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 specialised 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

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. He is the creator of the AI Unified Process (AIUP) and a strong advocate of Spec-Driven Development.
As the owner of Martinelli LLC, he coaches teams to get up to speed with AI-driven development. He regularly shares his insights through international conferences, articles, and his blog, Keep IT Simple (https://martinelli.ch), where he writes about AI, architecture, and modern Java development.
He is also a lecturer at two universities in Switzerland, where he teaches software architecture, persistence, DevOps, and cloud-native development.

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. He is the creator of the AI Unified Process (AIUP) and a strong advocate of Sp... Show more

François Martin is a senior full-stack software engineer at Karakun AG in Switzerland, passionate about building high-quality applications. He co-authored the open-source JavaFX frameworks WorkbenchFX and PreferencesFX, and organizes Basel's Hackergarten to help developers get involved with open-source projects.

François is an Oracle ACE Associate and co-authored the ISTQB Test Analyst v4.0 syllabus. He is also part of the content committees for the BaselOne and DevBcn conferences.

François has given more than 65 talks, workshops, and mentoring sessions across 14 countries. He has spoken at major international conferences such as WeAreDevelopers World Congress, JavaZone, NDC Oslo, Jfokus, KCDC, Devnexus, and Devoxx Greece. He regularly shares practical insights to inspire developers and help teams build better software.

François Martin is a senior full-stack software engineer at Karakun AG in Switzerland, passionate about building high-quality applications. He co-authored the open-source JavaFX frameworks WorkbenchFX and PreferencesFX, and organizes Basel's Hackerga... Show more

Brian Vermeer is a Staff Developer Advocate at Snyk and a respected authority in Java and secure software development. He is an internationally recognized Java Champion and Oracle ACE Pro, honored for his outstanding contributions to Java and open source advocacy.
With over 15 years of hands-on software engineering experience, Brian specializes in Java, cybersecurity, and AI. He has authored numerous articles on this and has contributed to a wide range of open source projects within the ecosystem.
Brian is an active developer community leader, serving as a JUG leader for both the NLJUG and VirtualJUG, co-leading DevSecCon, and conference organizer for J-Fall and J-Spring. He is also a frequent speaker at leading international conferences, including JavaOne, Devoxx, and Devnexus.
Beyond his professional work in technology, Brian serves as a reservist in the Royal Netherlands Air Force in the rank of Captain and is a Taekwondo Master and instructor.

Brian Vermeer is a Staff Developer Advocate at Snyk and a respected authority in Java and secure software development. He is an internationally recognized Java Champion and Oracle ACE Pro, honored for his outstanding contributions to Java and open so... Show more

Richard Fichtner is the Principal Software Architect at XDEV Software GmbH, with over 20 years of experience in the software industry. He works at the intersection of business and technology and is a strong advocate for best practices in modern Java development. Richard is passionate about sharing knowledge on Java technologies, making him a frequent and highly rated conference speaker.

He is the founder and leader of the Java User Group Oberpfalz and co-organizes the JCON conferences. JCON EUROPE brings together the worldwide Java community from more than 60 countries.
Richard has been recognized as a Java Champion, Oracle ACE Pro, IBM Champion, and Vaadin Champion. With a Master of Science in Applied Computer Science, his expertise spans Java, clean code, pragmatic development practices, and European data privacy, helping organizations build modern, maintainable software.

In his spare time, Richard enjoys relaxing by a campfire and listening to or playing country music.

Richard Fichtner is the Principal Software Architect at XDEV Software GmbH, with over 20 years of experience in the software industry. He works at the intersection of business and technology and is a strong advocate for best practices in modern Java ... Show more

Ixchel Ruiz has been developing software applications and tools since 2000. Her research interests include Java, dynamic languages, client-side technologies, and testing. As a member of the JCP Executive Committee, Java Champion, Oracle ACE Pro, Testcontainers Community Champion, CDF Ambassador, Hackergarten enthusiast, Open Source advocate, public speaker, and mentor, Ixchel is deeply committed to fostering inclusive and collaborative tech communities. She actively mentors aspiring developers and champions initiatives aimed at increasing diversity and accessibility in the technology sector.

