Our Speakers


* Click session title for abstract


Oliver Drotbohm

CEO and Head of Product for SF AppWorks
Oliver Drotbohm is member of the Spring engineering team at VMware, Java Champion and member of the JPA 2.1 expert group. He has been into developing enterprise applications and open-source projects for over 15 years now. His work focused on software architecture, DDD, REST, and persistence technologies. Oliver is regularly speaking at German and international conferences and the author of technology articles. The new book “Modulithic Applications with Spring” is due to release in 2022.

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Antoine Sabot-Durand

Consultant and Java expert at SCIAM
Antoine is a Java Champion and the Former Jakarta EE CDI spec lead. He was part of the Quarkus launch team at Red Hat and worked on major MicroProfile specs such as Fault Tolerance or Health Check. Today, Antoine is architect and technical expert in SCIAM. He is working on challenging projects with most of the technology he contributed t in the past.

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Antón Rodríguez

Principal Software Engineer at New Relic
Antón is a Principal Software Engineer focused on Data in motion. He has a passion for building high-throughput streaming systems and solving the challenges that come with them. He’s also a JUG organiser, blogger, podcaster and speaker.

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Barry Burd

Professor, Drew University
Barry Burd is the author of many books, articles, and videos, including "Android Application Development All-in-One For Dummies", "Java Programming for Android Development For Dummies", and O'Reilly's "Introduction to Functional Programming" video course.

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Bazlur Rahman

Java Champion | Software Engineer | JUG Leader | Author | Blogger | Editor at InfoQ and Foojay.IO.
A N M Bazlur Rahman works at Contrast Security as a Sr. Software Engineer. He has more than ten years of professional experience in the software industry, predominantly in Java and Java-related technologies. Recently, he was named a Java Champion.
Outside of his regular work hours, he loves to mentor, write, speak at conferences, and contribute to open-source projects. He is the founder and current moderator of the Java User Group in Bangladesh. He has organized meetups and conferences to share Java-related knowledge with the community since 2013. He was named Most Valuable Blogger (MVP) at DZone, one of the most recognized technology publishers in the world. Besides DZone, he is an editor for the Java Queue at InfoQ, another leading technology content publisher and conference organizer, and an editor at Foojay.io, a place for friends of OpenJDK. In addition, he has published four books about the Java programming language in Bengali; they were bestsellers in Bangladesh.
He earned his bachelor's degree from the Institute of Information Technology, University of Dhaka, Bangladesh, in Information Technology, majoring in Software Engineering. He currently lives in Toronto, Canada.

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Brian Benz

Brian is a Java Champion and a Cloud Advocate at Microsoft, helping developers get the most out of Java on Azure.
Brian is a Java Champion and a Cloud Advocate at Microsoft, helping developers get the most out of Java on Azure. Before Joining Microsoft, he was a program manager, evangelist, solution architect, consultant, developer, and author at IBM, Deloitte, and other companies. Find him on Twitter @bbenz. A current list of Brian's talks can be found at https://aka.ms/brianspeaking

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Cesar Hernandez

Senior Software Engineer at Tomitribe
Cesar Hernandez is a Senior Software Engineer at Tomitribe with +12 years of experience in Enterprise Java Applications. He is a Java Champion, Duke's Choice Award winner, Oracle Ace Pro, Jfrog SuperFrog, Open Source advocate, MicroProfile contributor, Jakarta and Apache TomEE committer, JCP associate member, teacher, and international speaker. When César is away from a computer, he enjoys spending time with his family, traveling and playing music with the Java Community Band, The Null Pointers. Follow Cesar on https://twitter.com/CesarHgt

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Emily Jiang

IBM, Cloud Native Architect and Chief Advocate
Emily Jiang is a Java Champion. She is Liberty Cloud Native Architect and Chief Advocate, Senior Technical Staff Member (STSM) in IBM, based at Hursley Lab in the UK. Emily is a MicroProfile guru and has been working on MicroProfile since 2016 and leads a number of specifications including MicroProfile Config and Fault Tolerance. She interacts with most of the other MicroProfile specifications. She is also active in Jakarta EE specifications. She is a co-lead in Jakarta Config and also a Jakarta Context and Dependency Injection (CDI) committer. At IBM, she leads the effort of implementing all of MicroProfile specifications on Open Liberty. She is passionate about MicroProfile and Jakarta EE. She regularly speaks at conferences, such as QCon, Code One, DevNexus, JAX London, Voxxed, Devoxx, EclipseCon, GeeCon, JFokus, etc.

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Gail Anderson

Anderson Software Group, Inc. Gail Anderson, Research Director, Anderson Software Group, Inc.
Gail C. Anderson is a Java Champion, Oracle Ace Member, and a past member of the NetBeans Dream Team. She is the Director of Research and founding member of the Anderson Software Group, a leading provider of training courses in Java, JavaFX, Python, Go, Modern C++, and Docker and Kubernetes. Gail enjoys researching and writing about leading-edge Java technologies. She is the co-author of nine textbooks on software programming, including "The Definitive Guide to Modern Java Clients with JavaFX 17", Second Edition. She also contributed to the book "97 Things Every Java Programmer Should Know!". Gail has conducted Technical Sessions and Hands-on Labs at Oracle Code One and JavaOne conferences in the USA, Europe, Asia, and Latin America. Gail has also presented sessions at Devoxx, Devnexus, and previous JChampions Conferences. For more information about Gail, visit asgteach.com, the Anderson Software Group on Facebook, and @gail_asgteach on Twitter.

