Jon Pretty


Jon has worked full-time as a Scala developer since 2004, and has been heavily involved in the Scala community for as long as it has existed.

He travels extensively, speaking on a variety of Scala topics at many Scala events worldwide, including talks on his open-source libraries, tools and original research into the Scala type system. He currently offers advanced Scala One training courses around Europe.

Jon chairs the Scala Center Advisory Board.


A Fresh Approach to Compiling JVM Languages with Fury

45' Talk

Scala is unique in combining a rich and expressive static type system with subtyping at its heart. The inclusion of subtyping adds significant complexity to the language, leading to features like type bounds and variance….

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