Merlin is a Software Engineer, Architect and Oracle ACE with over 10 years of experience in different domains and languages. His main focus is Java Enterprise Applications with modern and Next-Generation Java. As a Migration Engineer, he helps teams and individuals utilize new features and supports them in migrating. Besides developing, speaking at conferences and his parental role, he tries to participate in community events, teach folk to land gliders (yes, I am a Flight Instructor!) and play volleyball.

Merlin is a Software Engineer, Architect and Oracle ACE with over 10 years of experience in different domains and languages. His main focus is Java Enterprise Applications with modern and Next-Generation Java. As a Migration Engineer, he helps teams ... Show more

Simon Martinelli is a Java Champion, Vaadin Champion, and Oracle ACE Pro, with over three decades of experience as a software architect, developer, consultant, and trainer. As the owner of Martinelli LLC, he specializes in optimizing full-stack development with Java and has a deep focus on modern architectures and distributed systems.

He frequently shares his expertise by speaking at international conferences, writing articles, and maintaining his blog: https://martinelli.ch.
His passion for teaching is reflected in his work as a lecturer at the Bern University of Applied Sciences BFH and the University of Applied Sciences Northwestern Switzerland FHNW, where he teaches courses on modern architecture, distributed systems, persistence technologies, and DevOps.

Simon Martinelli is a Java Champion, Vaadin Champion, and Oracle ACE Pro, with over three decades of experience as a software architect, developer, consultant, and trainer. As the owner of Martinelli LLC, he specializes in optimizing full-stack devel... Show more

Neil has been working in IT since 1988 when he coded Assembler and Cobol on IBM Mainframes against both hierarchical (NoSQL-ish) and relational databases. He started using Oracle software in 1991. Neil is an Oracle ACE Director and a founding member of the MASH Program. He likes to drink strong smooth Italian coffee, good beer and better whisky, depending upon the time of day.

Neil has been working in IT since 1988 when he coded Assembler and Cobol on IBM Mainframes against both hierarchical (NoSQL-ish) and relational databases. He started using Oracle software in 1991. Neil is an Oracle ACE Director and a founding member ... Show more

Elias is a Java Champion, Oracle ACE Pro, Java Magazine NL and Senior Principal Software Engineer at Backbase.

He shares content related to Java, OSS and Quality Engineering at conferences, meetups, articles and open-source conferences.

Elias is a Java Champion, Oracle ACE Pro, Java Magazine NL and Senior Principal Software Engineer at Backbase. He shares content related to Java, OSS and Quality Engineering at conferences, meetups, articles and open-source conferences. Show more

Oren Nakdimon is an Oracle ACE Director with 30+ years of extensive and continuous experience with Oracle-based systems, as a developer, DBA, manager and instructor. Oren gained lots of knowledge about databases in general, and Oracle in particular, and likes sharing it - by blogging, tweeting, presenting in local and international conferences, and more.
He is the VP of Databases at Moovit, where he has been working since 2012.
Oren has recently won the "UKOUG Best Tech International Speaker of the Year (2022) Award" and the "Top Speaker Award for the Core & Database track" at Kscope22.

Oren Nakdimon is an Oracle ACE Director with 30+ years of extensive and continuous experience with Oracle-based systems, as a developer, DBA, manager and instructor. Oren gained lots of knowledge about databases in general, and Oracle in particular, ... Show more

Kim Berg Hansen is a database developer from Middelfart in Denmark. Originally wanting to work with electronics, he almost coincidentally tried computer programming and discovered where his talent lay, as the programs he did worked well – unlike the electronics projects he soldered that often failed. After that experience he progressed from Commodore Basic on VIC-20 over Modula-2 and C at Odense University to Oracle SQL and PL/SQL, which last two languages he now has worked with extensively since the year 2000. His professional passion is to work with data inside the database utilizing the SQL language to the fullest to achieve the best application experience for the users.

