API

American Express

Andrey Breslav

Android

Arrow

Asynchronous Programming

Backend

Basecamp

Cedric Beust

Charles Anderson

Charting

Christina Lee

Client Side

Colin Fleming

Community

Corda

Coroutines

DSL

Dai Williams

Data Science

Dave Ford

Eduard Gurskiy

Edvin Syse

Eugenio Marlett

Extension Functions

Extension Properties

FinTech

Functional Programming

Funktionale

Gaming

Gradle

Groovy

Guy Heylens

Heroku

Hootsuite

Huyen Tue Dao

Jake Wharton

Jay Ohms

JetBrains

Joe Kutner

Johannes Rudolph

John Crossley

Jorge Castillo

Kategory

Ken Kousen

Kirill Skrygan

Kobalt

Kotlin Native

Marcos Placona

Mario Arias

Mario Zechner

Michael Bailey

Mike Hearn

Mikhail Chernykh

Multiplatform

Mykhailo Kulak

Neil Powers

Open Source

Pinterest

Project Reactor

Raul Raja and Paco Estevez

React

Reactive Programming

Rodrigo Oliveira

Roman Elizarov

Sebastian Deleuze

Server Side

Serverless

Simon Tse

Spring Boot

Square

Stefan Tomm

Thomas Nield

Tools

Tor Norbye

TornadoFX

Trello

User groups

Vishnu Rajeevan

Web Deployment

Zalando