What is an ETL Developer?
An ETL Developer is an IT specialist who designs data storage systems for companies, and works to fill that system with the data that needs to be stored. ETL stands for “extract, transform, load," which is the process of loading business data into a data warehousing environment, testing it for performance, and troubleshooting it before it goes live. ETL Developers must be experts at taking a big-picture view of a company’s data situation to come up with comprehensive data storage solutions.
ETL Developers generally work as part of a team. They are sometimes employed by a single company. Or, they may act as consultants to multiple organizations. According to the Bureau of Labor Statistics demand for Database Administrators, which includes ETL Developers, is expected to increase 11 percent through 2024. This growth will be driven by the increased data needs of companies, which will also increase the need for ETL Developers.
ETL Developer Duties and Responsibilities
Determine Data Storage Needs
Design and Create a Data Warehouse
Extract, Transformation and Load of data
Test and Troubleshoot
ETL Developer Skills
While An ETL Developer should certainly have unique technical skills, they should also have an analytical mind, to take a big-picture view of a company’s data situation and determine the database needs. Solid communication skills are also very important in this job, to be able to understand the company’s needs and communicate any problems. ETL Developers must also be able to work well in a team environment and lead a team of their own. Below are some other skills that an ETL Developer should have.
Core skills Based on ETL Developer job listings we looked at, employers are looking for candidates with these core skills. Any prospective ETL Developer should have a strong proficiency in these core skills before applying for the job.,
- PL/SQL Oracle development experience
- Hands-on experience with NoSQL databases
Advanced skills There are other skills that hiring managers would like an ideal candidate to have. These are usually listed as preferred skills, and having them will improve your chances of landing an ETL Developer job.
- Experience with Hadoop Components – HDFS, Spark, Hbase, Hive, Sqoop
- Experience with OLAP, SSAS and MDX
- Java and/or .NET experience
Tools of the trade The job of an ETL Developer is very technical, and requires the use of many specialized tools to get the job done. Make sure you know how to use the following tools if you are looking to apply for ETL Developer jobs.
- Relational databases (SQL Server)
- ETL tool sets, such as SSIS
- Modeling tools such as Toad Data Modeler, Erwin and Embarcadero
- .Net languages and Business Objects BI
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ETL Developer Salary
ETL Developer Resources
We want you to have access to all the information you need about the job, duties and career path of an ETL Developer. That is why we curated this list of links to blogs, industry groups, and insightful books that will help you discover more about becoming an ETL Developer.
On the WebOde to Code
Ode to Code is a simple but incredibly useful blog with tons of info for developers, covering a widerange of relevant topics.Percona MySQL Performance Blog
This great blog is home to hundreds of useful MySQL articles and covers other useful subjects for ETL Developers.
Industry GroupsAssociation for Computing Machinery
ACM works to advance computing as a science and profession, with publications, conferences and education opportunities.Computing Research Association
CRA is a good place to come for job listings and to keep up with industry developments.
ETL Developer BooksThe Data Warehouse Workshop: Providing Practical Experience to the Aspiring ETL Developer
This book is intended to help the aspiring Data Warehouse (ETL) developer get handson experience building and maintaining warehouses.The Data Warehouse Toolkit: The Definitive Guide to Dimensional Modeling
This book is a complete library of dimensional modeling techniques, with important tools for an ETL Developer to be familiar with.Database Systems: Introduction to Databases and Data Warehouses
This is a great introduction into the various warehouse systems that an ETL Developer can design and use to meet business needs.