Kim shares his experience and knowledge by writing the Practical Oracle SQL book, blogging, presenting at various Oracle User Group conferences, and being the SQL quizmaster at the Oracle Dev Gym. His motivation is when peers go "now I understand" after his explanations, or when end users "can't live without" his application coding. He is certified Oracle OCE in SQL as well as awarded Oracle ACE Director. Outside the coding world Kim is married, loves to cook, and is a card-carrying member of Danish Beer Enthusiasts association.

Kim Berg Hansen is a database developer from Middelfart in Denmark. Originally wanting to work with electronics, he almost coincidentally tried computer programming and discovered where his talent lay, as the programs he did worked well – unlike the ... Show more

Staff Developer Advocate for Snyk, Java Champion, Oracle Ace Pro, 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.

Staff Developer Advocate for Snyk, Java Champion, Oracle Ace Pro, 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. Bria... Show more

Patrick Baumgartner is a passionate software crafter, technical agile coach and trainer at 42talents. He works with people to create beautiful and simple solutions and enjoys building software for the cloud with Java, the Spring ecosystem, Neo4j and ElasticSearch and other open source technologies.

Learning new things from others and with others is something Patrick really enjoys. So he is actively involved in software craftsmanship, Java and Spring, and the agile community. He likes to make a difference, experiment and learn from and with others.

Patrick Baumgartner is a passionate software crafter, technical agile coach and trainer at 42talents. He works with people to create beautiful and simple solutions and enjoys building software for the cloud with Java, the Spring ecosystem, Neo4j and ... Show more

Richard Fichtner is Principal Software Architect at XDEV Software GmbH and has worked in the software industry for more than 20 years, often at the interface between business and technology. He is involved in the open-source community to spread knowledge about Java technologies. He speaks at conferences and contributes to various open-source projects such as https://www.rapidclipse.com/. Richard is a leader of the Java User Group Oberpfalz, Co-organizer of JCON conferences https://jcon.one/, recognized as Java Champion, Oracle ACE Pro, IBM Champion and holds a Master of Science degree in applied computer science. He is passionate about enabling developer productivity and supports teams in the use of cloud solutions. His interests are Java, clean code, cloud, new technologies and everything pragmatic.

Richard Fichtner is Principal Software Architect at XDEV Software GmbH and has worked in the software industry for more than 20 years, often at the interface between business and technology. He is involved in the open-source community to spread knowl... Show more

Ivar Grimstad is the Jakarta EE Developer Advocate at Eclipse Foundation. He is a Java Champion and JUG Leader based in Sweden.

Besides advocating the Jakarta EE technologies, Ivar is contributing to the Jakarta EE specifications as well as being the PMC Lead for Eclipse Enterprise for Java (EE4J). He is also one of the specification leads for Jakarta MVC and represents Eclipse Foundation on the JCP Executive Committee.

Ivar is also involved in a wide range of other open-source projects and communities. He is a frequent speaker at International developer conferences.

Ivar Grimstad is the Jakarta EE Developer Advocate at Eclipse Foundation. He is a Java Champion and JUG Leader based in Sweden. Besides advocating the Jakarta EE technologies, Ivar is contributing to the Jakarta EE specifications as well as being ... Show more

Ron Ekins is the Director of Field Solution Architecture for EMEA & LATAM at Pure Storage, where he serves as the primary technical advisor on data-related discussions. With over 30 years of experience in data management within highly regulated environments, Ron brings a wealth of expertise in the development, design, and delivery of complex information systems projects. His extensive background is complemented by his certifications as a Cloud and Enterprise Architect and his notable contributions to the field, including several US patents related to data security and governance.

An esteemed Oracle ACE Director, Ron is an active and influential member of the global Oracle community and has had the privilege of speaking at numerous prestigious industry conferences around the world.

