Markus is a Java Champion, former Java EE Expert Group member, founder of German JavaLand, reputed speaker at Java conferences around the world, and a very well known figure in the Enterprise Java world.

Markus is a Java Champion, former Java EE Expert Group member, founder of German JavaLand, reputed speaker at Java conferences around the world, and a very well known figure in the Enterprise Java world. Show more

ags likes distributed systems in all shapes and form. Coding since the age of 8, loves simplicity and continuous delivery. While he has written in many languages, he favours the JVM. Since "most software problems are people problems”, he stirs communities, organizes and speaks at conferences (proud to be a JavaONE Rockstar!). He is passionate about all things data, because science! In his spare time…cycling, photography and books. And he is a Java Champion!

ags likes distributed systems in all shapes and form. Coding since the age of 8, loves simplicity and continuous delivery. While he has written in many languages, he favours the JVM. Since "most software problems are people problems”, he stirs commun... Show more

Christopher Judd is CTO and partner at Manifest Solutions (http://www.manifestcorp.com), an international speaker, Java Champion, an open source evangelist, and the Central Ohio Java Users Group (http://www.cojug.org) leader.  He is an accomplished writer having co-authored Beginning Groovy and Grails (Apress, 2008), Enterprise Java Development on a Budget (Apress, 2003) and Pro Eclipse JST (Apress, 2005) as well as the author of the children’s book “Bearable Moments”.  Based in Columbus Ohio, he has spent over 20 years architecting and developing software for organizations ranging from Fortune 500 to start-ups across various industries including insurance, health care, education, retail, government, manufacturing, service, and transportation.  Mr. Judd spends most of his time consulting while continuing to focus on mentoring and training in Java, mobile and related technologies.

Christopher Judd is CTO and partner at Manifest Solutions (http://www.manifestcorp.com), an international speaker, Java Champion, an open source evangelist, and the Central Ohio Java Users Group (http://www.cojug.org) leader.  He is an accomplished w... Show more

Frank Delporte is a Java Champion working at azul.com, blogger on webtechie.be and foojay.io, author of "Getting started with Java on the Raspberry Pi" (webtechie.be/books), and contributor to pi4j.com. Frank blogs about his experiments with Java, sometimes combined with electronic components, on the Raspberry Pi.

Frank Delporte is a Java Champion working at azul.com, blogger on webtechie.be and foojay.io, author of "Getting started with Java on the Raspberry Pi" (webtechie.be/books), and contributor to pi4j.com. Frank blogs about his experiments with Java, so... Show more

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 leads the development of Kaoto, an Apache Camel low code and no code editor.

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.

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 M... Show more

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

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

Mark Heckler, MBA is a software developer & Principal Cloud Developer Advocate for Java/JVM Languages at Microsoft, conference speaker, Java Champion, and Kotlin Developer Expert focused on developing innovative production-ready software at velocity for cloud and edge computing platforms. He has worked with key players in numerous industries and public sector organizations to develop and deliver critical capabilities on time and on budget. Mark is an open source contributor and author of Spring Boot: Up and Running (https://bit.ly/springbootbook) and can be found on Twitter/X @mkheck.

Mark Heckler, MBA is a software developer & Principal Cloud Developer Advocate for Java/JVM Languages at Microsoft, conference speaker, Java Champion, and Kotlin Developer Expert focused on developing innovative production-ready software at velocity ... Show more

Dervis is an experienced Java-developer and principal officer, currently working for the Norwegian Labour and Welfare Administration. He is passionate about programming languages, functional programming and algorithms. Dervis is a Java Champion and the leader of the Norwegian JUG JavaBin (Dukes Choice Award winner in 2019). Dervis has spoken at several international conferences as well as being a regular speaker at local meetups in Norway.

Dervis is an experienced Java-developer and principal officer, currently working for the Norwegian Labour and Welfare Administration. He is passionate about programming languages, functional programming and algorithms. Dervis is a Java Champion and t... Show more

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 work 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.

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 work in Next Insurance. Before that has been focusing for... Show more

Michael Redlich has been an active member within the Java community for the past 25 years. He founded the Garden State Java User Group (formerly the ACGNJ Java Users Group) in 2001 where he serves as one of the directors. Since 2016, Mike has served as a Java community news editor for InfoQ where his contributions include the weekly Java news roundup, news items, technical articles and technical reviews from external authors. He is currently the lead Java Queue editor. Mike has joined Payara as a contract Developer Advocate and Technical Writer in the summer of 2023.

