Businesses generate data in millions and billions and thus, it becomes necessary to store and process it timely. To handle this process, ETL developers play a significant role. If you’re someone who’s new to this term – ETL Developers, worry not. In this article, we’ll be discussing ETL developers, his/her roles and responsibilities, the skills required to become one, the career scope, and the qualifications needed. 

ETL means Extract, Transform, and Load. The method of transferring data from different sources to its warehouse is ETL development. Hence, an ETL developer is one whose responsibility is to manage data. The method followed in ETL development is initially they EXTRACT data from sources, then TRANSFORM it and LOAD it into the data warehouse. All kinds of business-related data are designed, developed, and maintained by the ETL developer. ETL is divided into three stages: 

• Extract – In this process, all kinds of useful data generated from different sources (text files, raw data, online sources, etc.) are extracted. The extracted data is stored in consolidated form. Different kinds of tools can consolidate the data in sources such as the cloud, or external systems.

• Transform – In this process, the extracted data (raw data) is transformed (structured and formatted). Before processing the data for use, it has to be transformed so as to be compatible with the standards. This process involves cleansing standardization, deduplication, verification, and sorting.

• Load – The final stage in ETL is load. In this process, the transformed data is loaded into the data warehouse system. A warehouse may include several tools to represent data from multiple dimensions and then make it acc