Ron Ekins is the Director of Field Solution Architecture for EMEA & LATAM at Pure Storage, where he serves as the primary technical advisor on data-related discussions. With over 30 years of experience in data management within highly regulated envir... Show more

A Data enthusiast more widely interested in BA/DW/EPM solutions with a special focus on Oracle products and solutions.
Oracle ACE Director, owner of DATAlysis LLC, a consulting company in Switzerland, he has more than 15 years of experience in multiple project roles like architect, analyst, team lead and developer, bridging together the business and the technical side of the BA world.
His other activities include training delivery, R&D, blogging and supporting the Oracle community on the forums and by presenting at multiple events.

A Data enthusiast more widely interested in BA/DW/EPM solutions with a special focus on Oracle products and solutions. Oracle ACE Director, owner of DATAlysis LLC, a consulting company in Switzerland, he has more than 15 years of experience in mult... Show more

Richard Martens has been involved in information technology for more than 20 years. He started as a web developer using the Oracle database as no more than data storage. Richard has been responsible for major European multilingual websites and has been working with the Oracle database since 2000. During those years, he developed himself using a multitude of technologies and specialized in PL/SQL and Oracle APEX. Richard has been working primarily with PLSQL and APEX since 2005. With APEX, he combines the things he loves most: the Oracle database and web technologies.

Richard Martens has been involved in information technology for more than 20 years. He started as a web developer using the Oracle database as no more than data storage. Richard has been responsible for major European multilingual websites and has be... Show more

Andrej Pashchenko started his IT career in the early 1990s and has been working with Oracle Database since 1999 - the last 15 years as a consultant. He supports customer projects with a focus on data warehousing, data modeling, ETL and SQL performance. Andrej is sharing his knowledge and experience from customer projects on his blog, talking on various conferences and as a class instructor of Oracle New Features course.

Andrej Pashchenko started his IT career in the early 1990s and has been working with Oracle Database since 1999 - the last 15 years as a consultant. He supports customer projects with a focus on data warehousing, data modeling, ETL and SQL performanc... Show more

I’m a software developer at JPoint who loves to use and find new techniques and pragmatically apply them.

I’m a software developer at JPoint who loves to use and find new techniques and pragmatically apply them. Show more

Loiane Groner is a Java Champion, Angular GDE, Microsoft MVP, Oracle ACE with over 18 years of experience and a Director at BNY. In her spare time, she loves contributing to the community, and she publishes tech videos on Youtube and creates free programming courses at https://loiane.training.

Loiane Groner is a Java Champion, Angular GDE, Microsoft MVP, Oracle ACE with over 18 years of experience and a Director at BNY. In her spare time, she loves contributing to the community, and she publishes tech videos on Youtube and creates free pro... Show more

Erik van Roon is an Oracle Database Developer and Oracle ACE Pro, who has worked with Oracle technology since 1995, specializing in, but not limiting to, SQL and PLSQL.
Since 2009 he is self-employed. His company is called EvROCS.
Prior to that he has worked for several consulting companies in the Netherlands.
He has worked on major projects for several clients in industries like entertainment, banking and energy.
Erik has been the technical lead of multiple successful high impact data-migration projects moving and transforming large amounts of data.
He's been a speaker at many conferences in Europe and the United states.
He is a board member of community support program Symposium42 (https://sym42.org/), and is a co-founder and core-team alumni of the MASH program which mentors new speakers during their first steps as a public speaker (https://mashprogram.wordpress.com/).

Erik van Roon is an Oracle Database Developer and Oracle ACE Pro, who has worked with Oracle technology since 1995, specializing in, but not limiting to, SQL and PLSQL. Since 2009 he is self-employed. His company is called EvROCS. Prior to that ... Show more

Heli Helskyaho is the CEO for Miracle Finland Oy. Heli holds a Master’s degree (Computer Science) at the University of Helsinki and she is specialized on databases. At the moment she is working on her doctoral studies at the University of Helsinki. Heli has been working on IT since 1990. Heli is an Oracle ACE Director, and a frequent speaker in many conferences. She is the author of Oracle SQL Developer Data Modeler for Database Design Mastery (Oracle Press 2015) and a co-author of Real World SQL and PL/SQL: Advice from the Experts (Oracle Press 2016), Machine Learning for Oracle Database Professionals: Deploying Model-Driven Applications and Automation Pipelines (Apress 2021), and Extending Oracle Application Express with Oracle Cloud Features: A Guide to Enhancing APEX Web Applications with Cloud-Native and Machine Learning Technologies (Apress 2022).
Heli is also a Data Vault 2.0 Certified Practitioner and holds several certificates, especially on Oracle Technologies.

