Josh (@starbuxman) has been the first Spring Developer Advocate since 2010. Josh is a Java Champion, author of 6 books (including O'Reilly's "Cloud Native Java: Designing Resilient Systems with Spring Boot, Spring Cloud, and Cloud Foundry" and "Reactive Spring") and numerous best-selling video training (including "Building Microservices with Spring Boot Livelessons" with Spring Boot co-founder Phil Webb), and an open-source contributor (Spring Boot, Spring Integration, Spring Cloud, Activiti and Vaadin, etc), a podcaster ("A Bootiful Podcast") and a YouTuber.

John has been developing Android apps since 2010. He worked on desktop clients in the 1990s, server side Java applications in the 2000s, and is waiting in anticipation to see what the 20s brings :)

Phil is a developer evangelist for Twilio and a Google Developer Expert living in Melbourne, Australia. He loves working with Ruby or JavaScript to build web applications and tools to help developers. He once helped build a website that captured the world's favourite sandwich fillings. He has too many GitHub repositories and you can find him working on some of them live on Twitch.

Away from the keyboard, Phil listens to ska punk, enjoys discovering new beers and runs the occasional half marathon.

Phil tweets at @philnash and you can find him elsewhere online at https://philna.sh.

Danny is a developer by heart, living in Berlin and leading the Android team at SoundCloud. He worked for companies like Groupon, Viacom, eBay and Alcatel and started his mobile career long before any Android with Java ME and Blackberry applications.

Danny writes and talks about mobile development and testing regularly and is a Google Developer Expert for Android and Kotlin.

Full-stack software engineer, with the main focus on Android and leader of the team developing native apps at the company he founded, Cosmin has joined the Android universe more than 12 years ago and has been passionate about building best-in-class mobile apps ever since. He believes great architecture and clean code are a must for an excelling product. He loves to travel.

I am a Senior Android Engineer with more than nine years worth of experience in developing Android applications, and Android Community Lead at Cognizant Softvision. Throughout my career, I've worked on designing, building and scaling Android products ranging from agribusiness and Point-of-Sale to power saving solutions.

I am passionate about mobile, pervasive and distributed computing, and I am also a PhD student and Teaching Assistant at the University Politehnica of Bucharest where I focus mostly on mobile computing. As a researcher, I have authored more than 20 scientific conference and journal papers and book chapters.

Salih is a Berlin based Senior Mobile Engineer who is a Google Developer Expert for Flutter and Dart. He likes sharing his knowledge with the people by mentoring aspiring developers, blogging and talking at conferences.

Android and Java/Kotlin Software Engineer with excellent technical skills and over 10 years of experience. Familiar with iOS and full-stack development, including Google Cloud and other corporate frameworks. Excellent Java and Kotlin programming expertise (recognized as a Google Developer Expert in Android and Kotlin). Author of “Android High-Performance programming”, and international speaker. Experience as a Tech Lead. 

Bob is the founder of SeMI Technologies, which is the business created around the open-source vector search engine Weaviate. Besides SeMI and Weaviate. Bob is a frequent speaker on the topics of open source, digital technology, software business, and creativity. He has spoken at around 50 events as a GDE in Europe, the US, and Russia.

He is a software developer, international speaker & passionate about mountain hiking.

He led the implementation of complex and distributed web backends serving millions of users for companies like FreeLogoServices, Vodafone, LogoMix, Deluxe, WaterSmart, Ausschreibungsdienste and many more.

Active contributor for open-source solutions like Beanstalkd console, and Riak admin interface. Expert in Cloud Technologies, Scalability, HA, Serverless, database systems like Google BigQuery, Redis, MySQL, Elasticsearch

Cloud software engineer at Hazelcast, author of the book "Continuous Delivery with Docker and Jenkins", trainer, and conference speaker. He specializes in Java development, Cloud environments, and Continuous Delivery. Former employee in a number of companies and scientific organizations: Google, CERN, AGH University, and more.

I am a Senior Android Engineer with over seven years experience in Android application development, with an overall experience of more than eight years in engineering.

Although my main focus is on mobile application development, my interests also include game programming, networking and operating system internals. I take pride in my critical thinking and I have a good reputation of getting things done correctly, in a timely manner, and as painless as possible. I am a fast and continuous learner and I make a good habit of keeping up to date with the latest trends in technology and engineering.

Last, but not least, I enjoy the occasional game of soccer, volleyball or table tennis, and I'm also a big fan of board games.

Director of Technology at KMMX, an IT training company focused on cutting-edge technologies.

Through more than 15 years as a consultant and instructor, Alex has trained developers in technologies such as SAP Portals, Zend, mongoDB, Appcelerator, Unity, among others. In the last couple of years he has focused on NativeScript, Angular, and the Internet of Things.

He is part of the Progress Developer Expert and Auth0 Ambassador program.

Bogdan is a passionate software engineer for about 5 years. He enjoys coding and solving real issues, thinking that by software he can make the world a better place. He is focused on JVM languages, such as Java, Kotlin, Scala, or Clojure, but considers that the key to success doesn't come with a language. His real passion is modern distributed systems and cloud-native architectures. As a personal belief, he considers that we as humans are living in a "distributed and reactive, full of actors system".

With a passion for doing things right, I always like to search for the best possible solution to a problem, be it code-related or not. I'm an avid Android developer and I love to share my knowledge with fellow colleagues from the developer community. When I'm not coding, I’m probably on the couch binge-watching TV series or travelling the countryside.

Victor has been an Engineering Manager at Google since 2019, leading a team of mobile and cloud engineers working on the Fitbit mobile apps. Previously, he led a development studio doing mobile and cloud development for startups or enterprise clients around the world. His technical skills include Android, Cloud Development, Java, Spring and others.

Also, Victor was cofounder of the GDG Communities in Bucharest, helping organise events that brought 100s of developers together.