He has presented at venues such as Oracle Code One, JCON World, Emerging Technologies for the Enterprise, Trenton Computer Festival (TCF), TCF IT Professional Conference, and numerous Java User Groups. Mike serves as a committer on the Jakarta NoSQL and Jakarta Data specifications and the Eclipse JNoSQL project. He also participates on the leadership council of the Jakarta EE Ambassadors. Mike was named a Java Champion in April 2023.

Mike retired from ExxonMobil Technology & Engineering in June 2023 with 33½ years of service. His experience included developing custom scientific laboratory and web applications, polymer physics, chemometrics, infrared spectroscopy and automotive testing. He also has experience as a Technical Support Engineer at Ai-Logix, Inc. (now AudioCodes) where he provided technical support and developed telephony applications for customers.

Michael Redlich has been an active member within the Java community for the past 25 years. He founded the Garden State Java User Group (formerly the ACGNJ Java Users Group) in 2001 where he serves as one of the directors. Since 2016, Mike has served ... Show more

Craig Walls is an engineer with Broadcom, Java Champion, Alexa Champion, and the author of Spring in Action, Spring Boot in Action, and Build Talking Apps. He's a zealous promoter of the Spring Framework, speaking frequently at local user groups and conferences and writing about Spring, Alexa, and Generative AI. When he's not slinging code, Craig is planning his next trip to Disney World or Disneyland and spending as much time as he can with his wife, two daughters, 1 bird and 2 dogs.

Craig Walls is an engineer with Broadcom, Java Champion, Alexa Champion, and the author of Spring in Action, Spring Boot in Action, and Build Talking Apps. He's a zealous promoter of the Spring Framework, speaking frequently at local user groups and ... Show more

Jeanne Boyarsky is a Java Champion from New York City and has been a Java developer for more than 21 years. She has co-authored Wiley's Oracle Java 8 , 11, and 17 certification books. Jeanne volunteers at CodeRanch and mentors the programmers on a high school robotics team in her free time. She has spoken at numerous conferences including Dev Nexus, QCon, KCDC, and JavaOne.

Jeanne Boyarsky is a Java Champion from New York City and has been a Java developer for more than 21 years. She has co-authored Wiley's Oracle Java 8 , 11, and 17 certification books. Jeanne volunteers at CodeRanch and mentors the programmers on a hi... Show more

Gerrit Grunwald is a software engineer that loves coding for around 40 years already. He is a true believer in open source and has participated in popular projects like JFXtras.org as well as his own projects (TilesFX, Medusa, Enzo, SteelSeries Swing, SteelSeries Canvas). 
Gerrit blogs regularly at http://harmonic-code.org, he is an active member of the Java community, where he founded and leads the Java User Group Münster (Germany), he is a JavaOne rockstar and a Java Champion. He is a speaker at conferences and user groups internationally and writes for several magazines.

Gerrit Grunwald is a software engineer that loves coding for around 40 years already. He is a true believer in open source and has participated in popular projects like JFXtras.org as well as his own projects (TilesFX, Medusa, Enzo, SteelSeries Swing... Show more

Daniel Hinojosa is a programmer, consultant, instructor, speaker, and author. With over 20 years of experience, he does work for private, educational, and government institutions. Daniel loves JVM languages like Java, Groovy, and Scala; but also works with non-JVM languages like Haskell, Ruby, Python, LISP, C, C++. He is an avid Pomodoro Technique Practitioner and makes every attempt to learn a new programming language every year. Daniel is the author of Testing in Scala and the video of Beginning Scala Programming Video Series for O’Reilly Publishing. For downtime, he enjoys reading, swimming, Legos, football, and cooking.