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Grace Jansen

IBM, Developer Advocate
Grace is a Java Champion and Developer Advocate at IBM, working with Open Liberty, MicroProfile and Cloud Technologies. She has been with IBM since graduating from Exeter University with a Degree in Biology. Grace enjoys bringing a varied perspective to her projects and using her knowledge of biological systems to simplify complex software patterns and architectures. As a developer advocate, Grace builds POC’s, demos and sample applications, and writes guides and tutorials. She is a regular presenter at international technology conferences and has authored a book on reactive systems. Grace also has a keen passion for encouraging more women into STEM and especially Technology careers.

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Haim Yadid

Java Champion, VP of Technology@ Next Insurance
A software engineer with almost 30 years of experience in various technology fields: software development, team management, software architecture, HPC and algorithmic research. In my day job I am VP of technology in Next Insurance. Before that has been focusing for 8 years on Java platform performance optimization as an independent consultant and was involved in more than a dozen optimization projects. I am still passionate about scale and performance problems and even in my current position I am still a go to person for these topics. I am a Java Champion and one of the organizers of Java.IL, the Israeli Java user group.

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Heinz Kabutz

Heinz is the author of The Java Specialists’ Newsletter (https://www.javaspecialists.eu), a publication enjoyed by tens of thousands of Java experts in over 150 countries.

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Henri Tremblay

Head of Office, TS Imagine Canada
Henri Tremblay is a Java Champion. He leads EasyMock and Objenesis open source projects. When he was young, he made popular mocking classes, invented partial mocking, and was coding with pragmatism. The social side of him leads the Montréal JUG and Devoxx4kids Québec.
He has been a developer, CTO, software architect, enterprise architect, startup founder, teacher and performance expert. With pragmatism. He is currently Managing Director and Head of TS Imagine Canada.
He loves optimization and productivity. In Java and in general. He tries to be useful. He is pragmatic.

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Holly Cummins

Senior Principal Software Engineer, Red Hat
Holly Cummins is a Senior Principal Software Engineer on the Red Hat Quarkus team. Before joining Red Hat, Holly was a long time IBMer, in a range of roles from cloud consultant, full-stack javascript developer, WebSphere Liberty devops architect, JVM performance engineer, to innovation leader. Holly led projects for enormous banks, tiny startups, and everything in between. Holly has used the power of cloud to understand climate risks, count fish, help a blind athlete run ultra-marathons in the desert solo, and invent stories (although not at all the same time). Holly is also a Java Champion, author, and regular keynote speaker. You can follow her on twitter at @holly_cummins or at hollycummins.com.

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Ixchel Ruiz

Session: Maven Puzzlers

Ix-chel Ruiz has developed software application & tools since 2000. Her research interests include Java, dynamic languages, client-side technologies and testing. Java Champion, CDF Ambassador, hackergarten enthusiast, Open Source advocate, public speaker and mentor.

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Kirk Pepperdine

Microsoft Principal Engineer
Kirk has been speaking about performance for more than 20 years.

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María Arias de Reyna Dominguez

Senior software engineer at Red Hat
María Arias de Reyna is a Java Champion, geospatial enthusiast and FLOSS advocator. She has been a community leader and core maintainer of several free and open source projects since 2004. She is currently working at Red Hat where she focuses on Middleware and maintains Apache Camel and Syndesis. María is an experienced keynoter and speaker. Between 2017 and 2019 María was the elected President of OSGeo, the Open Source Geospatial Foundation which serves as an umbrella for the most used geospatial free and open source software. She is also well known as a feminist and Women In Tech activist.

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Mario Fusco

Red Hat
Mario Fusco is a Java Champion and works at Red Hat as principal software engineer and Drools project lead. He is also a frequent speaker, the coordinator of JUG Milano and the co-author of "Modern Java in Action" published by Manning.

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Mary Grygleski

Streaming Developer Advocate at DataStax, Java Champion, President of Chicago-JUG
Mary is a Java Champion and a passionate Senior Developer Advocate at DataStax, a leading data management company that champions Open Source software and specializes in Big Data, DB-as-a-service, Streaming, and Cloud-Native systems. She spent 3.5 years as a very effective advocate at IBM, focusing on Java, Jakarta EE, OpenJ9, Open Source, Cloud, and Distributed Systems. She transitioned from Unix/C to Java around 2000 and has never looked back since then. She considers herself a polyglot and loves to continue learning new and better ways to solve real-life problems. She is an active tech community builder outside of her day job, and currently the President of the Chicago Java Users Group (CJUG), as well as a co-organizer for several IBM-sponsored meetup groups in the Greater Chicago area.

