Konrad is a software engineer at Allegro, a major Polish e-commerce company. He has over 20 years of experience in the IT industry in various roles (mostly as a developer and technical leader) in software companies. He spent the last 18 years of his career with Java-related technologies. For the past 3 years, he's used Kotlin as his primary programming language (with delight). He blogs a bit gives talks and contributes to open source.