You will get Data Cleaning & Data Preparation (up to 50k rows)
Rising Talent
Rising Talent
Project details
I’m a bilingual Data Analyst with over 1,700 hours of experience on UpWork, specializing in cleaning, preparing, and validating datasets for accurate and reliable analysis. With expertise in Python, Excel, and SQL, I remove duplicates, correct formatting issues, fix missing values, and deliver clean, organized datasets ready for dashboards, reporting, and decision-making. My workflow is fast, transparent, and detail-oriented, ensuring that you receive a dataset that is fully prepared for your business or analytical needs.
Data Tool
PythonWhat's included
| Service Tiers |
Starter
$40
|
Standard
$70
|
Advanced
$120
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 4 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages Mined/Scraped | 0 | 0 | 0 |
Number of Sources Mined/Scraped | 0 | 0 | 0 |
Optional add-ons
You can add these on the next page.
Additional Revision
+$10
Extra 20k rows of data cleaning
(+ 1 Day)
+$25Frequently asked questions
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Nicolas O.
Dec 30, 2025
Data Entry and Analysis Specialist
About Maximiliano Lionel
Bilingual Data Analyst
Mar del Plata, Argentina - 12:09 pm local time
Your data has answers, I help you find them fast, and act on them with confidence.
I'm a bilingual (English/Spanish) Data Analyst with a track record of turning messy, scattered data into clean dashboards, automated reports, and insights that actually drive decisions.
What I bring to your project:
🔧 Tech Stack
Python (Pandas, NumPy, automation scripts)
SQL (complex queries, ETL, optimization)
Tableau, Power BI & Data Studio
Advanced Excel
Automation with n8n, Zapier & Make
✅ What you get
Datasets that are clean, reliable, and ready to use
Dashboards and reports that update themselves
Clear visualizations
Insights tied directly to operations, marketing, or strategy
Clear documentation and proactive communication throughout
If you need a data analyst who gets up to speed quickly, communicates clearly, and delivers work you can actually use, let's talk.
Send me a message with your challenge. I'll tell you exactly how I'd approach it.
Steps for completing your project
After purchasing the project, send requirements so Maximiliano Lionel can start the project.
Delivery time starts when Maximiliano Lionel receives requirements from you.
Maximiliano Lionel works on your project following the steps below.
Revisions may occur after the delivery date.
Dataset Inspection
I review your dataset to detect missing values, duplicates, formatting issues, incorrect data types, and structural problems before starting the cleaning process.
Automated & Manual Cleaning
I apply cleaning techniques using Python and Excel to fix errors, standardize formats, remove duplicates, correct data types, and handle missing values accurately.