I will do data cleaning and preparation in python, sql and excel

Certaines informations sont présentées en anglais.

Ukraine

Je parle Ukrainien, Russe, Anglais, Estonien

Analytics Engineer

Hi, I'm Yehor. I focus on data analytics, SQL database management, and data pipelines. Tools I work with: - SQL & PostgreSQL: complex queries, CTEs, JOINs, window functions - Python & Pandas: data cl...
À propos de ce service

Messy spreadsheets, duplicate rows, broken dates, missing values? I will turn raw data into a clean, consistent, analysis-ready dataset.


WHAT I DO

Remove duplicates and fix inconsistent records (JOHN / john / John)

Handle missing values: fill, flag or remove

Standardize data types and formats (dates, numbers, text)

Validate data: consistency, ranges, business rules

Merge multiple files or tables into one dataset

Load clean data into PostgreSQL


TOOLS

Python (Pandas), SQL, PostgreSQL, Excel, CSV, JSON


YOU GET

Cleaned file (CSV, XLSX, JSON or SQL table)

Short report of all changes (Premium)

Reusable Python script (Premium)


WHY ME

Fast turnaround and clear communication

Original data is never overwritten

Every change is documented


Mon portfolio