JUG Ru Group

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.

Co-founder of Plumbr, the only performance monitor solution with root cause detection, where he now contributes as core developer and lead of engineering team. Besides his daily technical tasks he is an active blogger, 3 times JavaOne RockStar and frequent conference speaker.

Troubleshooter, assumptions destroyer, finds the most joy when deletes deprecated code.

For the last few years, Yuriy has played an integral role in the CUBA Platform development team and contributed a lot to the platform architecture design, specializing in front end technologies. As part of my academic activities, he mentored applied math students from Samara University.

Currently, working at IntelliJ IDEA Team of JetBrains and trying to bring new useful tools to developers daily routine.

Sebastian Daschner is a Lead Java Developer Advocate for IBM, author, and trainer and is enthusiastic about programming and Java (EE). He is the author of the book "Architecting Modern Java EE Applications". Sebastian is participating in the JCP, helping to form the future standards of Java EE, serving in the JAX-RS, JSON-P and Config Expert Groups 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 also a heavy user of Linux and container technologies like Docker. He evangelizes computer science practices on his blog, his newsletter, and on Twitter via @DaschnerS. When not working with Java, he also loves to travel the world — either by plane or motorbike.

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

Lately Maxim is working on API development for mobile apps and security layers. Basically, he uses Spring and Netflix ecosystem, but checks out everything that is worth trying on GitHub.

He is experimenting with reactive approaches, a couple of experiments got to the production level.

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.

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

Oleg works on enterprise Java web apps for 10 years already, his primary specialization is E-Government information systems in Public Administration. Today he is employed by JUG Ru Group. Prior to joining JRG Oleg was working at Sberbank Technology where he was solving architectural problems and research in the field of automated business process management systems. And many things prior to STB like gosuslugi.ru (central e-government portal in Russia), Integrated Electronic Medical Record (central medical portal), information analysis and emergency calls system for Russian citizens, The IUPAT Integrated Member Services information system in the USA, MMORPG games at Playtox, Flussonic streaming media server and StarView Operational Intelligence platform (JVM-based programming language and IDE).

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.

Anton is a Developer Advocate at JetBrains. Working with TeamCity and IntelliJ IDEA. Programming in Java and Kotlin. Professional interests include programming languages, middleware, and developer tooling.

Andrei has been working in IT for more than 15 years, for the last 7 years — in 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.

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.

Principal Programmer / Architect at T-Systems, 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.

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.

Volker Simonis works in SAP JVM Technology group. He is an OpenJDK contributor from the very beginning and helped SAP to engage in the OpenJDK project. He's the project lead of the OpenJDK PowerPC/AIX and s390x porting projects, a JDK reviewer and JCP Executive Committee representative for SAP. He's also a member of the JCP JSR 379 (Java SE 9), JSR 383 (Java SE 10) and JSR 384 (Java SE 11) Expert Groups.

Vsevolod has more than 9 years in IT industry. He tried his hands at different roles and directions. He worked with automated testing, fullstack development in different languages. Some time ago he lived in California and worked under contract at Google. Managed to work with various clients from financial sector. Currently working at NEO SPCC startup where he's developing on Go and is very interesting in distributed systems.