Daniel Hinojosa is a programmer, consultant, instructor, speaker, and author. With over 20 years of experience, he does work for private, educational, and government institutions. Daniel loves JVM languages like Java, Groovy, and Scala; but also work... Show more

Jason is a Principal Software Engineer with Red Hat, where he works on the WildFly/EAP teams. He is responsible for several areas of the application server, including OpenTelemetry, Micrometer, Jakarta Faces, and Bean Validation. Prior to Red Hat, he worked at Oracle, NetSuite, and Sun Microsystems. With over 25 years of experience, he has worked with a number of programming languages (Java, Kotlin, C/C++, Javascript, and so on) in a variety of industries, with Java (and Java EE) being the primary focus for well over a decade and a half. He found Kotlin a few years ago, and has been trying to use it everywhere possible.

Jason blogs at https://jasondl.ee, and is the author of "Java 9 Programming Blueprints", has spoken at several conferences (including JavaOne, Devnexus, and JAXConf), and is the president of the Oklahoma City Java Users Group. On the personal side, he is active in his church, and enjoys playing bass guitar, running, fishing, and a variety of martial arts. He is also married to a beautiful woman, and has two boys, who, thankfully, look like their mother.

Jason is a Principal Software Engineer with Red Hat, where he works on the WildFly/EAP teams. He is responsible for several areas of the application server, including OpenTelemetry, Micrometer, Jakarta Faces, and Bean Validation. Prior to Red Hat, he... Show more

Developer, author, teacher. Forty years in computing. Co-author “Java Generics and Collections”, author “Mastering Lambdas”. Java Champion, JavaOne Rockstar, frequent conference speaker.

Developer, author, teacher. Forty years in computing. Co-author “Java Generics and Collections”, author “Mastering Lambdas”. Java Champion, JavaOne Rockstar, frequent conference speaker. Show more

Ken Kousen is the author of the Pragmatic Programmers books "Mockito Made Clear" and "Help Your Boss Help You", the O'Reilly books "Kotlin Cookbook", "Modern Java Recipes", and "Gradle Recipes for Android", and the Manning book "Making Java Groovy". He is a regular speaker on the No Fluff, Just Stuff conference tour, and has spoken at conferences all over the world. He is a Java Champion, a JavaOne Rock Star, and a Devnexus Rock Star.

In addition to various industry certifications, he has BS degrees in both Mathematics and Mechanical Engineering from M.I.T., an MA and Ph.D. in Aerospace Engineering from Princeton, and an MS in Computer Science from R.P.I.

Ken Kousen is the author of the Pragmatic Programmers books "Mockito Made Clear" and "Help Your Boss Help You", the O'Reilly books "Kotlin Cookbook", "Modern Java Recipes", and "Gradle Recipes for Android", and the Manning book "Making Java Groovy". ... Show more

Ian has worked in software for decades, working on too many different computer systems. He's developed apps for mobile health, business, and recreation. Author of O'Reilly Java Cookbook and Android Cookbook.

Ian has worked in software for decades, working on too many different computer systems. He's developed apps for mobile health, business, and recreation. Author of O'Reilly Java Cookbook and Android Cookbook. Show more

Edson Yanaga is a Java Champion and a former 7x Microsoft MVP. He is also a published author and a frequent speaker at international conferences, discussing Java, Kubernetes, Quarkus, Microservices, Cloud Computing, and DevOps.

Edson Yanaga is a Java Champion and a former 7x Microsoft MVP. He is also a published author and a frequent speaker at international conferences, discussing Java, Kubernetes, Quarkus, Microservices, Cloud Computing, and DevOps. Show more

Hello, I'm Jorge Vargas, a seasoned CTO with a proven record of launching successful products and enhancing user experiences. Over my career, I've led high-performing engineering and product teams that consistently met and exceeded our key objectives, all supported by meticulously defined OKRs. My core focus has always been on fostering cross-team collaboration to maximize efficiency and resource optimization.

My expertise extends to forging robust technological and business partnerships, ensuring the unwavering
reliability of our products. When it comes to technology and platform selection, I excel in finding the sweet spot between complexity and simplicity. I firmly believe that balancing scalability with operational growth is paramount. My holistic approach covers all critical facets of the organization, maintaining a 360-degree vision in all my strategic endeavors.

I'm deeply committed to propelling our company to new heights and staying on the cutting edge of
technological innovation. I eagerly anticipate the opportunity to collaborate and collectively elevate our
company's success to the next level.

Hello, I'm Jorge Vargas, a seasoned CTO with a proven record of launching successful products and enhancing user experiences. Over my career, I've led high-performing engineering and product teams that consistently met and exceeded our key objectives... Show more

Formerly the Diabolical Developer but am now much reformed :-).

