---
title: "Gajanan B. - Data Engineer in Aurangabad | Tal"
description: "Meet Gajanan B., Data Engineer | ETL & Data Warehouse Specialist | AWS | Azure | PySpark | Airflow | Improved Operational Efficiency by 80% based in Aurangabad."
image: "https://tal.club/meet/gajanan-b/share-image"
---

# Gajanan B\. on Tal

## Headline

Data Engineer \| ETL & Data Warehouse Specialist \| AWS \| Azure \| PySpark \| Airflow \| Improved Operational Efficiency by 80%

## About

I am a Data Engineer who loves turning messy data into clear, reliable insights\. Over the past 6 years, I’ve moved from automating web data extraction to architecting complex cloud pipelines for global manufacturing leaders\. My focus is on efficiency—whether that’s reducing manual work by 40% through Airflow automation or migrating massive IoT datasets from Cosmos DB to SQL warehouses to make them easier to analyze\. I believe that clean code and a "Single Source of Truth" are the foundations of any successful data strategy\. What I bring to the table: \* Data Architecture: Expert in Star and Snowflake schemas\. \* Tech Stack: Heavy focus on Python, PySpark, SQL, and Azure\. \* Domain Knowledge: Specialized in Manufacturing IoT and OEE metrics\.

## Location

Aurangabad

## Work experience

Data Engineer at ALTEN, Sep 2022 \- Present · 3 yrs 10 mos, Pune District, Maharashtra, India, During my time at ALTEN, I overhauled manufacturing data systems by migrating complex NoSQL datasets into high\-performance relational architectures using PySpark\. I specialized in eliminating manual bottlenecks by building automated orchestration pipelines with Apache Airflow, which improved operational efficiency by 40%\. My work centered on ensuring total data reliability for OEE analytics through the development of automated validation frameworks and optimized SQL and Spark scripts\. Skills: Python, PySpark, SQL, Apache Spark, Airflow, Azure Data Factory, Cosmos DB, and Star/Snowflake Schema Design\.

Data engineer at Freelancer\- Self employed, Sep 2019 \- Aug 2022 · 3 yrs, Bengaluru, Karnataka, India

## Education

Bachelor of Technology \- BTech, Computer Science, Dr\. Babasaheb Ambedkar Marathwada University, Aurangabad

[View the original profile](https://tal.club/meet/gajanan-b)

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