Ixchel’s work is characterised by a relentless pursuit of innovation, a deep understanding of user needs, and an unwavering commitment to ethical technology development.

Ixchel Ruiz has been developing software applications and tools since 2000. Her research interests include Java, dynamic languages, client-side technologies, and testing. As a member of the JCP Executive Committee, Java Champion, Oracle ACE Pro, Test... 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 database architect of Moovit, where he has been working since 2012.

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

Giliam Breems is a Senior Oracle APEX Consultant at Qualogy with more than 15 years of experience in the Oracle Database (SQL and PLSQL) and is now-a-days specialised in Oracle APEX. He became an Oracle ACE member in 2023, has been a member of the APEX World committee (nlOUG), organizes meetups for the company and is a speaker on national and international conferences (APEX World, HrOUG, POUG, DOAG, Kscope, OUGN, APEX Alpe Adria and the APEX Latinoamérica Tour).

Giliam Breems is a Senior Oracle APEX Consultant at Qualogy with more than 15 years of experience in the Oracle Database (SQL and PLSQL) and is now-a-days specialised in Oracle APEX. He became an Oracle ACE member in 2023, has been a member of the AP... Show more

Merlin is a software engineer, architect and Oracle ACE with over 10 years of experience in various domains and languages. As a migration engineer, he helps teams and individuals utilize new features and assists with migration. In addition to development, speaking at conferences and being a dad, he teaches people how to land gliders (yes, I'm a flight instructor!) and plays volleyball.

Merlin is a software engineer, architect and Oracle ACE with over 10 years of experience in various domains and languages. As a migration engineer, he helps teams and individuals utilize new features and assists with migration. In addition to develop... Show more

Biju Thomas is an Oracle ACE Director (since 2015) and a Cloud Technical Solutions Expert leading Data Intensity’s Digital Transformation practice. With a background spanning software development and enterprise database architecture, he brings a practitioner’s perspective to building scalable, production-ready cloud solutions.

Biju specializes in modern data platforms, cloud migrations, and multicloud architectures, helping organizations integrate robust data foundations with hyperscaler ecosystems such as Microsoft Azure. A long-time community contributor and frequent speaker, he focuses on practical patterns that bridge enterprise data platforms with modern AI and application development.

Learn more at www.bijoos.com
.

Biju Thomas is an Oracle ACE Director (since 2015) and a Cloud Technical Solutions Expert leading Data Intensity’s Digital Transformation practice. With a background spanning software development and enterprise database architecture, he brings a pr... Show more

International Speaker, JavaChampion, Cofounder of JBCNConf and DevBcn conferences in Barcelona, and AI4Devs conference in Amsterdam.

Currently working as a Staff Developer Advocate in Java at Sonar (SonarQube), focused on Code Quality, Dev Productivity, AI & Security.

I have worked as a (paid) developer for more than 30 years ago using multiple languajes, but for the last 15 using Java. Although I started when I was 14 with my Amstrad CPC 6128 :)

I am very interested in simulated reality, psychology, philosophy, and Java.

International Speaker, JavaChampion, Cofounder of JBCNConf and DevBcn conferences in Barcelona, and AI4Devs conference in Amsterdam. Currently working as a Staff Developer Advocate in Java at Sonar (SonarQube), focused on Code Quality, Dev Produc... Show more

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

Certified AI Wrangler, Oracle ACE Associate and passionate Java developer. Johannes builds modern applications with Vaadin, Spring, Quarkus, Kubernetes, and Langchain4j, often exploring AI integration. Public speaker, Live-Coder and open-source enthusiast. Proud husband and father of three.

