained inventory accuracy and processed inbound and outbound shipments at Amazon Grocery Warehouse, organizing high volumes of stock data and helping reduce data discrepancies by 15%.

For Yan Maar, I performed data verification, text proofreading, and software quality control across digital content. I executed functional, regression, and user acceptance testing while documenting issues and protecting sensitive information.

As a Basketball Statistician and Table Official for the Ukrainian Basketball Federation, I entered live game statistics, verified official scoring, and prepared post-game reports for audit and public distribution.

I've also supported web applications at Webcase Studio using Python and Django, verifying API data, managing databases, and building dataset import and export scripts. My work is grounded in data quality, typing accuracy, digital recordkeeping, and confidentiality.

Experience

Work history, roles, and key accomplishments

Warehouse Associate

Amazon Grocery Warehouse

Jun 2024 - Apr 2026 (1 year 10 months)

Maintained inventory accuracy and processed inbound/outbound shipments through rigorous data entry into the warehouse management system. Collaborated with logistics leads to streamline digital recordkeeping and reduce data discrepancies by 15%.

Data Entry Data Verification Data Quality Database Management Logistics

Software Manual Tester / Text Proofreader

Yan Maar

Sep 2012 - Mar 2024 (11 years 6 months)

Performed detailed data verification and quality control across digital content to ensure data integrity and system accuracy. Executed functional, regression, and user acceptance testing while maintaining high typing accuracy and strict attention to detail.

Data Verification Data Quality Data Integrity Software Testing Attention To Detail

Junior Backend Developer (Python/Django)

Webcase Studio

Sep 2021 - Feb 2022 (5 months)

Maintained backend functionality and facilitated database management for web applications using Python and Django. Developed and maintained scripts for importing and exporting large, structured datasets while ensuring high data quality.

Python Django Database Management REST APIs Data Quality

Basketball Statistician & Table Official

Ukrainian Basketball Federation (FIBA)

Sep 2016 - Feb 2022 (5 years 5 months)

Entered live game statistics in real-time, managing rapid streams of unstructured action data during national championships. Collaborated with referees and game officials to verify scoring accuracy and ensure compliance with strict regulatory standards.

Data Entry Database Management FIBA Regulations