Heli Helskyaho is the CEO for Miracle Finland Oy. Heli holds a Master’s degree (Computer Science) at the University of Helsinki and she is specialized on databases. At the moment she is working on her doctoral studies at the University of Helsinki. ... Show more

Julian Frey is founder of CITE GmbH. During his more than 10 years of consulting he has gained a lot of experience in many areas, especially in the areas of HA, Engineered Systems and Monitoring. He is a frequent speaker and founder of the Oracle Beer Bern Meetup Group. Julian is a member of the Oracle ACE Program as an Oracle ACE Director.

Julian Frey is founder of CITE GmbH. During his more than 10 years of consulting he has gained a lot of experience in many areas, especially in the areas of HA, Engineered Systems and Monitoring. He is a frequent speaker and founder of the Oracle Bee... Show more

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

Ix-chel Ruiz has developed software application & tools since 2000. Her research interests include Java, dynamic languages, client-side technologies and testing. Java Champion, Oracle ACE pro, Testcontainers Community Champion, CDF Ambassador, Hacker... Show more

Gustavo is KNEX's CTO, leading the delivery and support organizations helping customers on their journey to the cloud. He is also an Oracle ACE Director since 2012.
He has delivered presentations at more than 200 conferences worldwide in more than 25 countries in North America, Europe, Latin America, and Asia.

Multiple events, including OOW, OCW, Collaborate, BluePrint4d, Ascend, KSCOPE and user group events, since 2006.

Gustavo is KNEX's CTO, leading the delivery and support organizations helping customers on their journey to the cloud. He is also an Oracle ACE Director since 2012. He has delivered presentations at more than 200 conferences worldwide in more than ... Show more

Piet is a Database Consultant and DBA.
He is in IT since 1987, and specialises in Oracle-, Postgres- and Databases-related technology since 1994. He combines conceptual knowledge and technical know-how with working-experience in small and large organisations, both local and international.

He also invests a lot of effort in maintaining a network of Like-Minded database-specialists worldwide and is a regular speaker at international user group events and symposia.

Piet likes to Travel, preferably by motorcycle, speaks various languages more or less acceptably, and is alway interested in learning how to say “Dober Dan” and “Hvala” in a few more languages (provided he can learn it on site).

Piet is a Database Consultant and DBA. He is in IT since 1987, and specialises in Oracle-, Postgres- and Databases-related technology since 1994. He combines conceptual knowledge and technical know-how with working-experience in small and large orga... Show more

Federico Venturin is an Oracle ACE Associate and a seasoned Oracle Analytics enthusiast with over 13 years of experience.

He has been speaking at major Oracle conferences (OUG Ireland, UKOUG, RMOUG, ODTUG Kscope), sharing insights and best practices. He maintains a technical blog with regular articles about Oracle Analytics, and actively contributes to Oracle community forums, providing solutions and guidance.

Outside of work, Federico likes to play videogames, travel all around the world and taste local food.

