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Stefan Stojanović is a highly experienced Senior Data Engineer with a strong background in data engineering and business intelligence. Currently at Telesign since September 2022, Stefan has played a pivotal role in developing the Score API, which assesses phone number fraud risk. Prior to this, Stefan held senior data engineering positions at FishingBooker and TeleSign, where responsibilities included ETL design, data modeling, and implementation of analytical applications. Experience at Telenor Srbija included roles as Customer Insight Systems Architect and BI Data Integration Developer, focusing on data source analysis, ETL processes, and OLAP application development. Stefan also worked as a BI System Analyst at Piraeus Bank, enhancing data warehouse systems, and began the professional journey as a Business Intelligence Analyst at Telenor d.o.o. Educated at the Faculty of Organizational Sciences with a BS in Information Systems and Technology, Stefan brings extensive expertise in data management and quality assurance across various industries.