I will do excel data cleaning, merge csv files and fix messy spreadsheets

Poland

I speak English, Polish

Freelance developer

I fix bugs and build small automation tools — Python, JavaScript, PHP and SQL. Most of what I take on is whatever is blocking you right now: a bug you've lost a day to, a report whose numbers don't a...
About this Gig

Send me the messy file. You get back one clean spreadsheet - and a list of

every change, so you can check the result rather than trust it.


A worked example from my portfolio: 457 rows in, 420 out, and all 37 that

went are accounted for - 34 duplicates and 3 blanks, each on a changes tab

with its own count. Totals that disagreed with quantity x price were

recalculated and the originals flagged in red, not overwritten.


Excel cleaning, CSV merging and Google Sheets tidy-ups:

- Duplicates removed, formatting standardised, dates and numbers fixed

- Several files or exports merged into one consistent sheet

- Split, sorted and pivoted, with formulas, formatting and charts

- A reusable script that redoes the whole cleanup every time a new export lands


Big file that crashes Excel? I work in Python - 50,000 rows is the same job

as 500. Packages cap at 10,000 rows because the form makes me pick a number;

if yours is bigger, message me for a custom offer at the same rate.


Your file gets the same treatment.


Not sure yours is fixable? Send the file or ten sample rows and I'll tell you

free what can be cleaned and what it costs - before you order.


My Portfolio