Certified AI Wrangler, Oracle ACE Associate and passionate Java developer. Johannes builds modern applications with Vaadin, Spring, Quarkus, Kubernetes, and Langchain4j, often exploring AI integration. Public speaker, Live-Coder and open-source enthu... Show more

Andrej Pashchenko started his IT career in the early 1990s and has been working with Oracle Database since 1999. Over the past 15 years, he has focused on consulting, supporting customer projects in the areas of data warehousing, data modeling, ETL, and SQL performance. He has been actively sharing his knowledge since 2011 through blogging, speaking at international conferences, and teaching, helping others get the best out of Oracle Database. For his technical expertise and his long-standing commitment to knowledge sharing, Oracle has recognized him as an Oracle ACE Pro.

Andrej Pashchenko started his IT career in the early 1990s and has been working with Oracle Database since 1999. Over the past 15 years, he has focused on consulting, supporting customer projects in the areas of data warehousing, data modeling, ETL, ... Show more

Patrick Baumgartner is a Java Champion, passionate software crafter, and technical agile coach at 42talents. He helps teams build elegant, simple, and robust solutions, specializing in cloud software with Java, the Spring ecosystem, and other open-source technologies.

Patrick is an active member of the Software Craft, Java, and Agile communities in Switzerland. As a trainer and coach, he focuses on making a real impact by sharing knowledge, experimenting, and fostering continuous improvement. He enjoys learning with and from others.

Patrick Baumgartner is a Java Champion, passionate software crafter, and technical agile coach at 42talents. He helps teams build elegant, simple, and robust solutions, specializing in cloud software with Java, the Spring ecosystem, and other open-so... Show more

Since 2015, Maarten has taken the stage over 70 times at 40+ events across 20 countries, inspiring audiences with his practical insights and passion for technology.

His experience spans:
* Community-driven events: local meetups and Java User Groups;
* Top-tier international conferences: including JavaOne, Devnexus, JavaZone, multiple Devoxx editions, and J-Fall;
* Private engagements: in-house company events and guest lectures at both primary and professional education institutions.

Beyond speaking, Maarten actively shapes the developer and speaking communities. He spent three years on the J-Fall Program Committee, and now mentors upcoming speakers through the NLJUG Speaker Mentoring Programme and Info Support’s internal Speaking Community.

Since 2015, Maarten has taken the stage over 70 times at 40+ events across 20 countries, inspiring audiences with his practical insights and passion for technology. His experience spans: * Community-driven events: local meetups and Java User Gro... 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

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

Nicolas Fränkel is a technologist focusing on cloud-native technologies, DevOps, CI/CD pipelines, and system observability. His focus revolves around creating technical content, delivering talks, and engaging with developer communities to promote the adoption of modern software practices. With a strong background in software, he has worked extensively with the JVM, applying his expertise across various industries. In addition to his technical work, he is the author of several books and regularly shares insights through his blog and open-source contributions.

Nicolas Fränkel is a technologist focusing on cloud-native technologies, DevOps, CI/CD pipelines, and system observability. His focus revolves around creating technical content, delivering talks, and engaging with developer communities to promote the... Show more

Software engineer and team leader with more than a decade of experience in developing and maintaining web applications, with a particular focus on applications written in the Java ecosystem. Neither afraid of working on code, even on code that is already “legacy”, nor of designing a CI/CD processes that streamline development and deployment. Enthusiast of clean, straightforward code that solves business problems effectively, prioritizing readability and simplicity.

Software engineer and team leader with more than a decade of experience in developing and maintaining web applications, with a particular focus on applications written in the Java ecosystem. Neither afraid of working on code, even on code that is alr... Show more

Oracle ACE Associate and DBA Team Lead at Abakus Plus, where his team handles proactive maintenance of Oracle databases and their infrastructure.
Co-author of several commercial database tools including APPM (Oracle performance monitoring), Backup Server, and Deja Vu (test & dev provisioning).

On the open-source side, he is the author of DDLFS and ASMFS — two FUSE filesystems that expose Oracle internals as mountable Linux filesystems.

Oracle Certified Professional (DBA and Java SE), with additional certifications in Exadata and OCI.

