An ETL developer works with data by collecting it from multiple databases, applications, or external sources, then organizing and preparing it before loading it into systems where it can be used effectively. The ETL developer plays a key role in keeping data clean, structured, and reliable for analysis. By building and managing data pipelines, ETL developers support reporting, analytics, and business intelligence efforts, helping organizations make smart, data-driven decisions

Your future duties and responsibilities

Your future duties and responsibilities

Data Pipeline Architecture Development: ETL Developers determine how data flows from the various source systems to their intended target (such as a data warehouse). An ETL developer sets the proper flow, identifies the appropriate tools, and outlines the method to ensure an effective process.
Writing SQL Queries for Extraction: ETL developers write SQL queries to extract the desired data from each database. These queries can be complex or easy, depending on how the data is stored in the source system.




Transforming Data Using Business Rules: Typically, raw data is not readily accessible for those who use it. ETL Developers transform data by cleaning, filtering, and shaping the data to meet the business’s rules and needs (such as transforming dates or calculating totals).
ETL Packages Designed for Future Use: ETL Developers create tools and templates that can be reused for similar ETL tasks, rather than rewriting the entire program from scratch each time. This makes the ETL Developer’s job easier and saves companies’ time.
Data Quality Checks and Validations: ETL Developers ensure the data is accurate, complete, with no duplicates, etc. They implement rules that can identify potential errors and address those errors before using the data.
Working with data analysts and architects: ETL Developers work closely with data analysts and architects to determine what data is needed, how it will be used, and how the data

📌 Senior Software Engineer-ETL Developer, Informatica, python (Bengaluru)
🏢 CGI
📍 Bengaluru