JUG Ru Group

Sebastian Daschner is a self-employed Java consultant, author and trainer and is enthusiastic about programming and Java. He is the author of the book "Architecting Modern Java EE Applications". Sebastian is participating in open source standardization processes such as the JCP or the Eclipse Foundation, helping forming the future standards of Enterprise Java, and collaborating on various open source projects. For his contributions in the Java community and ecosystem he was recognized as a Java Champion, Oracle Developer Champion, and JavaOne Rockstar. Besides Java, Sebastian is a heavy user of cloud native technologies and anything related to enterprise software. Sebastian evangelizes computer science practices, in his newsletter, podcast, and videos, and on Twitter via @DaschnerS. Sebastian kickstarted the JOnsen and jSpirit unconferences that connect Java developers throughout the globe. When not working with technology, he also loves coffee and to travel the world.

For the last 10 years Yuriy have been developing libraries, frameworks and tools for developers. As part of his academic activities, he mentored applied math students from the Samara University.

Now he works in IntelliJ IDEA team trying to improve lives of developers using various tools. Author of the Selenium UI Testing plugin and maintainer of the Gauge for IntelliJ IDEA support.

Fan of Reactive. Works on RSocket and improves Project Reactor along the way. Co-author of the book "Hands‑On Reactive Programming in Spring 5". Java Champion.

Program coordinator.

Lead Software Engineer of Development Practices department in NetCracker. Spent more than 7 years working on the edge between Release Engineering, Development and IT. Started with support of existing systems which then evolved to process transformations, new tools in VCS & CI streams and their integrations with other parts of NetCracker's dev ecosystem. Likes Groovy, Jenkins, JUG Ru Group conferences and to make developers happy.

Ivan Krylov is a JVM developer for the last 15 years. Ivan specialises in JIT compiler infrastructure and AOT compilation.

Volker Simonis is a Principal Software Engineer in the Corretto team at Amazon Web Services. He works on Java Virtual Machines since 2004 and is an OpenJDK Member, Reviewer and Committer right from the start. Before joining Amazon he worked for SAP, Sun Microsystems and the University of Tübingen from where he holds a master and PhD degree in Computer Science. He represented SAP in the Executive Committee of the JCP and was a member of the JCP Expert Groups for Java SE 9 to 13. He's a passionate and frequent speaker at conferences around the globe and can easily be contacted at @volker_simonis.

Vladimir has been working on performance and scalability of NetCracker platform (a software used by telecom operators for automatization of network management processes and network equipment) for ten years. His focus is Java and Oracle Database performance optimisations. Vladimir is an author of more than a dozen of performance improvements in the official PostgreSQL JDBC driver.

Gleb has seen some things.

Oleg Šelajev is a developer advocate for the GraalVM project at Oracle Labs, which aims to make programs run faster and developers more productive. He helps to organize VirtualJUG, the online Java User Group, and a GDG chapter in Tartu, Estonia. Became a Java Champion in 2017. Loves pizza and playing chess. Favorite languages: Java, JavaScript, and Clojure.

Anton is a Developer Advocate at JetBrains in the Kotlin project and "Razbor poletov" podcast resident. Professional interests include programming languages, middleware, and developer tooling.

Sergey works on a high-frequency trading application at Raiffeisenbank since 2016. Basically, he's into speeding up the existing and writing the new low-latency Java code. Before that he worked at Intel as an engineer for the compilers' performance for C / C ++ / FORTRAN languages.

Co-leader of the Bulgarian Java User Group. In addition to work, Dmitry performs talks at conferences. Organizer of jPrime.io Conference — largest Java conference in Balkans.

List of his main interests includes dynamic languages on JVM (Nashorn project) and Java EE, as well as all Spring Framework's infrastructure. He is into experimental Java projects.

10+ years experience in IT, starting from C/C++ and geophysics and now basically JVM languages/JS and financial services.

Basically, he uses Spring and Netflix ecosystem, but checks out everything that is worth trying on GitHub. He is experimenting with reactive approaches.

He wants to understand not only his apps but also everything around them, thus he is working with all the infrastructure (logs, CI/CD, orchestration) and tests. To sum up, DevOps is our everything.

Andrei has been working in IT for more than 15 years, head of the Java developers at KROK. During his career he took part in many custom development projects, mainly e-document flow systems and business processes automatization for several big Russian companies as a senior developer and an architect. At the universities of Moscow, he delivers lectures in development basics with the use of Java technologies. Organizer and leader of Moscow Java developers community.

Nikita has been developing Observability tools for the last 10 years. At first as co-founder and lead engineer at Plumbr and now as a maintainer of the Java instrumentation library in OpenTelemetry project.

He enjoys removing old code, challenging assumptions, and troubleshooting.