Federico Venturin is an Oracle ACE Associate and a seasoned Oracle Analytics enthusiast with over 13 years of experience. He has been speaking at major Oracle conferences (OUG Ireland, UKOUG, RMOUG, ODTUG Kscope), sharing insights and best practic... Show more

Oracle ACE with over 20 years of experience in Oracle and MySQL databases
Huawei Cloud’s Most Valuable Professional
Former database manager at IBM
Holder of more than 20 Oracle certifications
Inventor of two computer patents
Author of the book MySQL 8.0 Operations and Optimization (ISBN: 9787302602682)
Served over 20,000 database clients

Oracle ACE with over 20 years of experience in Oracle and MySQL databases Huawei Cloud’s Most Valuable Professional Former database manager at IBM Holder of more than 20 Oracle certifications Inventor of two computer patents Author of the book M... Show more

Øyvind Isene is an independent consultant living in Arendal, Norway. He works mainly with the Oracle database, both as a DBA and a developer. He started as an Oracle DBA in 1997 and has managed Oracle on a few Unix dialects, mostly on Linux. These days it is more about the data, how to explore them and making life easier for other people by doing the right things in the database. He enjoys analytics, performance optimisation, troubleshooting and helping developers get along with the database.

Øyvind Isene is an independent consultant living in Arendal, Norway. He works mainly with the Oracle database, both as a DBA and a developer. He started as an Oracle DBA in 1997 and has managed Oracle on a few Unix dialects, mostly on Linux. These ... Show more

Philipp Salvisberg is the owner of Grisselbav GmbH and an Oracle ACE Pro. He has been focusing on Oracle database-based solutions since 1988. At that time with Oracle Database version 5. Since then, he has been helping customers design, build and optimize their database-centric solutions, teaching application development topics or speaking at conferences. Software quality and automation are of great importance in this context.

Philipp has a soft spot for doing as much as possible in a single SQL statement and is interested in pretty much everything to use the database as efficiently as possible. He likes to design model-driven software solutions using domain-specific languages while getting the most out of the underlying technologies.

Philipp Salvisberg is the owner of Grisselbav GmbH and an Oracle ACE Pro. He has been focusing on Oracle database-based solutions since 1988. At that time with Oracle Database version 5. Since then, he has been helping customers design, build and opt... 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 Senior Engineer at CrowdStrike.

Matt has spoken at many conferences worldwide, including Devoxx Belgium, Devoxx France, Jfokus, and JavaOne. He is the author of The JHipster Mini-Book and Spring Live and contributed to Pro JSP. He is a 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

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

CEO of JomaSoft (Oracle Gold Partner)
Providing SPARC/Solaris Consulting/Services and Products since 25 years.
Speaker at Oracle/Solaris User Groups, Events and Meetups worldwide.

Expertise: SPARC/x86 Server, Solaris, Datacenter, Network, Storage, ZFS, LDoms

Marcel lives in Switzerland/Europe

CEO of JomaSoft (Oracle Gold Partner) Providing SPARC/Solaris Consulting/Services and Products since 25 years. Speaker at Oracle/Solaris User Groups, Events and Meetups worldwide. Expertise: SPARC/x86 Server, Solaris, Datacenter, Network, Stora... Show more

Benjamin has a long-term and hands-on experience with introducing, building, running, coaching and speaking about Java, Microservices (including DDD and events), Docker/Containerization, distributed/self-contained systems (SCS) and disruptive technologies.

At day he works as Tech Lead for Cloud Technologies at codecentric. At night he hacks on innovative trends like FaaS, Service Meshes, Voice UIs and IoT. At evenings he organizes workshops, talks and code retreats at the Software Crafters Community Jena (Softwerkskammer Jena) and the Java User Group Thüringen. On weekends he serves as a board member at the Java Aktuell Magazine and at the JavaLand conference – leading the Architecture and Methodology & Culture streams.

He also runs Open Data Hackathons as well as Devoxx4Kids events. Regularly he also gives university lectures on OOP, Java, Docker, Git, Project Management and Agile Methodologies. In his leisure time he enjoys road cycling, art & theaters, wine/gin/whiskey tastings and discussions about politics and improving IT organizations.

Benjamin has a long-term and hands-on experience with introducing, building, running, coaching and speaking about Java, Microservices (including DDD and events), Docker/Containerization, distributed/self-contained systems (SCS) and disruptive technol... Show more