Speakers
  • Adele Carpenter

    Software engineer and aviation enthusiast

    Adele is a software engineer at Trifork Amsterdam, where she is working on backend systems for the educational sector. Most of her work day is spent in the JVM/Spring ecosystems. Adele got the coding bug later in life but since then has been making up for lost time, going from command line noob to employed software engineer in just one year. Her experiences both in and out of tech have given her a unique perspective on the art of programming together with humans, which she hopes is useful to other humans who program with humans.

  • Aleks Seovic

    Architect, Oracle Coherence

    Aleks Seović is an architect at Oracle where he works on Oracle Coherence—a leading in-memory data grid product—and contributes to the Helidon microservices framework.

    Most recently, Aleks led the design and implementation of the gRPC framework, CDI, and Eclipse MicroProfile support in Oracle Coherence. He currently leads the implementation of Oracle Coherence native clients, GraphQL support, and Helidon, Micronaut and Spring integration.

  • Alex Lakatos 🇬🇧

    Developer Relations

    Alex Lakatos is a Developer Relations Manager for Fidel. In his spare time, he is a Mozilla Tech Speaker and has been a contributor to the Mozilla project for the past nine years, based in the UK. JavaScript developer building on the open web, he has been pushing its boundaries every day. You can check out his GitHub profile or get in touch on Twitter. When he’s not programming, ~he likes to travel the world, so it’s likely you’ll bump into him in an airport lounge~ he's trapped in the house, the same as everyone else.

  • Andres Almiray

    Seasoned Sourceror

    Andres is a Java/Groovy developer and a Java Champion with more than 20 years of experience in software design and development. He has been involved in web and desktop application development since the early days of Java. Andres is a true believer in open source and has participated on popular projects like Groovy, Griffon, and DbUnit, as well as starting his own projects (Json-lib, EZMorph, GraphicsBuilder, JideBuilder). Founding member of the Griffon framework and Hackergarten community event. You can find him on twitter too as @aalmiray. He likes to spend time with his beloved wife, Ixchel, when not hacking around.

  • Antoine CRASKE

    Head of Architecture & Technology, La Redoute

    Antoine Craske is passionate about strategy, innovation, technology, organization and systems. Head of Architecture & Technology at La Redoute, international e-commerce player. Tech Community organizer of TICE.Leiria, AKUG and QE Unit, active in open-source.

  • Antón Rodríguez

    Principal Software Engineer

    Antón is Principal Software Engineer focused on Data Streaming and Stream Processing. He has experience working with different message brokers, event streaming platforms and stream processing frameworks. During his career, he specialized in building internal SaaS in big corporations to make complex technologies easily used and adopted by teams so they can build solutions to real business use cases. From the very beginning, Antón can help with governance, performance, adoption, training and any task related to system administration or backend development.

  • Baruch Sadogursky

    Head of DevOps Advocacy @jfrog

    Baruch Sadogursky (a.k.a JBaruch) is the Head of DevOps Advocacy and a Developer Advocate at JFrog. His passion is speaking about technology. Well, speaking in general, but doing it about technology makes him look smart, and 19 years of hi-tech experience sure helps. When he’s not on stage (or on a plane to get there), he learns about technology, people and how they work, or more precisely, don’t work together.

    He is a co-author of the Liquid Software book, a CNCF ambassador and a passionate conference speaker on DevOps, DevSecOps, digital transformation, containers and cloud-native, artifact management and other topics, and is a regular at the industry’s most prestigious events including KubeCon, DockerCon, Devoxx, DevOps Days, OSCON, Qcon, JavaOne and many others. You can see some of his talks at jfrog.com/shownotes

  • Brian Vermeer

    Developer advocate @ Snyk

    Developer Advocate for Snyk, Java Champion, and Software Engineer with over a decade of hands-on experience in creating and maintaining software. He is passionate about Java, (Pure) Functional Programming, and Cybersecurity. Brian is a JUG leader for the Virtual JUG and the NLJUG. He also co-leads the DevSecCon community and is a community manager for Foojay. He is a regular international speaker on mostly Java-related conferences like JavaOne, Devnexus, Devoxx, Jfokus, JavaZone, and many more. Besides all that, Brian is a military reserve for the Royal Netherlands Air Force and a Taekwondo Master / Teacher.