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Mohamed Taman

Chief Solutions Architect @Effortel, Owner/CEO of SiriusXI, a Java Champion, Oracle ACE, JCP member , Consultant, Speaker & Author
Adopts Java SE.next(), JakartaEE.next(), a JCP member, Was JCP Executive Committee member, JSR 354, 363 & 377 Expert Group member, EGJUG leader, Oracle Egypt Architects Club board member, speaks Java, love Mobile, Big Data, Cloud, Blockchain, DevOps.
An International speaker, books & videos author of "JavaFX essentials," "Getting Started with Clean Code, Java SE 9", and "Hands-On Java 10 Programming with JShell", and a new book "Secrets of the Java Champion," Won Duke’s choice 2015, 2014, and 2013 awards, and JCP outstanding adopt-a-jar participant 2013 awards.

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Ondro Mihályi

Director at OmniFish
Ondro is a software developer and consultant specializing in combining standard and proven tools to solve new and challenging problems. He's been developing in Java for over 10 years. He’s worked for clients like Payara, LottoLand, Uniqa and others. He has co-founded OmniFish, where he works as a director and Jakarta EE expert. He’s passionate about helping his clients and the wider Java community with their projects based on Jakarta EE and similar technologies. As an experienced Java developer and instructor, he's helped companies build and educate their development teams and improve their development processes. He's a core member of several opensource projects and Jakarta EE specification projects. He’s a frequent conference speaker, leader of the Czech JUG and a Java Champion.

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Otavio Santana

Software Engineer & Architect and Open Source Committer
Empowering staff-plus engineers to deliver highly scalable software on the cloud lets them become influential in their companies and the market and move their technical careers to the next level. Otavio has contributed to the Java and the Open source ecosystem in several ways, such helped the direction and objectives of the Java platform since Java 8 as a JCP executive member, besides being a committer and leader in several open-source products, projects, and specifications. Otavio is recognized for his Open Source contributions and has received many awards, including all JCP Awards categories and the Duke’s Choice Award, to name a few. Otávio is also a distinguished member of the Java Champions and Oracle ACE programs. Otávio loves history, economy, traveling, programming, and real-world languages. He speaks Portuguese, English, Spanish, Italian, and French and is fluent in dad jokes.

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Paul Anderson

President, Anderson Software Group, Inc.
Paul L. Anderson is a Java Champion, Oracle Ace Member, and a past member of the NetBeans Dream Team. He is the Director of Training and co-founder of the Anderson Software Group, a leading provider of training courses in Java, JavaFX, Python, Go, Modern C++, and Docker and Kubernetes. He is also the co-author of nine textbooks on software programming, including the "The Definitive Guide to Modern Java Clients with JavaFX 17", Second Edition. Paul has conducted Technical Sessions and Hands-on Labs at Oracle Code One and JavaOne conferences in the USA, Europe, Asia, and Latin America. Paul has also presented sessions at Devoxx, Devnexus, and previous JChampions Conferences. For more information about Paul, visit asgteach.com, the Anderson Software Group on Facebook, and @paul_asgteach on Twitter.

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Peter Lawrey

13K answers for Java on Stackoverflow
Peter is the CEO of Chronicle Software, specialising in low-latency software for trading firms in Java and C++.

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Rafael del Nero

Java Champion
Rafael Del Nero is a Java Champion, creator of NoBugsProject and quiz master in Oracle Dev Gym, is the author of "No Bugs, No Stress - Create a Life-Changing Software Without Destroying Your Life." Rafael believes there are many techniques involved in creating high-quality software that developers are often unaware of. His life's purpose is to help Java developers use better programming practices to code quality software for stress-free projects with fewer bugs.

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Rustam Mehmandarov

Passionate computer scientist
Passionate computer scientist. Java Champion and Google Developers Expert for Cloud. Public speaker. Ex-leader of JavaZone and Norwegian JUG – javaBin.

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Sandra Parsick

Freelancer, Software Developer, Java Champion
Sandra Parsick is a Java Champion and works as a freelance software developer and consultant in the Java environment. She has been involved in agile software development in various roles since 2008. Her focus is on Java enterprise applications, cloud and the automation of software development processes. She enjoys writing articles about this and speaking at conferences. In her spare time, she is involved in various program committees and community groups.

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Sebastian Daschner

Java Champion
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 on https://blog.sebastian-daschner.com, in his newsletter, podcast, and videos, and on Twitter via @DaschnerS.

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Victor Orozco

CTO at Nabenik
Víctor Orozco holds a master in Computer Science by Universidade Federal de Santa Maria (Brazil) awarded with a scholarship from the Organization of American States.
JUG Leader of Guatemala Java Users group (the biggest IT user group in Central America) , Duke’s Choice Award 2016 winner and instructor on Edx micromasters.
"By day" he works as Java trainer and consultant for Nabenik with clients from the financial, government and banking sector, and is also a member of the computer science department at Universidad Rafael Landivar.

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