Formerly the Diabolical Developer but am now much reformed :-). Show more

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.

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 ... Show more

Matt Raible is a well-known figure in the Java community and has been building web applications for most of his adult life. For over 20 years, he has helped developers learn and adopt open source frameworks and use them effectively. He's a web developer, Java Champion, and Developer Advocate at Okta.

Matt has been a speaker at many conferences worldwide, including Devoxx Belgium, Devoxx France, Jfokus, and JavaOne. He is the author of The JHipster Mini-Book, Spring Live, and contributed to Pro JSP. He is frequent contributor to open source and a member of the JHipster development team. You can find him online at https://raibledesigns.com and @mraible on Twitter.

Matt Raible is a well-known figure in the Java community and has been building web applications for most of his adult life. For over 20 years, he has helped developers learn and adopt open source frameworks and use them effectively. He's a web develo... Show more

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.

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, JV... Show more

Rodrigo Graciano is a Java Champion with over 15 years of software development experience and a Director at BNY Mellon. He is also a senior member and a leader in the NYJavaSIG, the Java User Group from NY. He is a frequent speaker at JUGs and conferences such as Devnexus, JavaOne, KCDC, and TDC Brazil.

Rodrigo Graciano is a Java Champion with over 15 years of software development experience and a Director at BNY Mellon. He is also a senior member and a leader in the NYJavaSIG, the Java User Group from NY. He is a frequent speaker at JUGs and confer... Show more

Miroslav Wengner is an engineer with a passion for resilient distributed systems and product quality. He is a co-author and contributor to the Robo4J project (a reactive soft real-time framework for robotics/IoT). Miro contributes to OpenJDK and participates in other open source technologies. He uses his passion for helping build resilient and scalable solutions.
Miro was selected for the Java Champions Program, recognized as a JavaOne Rockstar, and elected to the Java Community Process (JCP) as an Executive Member. Recently, Miro published his book Practical Design Patterns for Java Developers to help the community understand the benefits of new Java enhancements (https://amzn.eu/d/9ahtr3I).

In addition to his day-to-day duties as a principal engineer at OpenValue, he shares his knowledge at conferences (JavaOne, Devoxx, and so on) and in blogs. Miro believes in the Java ecosystem and helps move it forward!

Miroslav Wengner is an engineer with a passion for resilient distributed systems and product quality. He is a co-author and contributor to the Robo4J project (a reactive soft real-time framework for robotics/IoT). Miro contributes to OpenJDK and part... Show more

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. He evangelizes computer science practices on https://blog.sebastian-daschner.com, his newsletter, 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 to travel the world.

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 standardizati... Show more

Developer and Java Champion passionate by performance, runtimes (JVM, CLR) and Mechanical Sympathy supporter, Jean-Philippe has more than 8 years experience in low latency trading systems. After He brings his expertise on the JVM at Criteo in order to optimize resources on thousand node clusters, He has joined Datadog. He is also committer on the OpenJDK's project JDK Mission Control.

Developer and Java Champion passionate by performance, runtimes (JVM, CLR) and Mechanical Sympathy supporter, Jean-Philippe has more than 8 years experience in low latency trading systems. After He brings his expertise on the JVM at Criteo in order t... Show more

Alberto Salazar is an entrepreneur, passionate Consultant, Java Champion, Oracle Groundbreaker Ambassador, JUG Leader, Auth0 Ambassador, founder of the Ecuador Java User Group, Java Community Process Associate Member and Java evangelist/trainer. He is the co-author of the book 'Software Architecture with Spring 5.0'. Alberto has been working for 2 decades creating large scalable and high transaction load systems from military software to banking solutions. He is also a frequent speaker at Java conferences such as Oracle Code One, JBCNConf, Voxxed Days, Oracle Code, Red Hat Summit, JavaOne, Oracle Developer Tour Latam, OTN Tours, and local JUG meetings.

Alberto Salazar is an entrepreneur, passionate Consultant, Java Champion, Oracle Groundbreaker Ambassador, JUG Leader, Auth0 Ambassador, founder of the Ecuador Java User Group, Java Community Process Associate Member and Java evangelist/trainer. He i... Show more