  • Bruno Freitas

    IT DevOps Director at Unilabs Portugal

    Enthusiastic software engineer with years of experience in Java development applied in healthcare systems working closely with multiple partners, resolving key business critical issues.

  • Charlotte Mach

    Engineering Manager @ Container Solutions

    Charlotte is currently an Engineering Manager at Container Solutions, working on projects using Kubernetes, various CI/CD tools and helping companies to be more cloud native while also managing a team of engineers.
    After trying out various tech jobs during her studies, which got her a Master’s degree in Computer Science and a love-hate relationship with debugging, she moved on to work with Oracle Cloud in the Netherlands before joining CS. Both at work and outside of it Charlotte is passionate about learning and bad jokes.

  • Chiamaka Okenwa

    Software Engineer

    Chiamaka Okenwa is a software engineer with a demonstrated history of working in the fin-tech space with a focus on product design and development. She is passionate about Java, women in technology and developer communities, serving as an International speaker and community organizer of unStack Africa and JVM Nigeria. Chiamaka enjoys speaking at events, such as java2Days, Github Africa meetup, London Java Community (LJC) meetup and the Tech(K)nowDay Conference.

  • Daniel Kim

    Senior Developer Relations Engineer, New Relic + President, Bit Project

    Daniel Kim (He/Him) is a Senior Developer Relations Engineer at New Relic and the founder of Bit Project, a 501(c)(3) nonprofit dedicated make tech accessible to underserved communities. He wants to inspire generations of students in tech to be the best they can be through inclusive, accessible developer education. He is passionate about diversity & inclusion in tech, good food, and dad jokes.

  • Dmitry Alexandrov ✈️

    Senior Principle Developer

    Dmitry is a Senior Principle Developer at Oracle, Java Champion, Oracle Dev Champion. He has more than a decade experience mainly in Java Enterprise in banking/telecom, but interested in dynamic languages on JVM and features like massive computations on GPUs. A true believer in open source and community driven initiatives. He is a co-lead of the Bulgarian Java User Group and co-organizer of jPrime Conf.
    Dmitry is a blogger and also a frequent speaker at local events as well as conferences like JavaOne, Devoxx/Voxxed and Joker/JPoint.

  • Elder Moraes

    Developer Advocate, Red Hat

    Elder helps Java developers to work on great projects by guiding them on how to build and deliver fast and available server-side applications. He is a Java Champion, the author of the “Jakarta EE Cookbook“, and a board member at SouJava, one of the biggest JUGs in the world. As a Developer Advocate, Elder shares experiences and best practices through online content and at international events like JavaOne, The Developers Conference, QCon, Oracle Code One, Campus Party, and Devnexus.

  • Eugenia Zigisova

    Raisin, Software Engineer

    Eugenia is a web developer with experience working at such fintech startups as Raisin and N26. She is a web performance ambassador at work and a passionate hiker, nature, and sauna lover. Also, she has been an active tech community member since 2016 when she founded a Google Developer Group in Latvia and became a Women Techmakers Lead.

  • Fabio Tiriticco

    Reactive Architect | Tech Lead | Speaker & Community Manager | Bicycle & Bass Lines

    Fabio is a software engineer, conference speaker, and community leader based in Amsterdam. While building his own start up, he fell in love with Akka, Scala, and Reactive systems, so much so that he founded the 2000-member strong Reactive Amsterdam meet up group. When not in front of a screen, he enjoys long distance bike rides and fingerpicking his guitar.

  • Grace Jansen

    IBM, Developer Advocate

    Grace is a Developer Advocate at IBM, working with Open Liberty and Reactive Platform. 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 presentor at international technology conferences and has recently authored a book on reactive systems. Grace also has a keen passion for encouraging more women into STEM and especially Technology careers.