Regular speaker at Oracle user group conferences in Europe.

Oracle ACE Associate and DBA Team Lead at Abakus Plus, where his team handles proactive maintenance of Oracle databases and their infrastructure. Co-author of several commercial database tools including APPM (Oracle performance monitoring), Backup ... Show more

A Data enthusiast more widely interested in Business Analytics/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 Business Analytics/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 ex... Show more

I assist developers in seizing their first opportunity! I am a Developer Advocate at ACT Digital, Founder, and Leader of the Quarkus Club community (https://discord.gg/48zt6R2sX4), a SouJava member, Speaker, and Event Organizer. I am also a Co-Founder of DevConverge LATAM, promoting integration among Java communities in Latin America. As an evangelist for the Quarkus framework.

I assist developers in seizing their first opportunity! I am a Developer Advocate at ACT Digital, Founder, and Leader of the Quarkus Club community (https://discord.gg/48zt6R2sX4), a SouJava member, Speaker, and Event Organizer. I am also a Co-Founde... 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 Nogueira is a distinguished software engineer specializing in Quality Engineering, delivering practical hands-on sessions on testing and development practices for backend, frontend, and mobile technologies using Java and open-source solutions.

As a Java Champion and Oracle ACE Pro, he actively contributes to the Java community, advocating for best practices and innovation in testing. As an editor for Java Magazine NL, he helps writers deliver the best content to readers in the Netherlands.

Elias Nogueira is a distinguished software engineer specializing in Quality Engineering, delivering practical hands-on sessions on testing and development practices for backend, frontend, and mobile technologies using Java and open-source solutions. ... 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 multiple 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

Nelson Calero is a senior data engineer with 20+ years of extensive experience in Oracle, PostgreSQL, Google Cloud, and other database technologies. A seasoned presenter and community leader, he shares his insight and expertise on database products at various events globally. Nelson works as a Principal Consultant for Pythian - as the last technical team escalation point handling the Pythian client's most challenging and serious database technical problems.

He is an Oracle ACE Director and Oracle Certified Professional, a member of the Board of the Latin American Oracle User Community (LAOUC), and a leader of the Uruguayan Oracle User Group (UYOUG).

Nelson Calero is a senior data engineer with 20+ years of extensive experience in Oracle, PostgreSQL, Google Cloud, and other database technologies. A seasoned presenter and community leader, he shares his insight and expertise on database products ... Show more

Software engineer with over 9 years of experience in Oracle technologies and software development. I began my career in infrastructure and middleware, specializing in high-availability environments, virtualization, security (SSL), and application servers. Since 2020, I have fully focused on software development, working with Java and Oracle APEX. In addition, I am co-founder of the Pura Vida JUG (Costa Rica Java User Group) and creator of the blog oracle-max.com, where I share knowledge with the community. My passion for continuous learning led me to become part of the Oracle ACE program as an Oracle ACE Pro, and I am always eager to explore new technologies, especially in the field of Al.

Software engineer with over 9 years of experience in Oracle technologies and software development. I began my career in infrastructure and middleware, specializing in high-availability environments, virtualization, security (SSL), and application ser... Show more

Niall McPhillips is an Oracle ACE Director and a member of Symposium 42. He has presented many times at international conferences on different subjects including the use of Oracle technologies including APEX, ORDS, PL/SQL, REST, JSON, Oracle Text, SODA, Multimedia as well as on his experiences with the implementation of large APEX projects.

He has been using Oracle since 1989, has been using Oracle PL/SQL Web technologies since 1995 and Oracle APEX since 2005.

Niall has developed many large, multilingual applications for multinational companies and organisations all over the world. He is a strong believer in PL/SQL and APEX solutions because of their stability, scalability, and rapid development speed.

Niall McPhillips is an Oracle ACE Director and a member of Symposium 42. He has presented many times at international conferences on different subjects including the use of Oracle technologies including APEX, ORDS, PL/SQL, REST, JSON, Oracle Text, S... 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