Projects using SQL in Warsaw
Projects using SQL in Warsaw
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Dima Umen
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Web platform for efficiency monitoring
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18
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Francesco Stara
Professional Power BI dashboard for an English E-Commerce
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26
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Eugene Panchenko
A private AI assistant that runs on your own server and talks to you through Telegram. It remembers context across days, sends morning and evening digests, drafts replies in your voice, follows up on open threads, and monitors what you point it at — alerting you only when something needs a decision. Private by design: each person gets their own isolated assistant. Running in daily production use, multi-tenant from the start.
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Andrei Kaleshka
Implemented talents directory page for Kajabi Experts.
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32
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Tetiana Vinnytska
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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34
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Ibrokhimkhon Abbasov
Financial Analyst at Citi Bank
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4
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Chris Gawlinski
App development and consulting services
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8
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Eugene Panchenko
A monitor that does your job-searching for you: it polls job boards on a schedule, pulls in new postings, de-duplicates against what you've seen, and filters to the roles and criteria you care about. You get one daily digest instead of a dozen open tabs, plus a record of what you've applied to. New sources plug in as connectors, each tested against the live site so the monitor keeps working when a board changes format.
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85
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Andrei Kaleshka
Prevent account sharing
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3
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Tetiana Vinnytska
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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37
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Eugene Panchenko
I turn raw, messy business data into a reporting layer a decision-maker actually reads: a one-glance dashboard (spend by month/category, price movements), breakdowns by supplier and category, price-trend tracking, and a ledger where every figure reconciles (net + VAT = gross, totals tie back). Rebuilds into a multi-sheet Excel workbook. Works from any CSV, spreadsheet or accounting export.
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96
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Tetiana Vinnytska
Global Media & Entertainment Data Analysis: 25k+ Movies Dataset
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3
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Tetiana Vinnytska
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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