  • Graeme Rocher

    Architect Oracle Labs

    Graeme Rocher is the creator of several popular Open Source projects including Grails (https://grails.org) and Micronaut (https://Micronaut.io) and co-author of "The Definitive Guide to Grails" (Apress - http://apress.com/book/view/1590599950). Graeme currently works as an Architect at Oracle. Graeme is a member of the Java Champions (https://twitter.com/java_champions) and 2018 was awarded the Groundbreaker award by Oracle (https://developer.oracle.com/groundbreakers/) for his work on Open Source.

  • Guillaume Laforge

    Developer Advocate for Google Cloud

    Guillaume Laforge is Developer Advocate for Google Cloud. He focuses on serverless technologies. He is also a Java Champion, and the co-founder of the Apache Groovy programming language.

  • Guy Royse

    Developer Advocate at Redis Labs

    Guy works for Redis Labs as a Developer Advocate. Combining his decades of experience in writing software with a passion for sharing what he has learned, Guy goes out into developer communities and helps others build great software.

    Teaching and community have long been a focus for Guy. He is President of the Columbus JavaScript Users Group, an organizer for the Columbus Machine Learners, and has even has helped teach programming at a prison in central Ohio.

    In his personal life, Guy is a hard-boiled geek interested in role-playing games, science fiction, and technology. He also has a slightly less geeky interest in history and linguistics. In his spare time, he volunteers for his local Cub Scout Pack, goes camping, and studies history and linguistics.

    Guy lives in Ohio with his wife, his three teenage sons, and an entire wall of games.

  • Ivan SANTOS

    La Redoute, Tech Lead DevOps

    Passionate about working with innovative technologies, mainly with DevOps and SRE, for 21 years taking knowledge and learning about critical environments and e-commerce. Traveller, funny, black belt in Judo, surfer and starting a relationship with racquet sport Padel.

  • Jayashree S Kumar

    Staff software Engineer at IBM's India Software Labs

    An IBM-Java Classes Library developer at IBM India's Software Labs. Current efforts are focused on fixing customer reported issues and security gaps on IBM Java Runtime. In a career spanning over 9 years, I extensively worked on IBM JDK’s Testing. Likes to write up know-hows focusing on What? Why? Where? n When?s. After dabbling with writing disclosures, is Evaluator at IBM’s Cloud Invention development team. Speaker at international conferences. In free time likes to browse, when not running behind her toddler.

  • Johan Janssen

    Software architect at Sanoma Learning

    Johan is working as a software architect at Sanoma Learning. He has been working for various demanding companies where rapidly delivering high-quality software was very important. Johan regularly writes articles and presents about various subjects, but mainly around Java. He spoke in 20 countries at more than 40 different conferences such as JavaOne, GOTO Amsterdam/Berlin/Copenhagen, Devoxx BE/UK/PL, JavaZone, J-Fall, Jfokus, JavaLand, Scala Days Berlin/New York. Johan received the JavaOne Rock Star and Oracle Code One Star awards.

  • Jonathan Vila

    Java Champion, Engineer at Red Hat

    Java Champion, Organiser at BarcelonaJUG and cofounder of the JBCNConf conference in Barcelona.
    Working at Red Hat as Senior Software Engineer on the Middleware area, but I have worked as a (paid) developer since the first release of The Secret of Monkey Island, about 30 years ago. PMP certified by the PMI in Project Management.
    Speaker at OracleCodeOne, DevNexus, DevConf.US, JConf Mexico, JConf Peru, VirtualJUG and other JUGs around the world.
    Very interested in simulated reality, psychology and Java along with management technologies.

  • José Paumard

    Java Champion, JavaOne Rockstar

    Passionate about programming computers for over 25 years, Jose made his debut in assembler and C, C for SIMD parallel machines before adopting Java as an object-oriented language. PhD in applied maths and computer science, assistant professor at the University Sorbonne Paris Nord for 25 years, Java Champion, JavaOne Rockstar, Jose also has a passion for education. He gives talks in major international Java conferences (JavaOne, Oracle CodeOne, Devoxx in Antwerp, Paris and London, DevNexus, GoTo). He wrote numerous technical articles on Java technologies for Java Magazine, Oracle Technolgy Network among other publication. He writes a blog, Java le soir, French documentary source on Java technologies for thousands of french speaking developers around the world. He is a member of the french Paris Java User Group, has been a co-organizer of the conference Devoxx France for three years, and disorganizer of JChateau, an unconference held in the Chateau of the Loire Valley. He maintains a french YouTube channel with more than 80 hours of Java courses. He is also a Pluralsight author in the Java space.

