Juan Antonio Medina Iglesias began his career 20 years ago as an indie game developer and worked abroad four countries since then, from embedded software to enterprise applications. He has a lifetime's dedication to software craftsmanship.

Since 2006, he works at Santander Technology with a talented group of professionals who performed one of the biggest transformations in the banking industry.

Nowadays, he works as a Senior Engineer in the Digital Transformation team within Santander Technology UK.

Neil Cannon has been developing Android applications since 2010, following many years working on server-side Java. After trying the Kotlin 1.0 beta, he moved away from Java and has written as little Java as possible since.

Víctor Herraiz Posada is a senior software engineer with more than 15 years of experience in designing and developing complex distributed systems for companies such as Santander Group and Mapfre.

He is passionate about teaching and training. He has given courses and talks on accessibility, quality control, design patterns, and programming languages. He loves physics, metal music, playing guitar, video games and old sci-fi movies, books, and comics.

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