tietovarastokehittäjä

A tietovarastokehittäjä, or data warehouse developer, is a professional responsible for designing, developing, and maintaining data warehouses. These systems are central repositories for integrated data from various sources within an organization, used for reporting, analysis, and business intelligence. The developer's role involves understanding business requirements and translating them into efficient data structures and ETL (Extract, Transform, Load) processes.

Key responsibilities include data modeling, which involves creating logical and physical schemas for the data warehouse, often employing dimensional modeling techniques like star or snowflake schemas. They also develop and optimize ETL processes to extract data from operational systems, transform it into a consistent format, and load it into the data warehouse. This requires proficiency in SQL, scripting languages, and ETL tools.

Tietovarastokehittäjät work with database technologies, ensuring data integrity, performance, and security. They collaborate with business analysts, data analysts, and other stakeholders to ensure the data warehouse meets analytical needs. Troubleshooting and performance tuning of the data warehouse and ETL jobs are also crucial aspects of their work. The ultimate goal is to provide a reliable and accessible source of information for decision-making.