  • Kathryn Kodama

    Developer at IBM, Open Liberty Developer Experience Team

    Kathryn is a software developer on the Open Liberty Developer Experience team at IBM Canada. She has contributed to a number of open-source projects within the MicroProfile and Jakarta EE community, such as the Language Server for MicroProfile, the Jakarta EE Language Server, and the MicroProfile Starter for VS Code. Kathryn has also contributed to the development of dev mode for Open Liberty, and corresponding editor plugins.

  • 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.

  • Mark Heckler

    Sultan of Spring

    Mark Heckler is a Professional Problem Solver and Spring Developer & Advocate at Pivotal, conference speaker, published author, & Java Champion focusing upon developing innovative production-ready software at velocity for the Cloud and IoT applications. He has worked with key players in the manufacturing, retail, medical, scientific, telecom, and financial industries and various public sector organizations to develop and deliver critical capabilities on time and on budget. Mark is an open source contributor and author/curator of a developer-focused blog (https://www.thehecklers.com) and an occasionally interesting Twitter account (@mkheck).

  • Mary Grygleski

    Senior Developer Advocate at IBM and President of Chicago-JUG

    Mary is a Senior Developer Advocate with the Websphere/Liberty technology team at IBM, with a focus on Liberty, MicroProfile, Reactive Java, Open Source, Cloud, and Enterprise Distributed Systems. She started working as a software engineer with C and Unix, then got into Java, Open Source, and web development in the new Millennium, and now she has ventured into Reactive, Mobile, and the DevOps space. In her previous incarnations, she worked for several technology product companies in the Route 128 Boston Technology Corridor as well the San Francisco Bay Area. She now resides in the Greater Chicago area, and is the President and Executive Board Member of the Chicago Java Users Group (CJUG). She is also an active co-organizers for the Data, Cloud and AI In Chicago, Chicago Cloud, and IBM Cloud Chicago meetup groups. Mary continues to be amazed by how software innovations can dramatically transform our lives. Despite the many challenges in an ever-evolving technical world, she gets energized by the constant change and believes that she has uncovered the pathway to staying young. She can’t wait to see what the next tech wave will be like.

  • Maurice Naftalin

    Grand Poobah, Morningside Light Ltd.

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

  • Mete Atamel

    Developer Advocate at Google

    I'm a Developer Advocate at Google, currently focused on helping developers with Google Cloud Platform. As a long-time Java and a recent C# developer, I like to compare the two ecosystems. Prior to Google, I worked at Microsoft, Skype, Adobe, EMC, and Nokia building apps and services on various web, mobile and cloud platforms. Originally from Cyprus, I currently live in Greenwich, not too far away from the prime meridian.

  • Mikhail Kuznetcov

    Chapter lead, developer at ING

    Fullstack dev with diverse experience in frontend ecosystem

  • Mohamed Taman

    Chief Solutions Architect @Effortel, Owner/CEO of SiriusXI, a Java Champion, Oracle Groundbreaker Ambassador, 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.

  • Nathaniel Schutta

    Architect as a Service

    Nathaniel T. Schutta is a software architect focused on cloud computing and building usable applications. A proponent of polyglot programming, Nate has written multiple books and appeared in various videos. Nate is a seasoned speaker regularly presenting at conferences worldwide, No Fluff Just Stuff symposia, meetups, universities, and user groups. In addition to his day job, Nate is an adjunct professor at the University of Minnesota where he teaches students to embrace (and evaluate) technical change. Driven to rid the world of bad presentations, Nate coauthored the book Presentation Patterns with Neal Ford and Matthew McCullough. Nate recently published Thinking Architecturally and Responsible Microservices both available as free downloads from VMware.

