Gabriel Bornea is a software engineer who’s been working with JVM languages for over 10 years now. A Team Lead at ING Tech Romania, his main expertise is in software architecture for risk assessment, fraud detection and global internet banking features. Before joining ING Tech Romania, he worked as a programmer for Cegeka and Dell. He is a Scala, F#, and Kotlin enthusiast and founder of the Kotlin user group in Bucharest. Gabriel is into automatic testing and reactive programming and believes that typed functional programming is the best way to write and develop applications with increased maintainability.