Freelancers using SQL in Warsaw

Freelancers using SQL in WarsawFreelancers using SQL in Warsaw

Cover image for CRUD API Workflow (Create Record) with Buildship

CRUD API Workflow (Create Record) with Buildship

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Cover image for Web platform for efficiency monitoring

Web platform for efficiency monitoring

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Cover image for Professional Power BI dashboard for an English E-Commerce

Professional Power BI dashboard for an English E-Commerce

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Cover image for Implemented talents directory page for Kajabi Experts.

Implemented talents directory page for Kajabi Experts.

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Cover image for Analyzed revenue lifecycle using cohort

Analyzed revenue lifecycle using cohort tables and MMR tracking. Visualized user payment behavior, retention shifts, and total revenue dynamics for data-driven growth.

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Cover image for Financial Analyst at Citi Bank

Financial Analyst at Citi Bank

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Cover image for App development and consulting services

App development and consulting services

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Cover image for Prevent account sharing

Prevent account sharing

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Cover image for Comprehensive financial analysis across USA,

Comprehensive financial analysis across USA, EMEA, and APAC. Tracks ARPPU, Paid User dynamics, and revenue by software category to drive global growth strategy.

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Cover image for Global Media & Entertainment Data Analysis: 25k+ Movies Dataset

Global Media & Entertainment Data Analysis: 25k+ Movies Dataset

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Cover image for Developed a comprehensive SaaS analytics

Developed a comprehensive SaaS analytics system to track MRR dynamics and Unit Economics. Backend: Wrote complex SQL scripts (Window functions, CTEs) to transform raw payment data into monthly cohorts. Frontend: Built a Tableau dashboard for monitoring LTV, Churn Rate, and Revenue expansion/contraction. Result: Business can now identify exactly why revenue is changing and track customer lifetime value in real-time.

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