  • Nicolas Fränkel

    Developer Advocate @ Hazelcast

    Developer Advocate with 15+ years experience consulting for many different customers, in a wide range of contexts (such as telecoms, banking, insurances, large retail and public sector). Usually working on Java/Java EE and Spring technologies, but with focused interests like Rich Internet Applications, Testing, CI/CD and DevOps. Currently working for Hazelcast. Also double as a trainer and triples as a book author.

  • Reza Rahman

    Principal Program Manager, Java on Azure at Microsoft

    Reza Rahman is Principal Program Manager for Java on Azure at Microsoft. He works to make sure Java developers are first class citizens at Microsoft and Microsoft is a first class citizen of the Java ecosystem.

    Reza has been an official Java technologist at Oracle. He is the author of the popular book EJB 3 in Action from Manning Publishing. Reza has long been a frequent speaker at Java User Groups and conferences worldwide including JavaOne and Devoxx. He has been the lead for the Java EE track at JavaOne as well as a JavaOne Rock Star Speaker award recipient. He was the program chair for the inaugural JakartaOne conference. Reza is an avid contributor to industry journals like JavaLobby/DZone and TheServerSide. He has been a member of the Java EE, EJB and JMS expert groups over the years. Reza implemented the EJB container for the Resin open source Java EE application server. He helps lead the Philadelphia Java User Group. Reza is proud to be a founding member of the Jakarta EE Ambassadors.

  • Rob Richardson

    @rob_rich

    Rob Richardson is a software craftsman building web properties in ASP.NET and Node, React and Vue. He’s a Microsoft MVP, published author, frequent speaker at conferences, user groups, and community events, and a diligent teacher and student of high quality software development. You can find this and other talks at https://robrich.org/presentations and follow him on twitter at @rob_rich.

  • Roberto Cortez

    Senior Software Engineer @ Redhat

    Roberto Cortez is a passionate Java Developer with more than 10 years of experience. He is involved within the Open Source Community to help other individuals spread the knowledge about Java technologies. He is a regular speaker at conferences like JavaOne, Devoxx, Devnexus, JFokus and others. He leads the Coimbra JUG and founded the JNation Conference in Portugal. When he is not working, he hangs out with friends, play computer games and spends time with family.

  • Roy Braam

    Founder @OpenValue Amsterdam. Software Developer/Architect @JPoint

    Roy Braam is founder of OpenValue Amsterdam and Developer/Architect at JPoint. He loves Java, DevOps, and everything that comes with developing good solutions and teams.

  • Sven Ruppert

    Developer Advocate at JFrog

    Sven Ruppert has been coding Java since 1996 in industrial projects, is working as Developer Advocate for JFrog and Groundbreaker Ambassador (former Oracle Developer Champion). He is regularly speaking at Conferences worldwide and contributes to IT periodicals, as well as tech portals.
    He was working over 15 years as a consultant worldwide in industries like Automotive, Space, Insurance, Banking, UN and WorldBank. Additional to his main topic DevSecOps he is working on Mutation Testing of Web apps and Distributed UnitTesting besides his evergreen topics Core Java and Kotlin.

  • Tom Granot

    Solution Engineer at Lightrun

    Tom is a solution engineer at Lightrun, where he works on re-shaping what production observability looks like. Tom was previously a site reliability engineer for a distributed systems startup, teaches technological prototyping for creatives at a local college's media lab, and is an avid explainer of all things tech.

    You can follow him @TomGranot on Twitter.

  • Victor Rentea

    Java Champion and Trainer

    Victor is a Java Champion and an Independent Trainer delivering intense webinars for dozens of companies worldwide. He loves Simple Design, Refactoring, and Unit Testing, about which he regularly talks at top conferences, but also to the Bucharest Software Craftsmanship Community that he founded. On victorrentea.ro you can find his blog, talks, training curriculum, live masterclasses, and social channels.

  • YK Chang

    Developer, Developer Advocate, Architect, IBMer

    Yee-Kang (YK) Chang is the lead developer advocate for IBM's application platform and the developer experience architect for Open Liberty. He contributes to various open source projects like Eclipse Language Servers for MicroProfile & Jakarta EE and Open Liberty and is keen on how we can make life easier for developers.

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