Freelance Data Analysts in WarsawFreelance Data Analysts in Warsaw
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Mikita Drozd's avatar
Mikita Drozd
Warsaw, Poland
Certified Senior Tableau Developer, Designer, Consultant
Certified Senior Tableau Developer, Designer, Consultant
Cover image for World Health Organisation | Sustainable Development Goals
World Health Organisation | Sustainable Development Goals
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Cover image for Marketing Campaign KPI Dashboard
Marketing Campaign KPI Dashboard
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5
Cover image for KPI Dashboard: Operations
KPI Dashboard: Operations
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3
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Data Analyst(3)
Alexandru X's avatar
Alexandru X
Warsaw, Poland
Polymath | Strategic Innovator | Versatilist
Polymath | Strategic Innovator | Versatilist
Cover image for Automation System - SEO/Marketing Agency
Automation System - SEO/Marketing Agency
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29
Cover image for AI Data Extraction and Processing
AI Data Extraction and Processing
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25
Cover image for Multi-VM Honeypot Network Setup and Log Analysis
Multi-VM Honeypot Network Setup and Log Analysis
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19
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Data Analyst(1)
Pavel Khrapko's avatar
Pavel Khrapko
Warsaw, Poland
Creative AR/VR Developer & 3D Modeler
Creative AR/VR Developer & 3D Modeler
Cover image for E-commerce clients segmentation
E-commerce clients segmentation
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4
Cover image for Bringing products to life with AR and 3D viewer
Bringing products to life with AR and 3D viewer
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14
Cover image for Low-Poly Tank 3D Model "Maus"
Low-Poly Tank 3D Model "Maus"
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4
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Data Analyst(1)
Eugene Panchenko's avatar
Eugene Panchenko
Warsaw, Poland
AI Agents & Automation for Small Business & Hospitality
New to Contra
AI Agents & Automation for Small Business & Hospitality
Cover image for Market research you can act on — a decision brief
Market research you can act on — a decision brief
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Cover image for A monitor that does your
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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Cover image for I turn raw, messy business
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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Cover image for A Telegram bot that turns
A Telegram bot that turns any invoice or receipt photo into a verified Excel record: OCR extracts supplier, tax ID, dates, net/VAT/gross and line items; every document is arithmetic-checked (net + VAT = gross) and duplicates are caught. One command exports a multi-sheet workbook. Live 6 months: 484 documents, 135 suppliers, 75 mismatches auto-caught, zero manual entry.
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Data Analyst(4)
Tetiana Vinnytska's avatar
Tetiana Vinnytska
Warsaw, Poland
Data Analytics Expert
New to Contra
Data Analytics Expert
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 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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Cover image for GA4 Ecommerce Analysis & Tableau
GA4 Ecommerce Analysis & Tableau Dashboard In this project, I transformed raw Google Analytics 4 data into an interactive Tableau dashboard. Key highlights: Processed 1.7GB of data in BigQuery using SQL (UNNEST, CTE). Visualized the full User Purchase Journey and conversion rates. Analyzed performance by device, OS, and landing pages to identify growth opportunities.
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Data Analyst(4)