I will write, debug, and optimize complex sql queries and python data scripts, pipeline

ChernyshenkoMik

Spain

I speak English, Russian, Spanish

Product Analyst

I am a Product Analyst with nearly 3 years of experience specializing in high-volume B2C subscription platforms and telecommunications. I bridge the gap between behavioral event streams and revenue by...
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About this Gig

Stuck with slow SQL queries, complex window functions, or messy datasets in Python? Need reliable data aggregation delivered today?


I will write, optimize, and document high-performance SQL and Python scripts for your business, research, or backend needs.


CORE EXPERTISE:

Database Dialects: PostgreSQL, MySQL, BigQuery, Snowflake, SQLite.

Advanced SQL: Window functions, CTEs, complex joins, indexing, query execution plan optimization.

Python Data Wrangling: Pandas, NumPy, data cleaning, automated transformation pipelines. Exploratory Data Analysis (EDA) & Anomaly Detection.


Need fast turnaround? Send me your schema and requirements, and Ill get to work immediately!

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write, debug, and optimize complex sql queries and python data scripts, pipeline
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write, debug, and optimize complex sql queries and python data scripts, pipeline

Technology:

Excel

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Google Sheets

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Jupyter Notebook

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Power BI

•

Tableau

+4 more

Analysis type:

Impact analysis

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Descriptive analysis

+3 more

Expertise:

Prediction

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Forecasting

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Probability

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Anomaly detection

+6 more

Programming language:

Python

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SQL

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DAX

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