Freelancer Olha K. (data Processing, testing & QA) ≡ olha

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Olha K.
Ukraine
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jira QA Engineer Manual testing web testing microsoft excel python numpy Tableau Google Sheets

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Data Processing 11 USD for hour

Programming

Testing & QA 9 USD for hour

Design & art

Infographics 9 USD for hour

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Marketing Research 13 USD for hour
Website SEO Audit 11 USD for hour

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E-commerce SQL Analysis

Databases & SQL

A BigQuery SQL project analyzing account registration dynamics and email engagement across countries for an e-commerce platform. SQL BigQuery CTEs

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A/B Testing Analysis

Data Processing

Statistical evaluation of 4 product A/B tests across 4 funnel metrics — with segment breakdowns by country, device, continent, and channel using Z-tests for proportions. SQL Python Tableau BigQuery Z-test for proportions

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E-commerce Sales Analysis

Data Processing

End-to-end analysis of an online furniture store — SQL extraction from BigQuery, EDA, sales dynamics, pivot tables, correlation analysis, and 7 statistical hypothesis tests. SQL Python Tableau BigQuery Z-test Mann-Whitney Kruskal-Wallis ANOVA Chi-…

Olha K.
Ukraine
0 0
Available for hire

Projects -
Rating -
Rating 121

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Data Processing

Testing & QA

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Programming

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