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

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

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

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 an active member of the Swiss Testing Board and ISTQB's Advanced and Expert Working Group, co-authoring the ISTQB Test Analyst v4.0 and the upcoming Security Test Analyst syllabus. He is also part of the content committee for the BaselOne conference.

François regularly speaks at international conferences, sharing insights to inspire developers and improve software quality.

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

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, contributing to the open-source community through projects like RapidClipse (https://www.rapidclipse.com) and advocating for best practices in Apache Maven. Richard is passionate about sharing knowledge on Java technologies, making him a frequent conference speaker.

He leads the Java User Group Oberpfalz, co-organizes the JCON conferences (https://jcon.one), and 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, cloud technologies, and pragmatic development practices, focusing on improving developer productivity through cloud solutions.

Richard enjoys relaxing by a campfire and listening to/playing country music in his spare time.

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, contributing to the open-source community through projects... 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

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 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 Java Champion, Oracle ACE Pro, Testcontainers Community Champion, CDF Amba... 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 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.
As the owner of Martinelli LLC, he specializes in optimizing full-stack development with Java using AI and has a deep focus on modern architectures and software modernization.
He frequently shares his expertise by speaking at international conferences, writing articles, and maintaining his blog, Keep IT Simple: https://martinelli.ch.
His passion for teaching is reflected in his work as a lecturer at two universities in Switzerland.

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 dev... 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

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

Being in IT business as a specialist for Linux, Martin Klier has been involved in the administration of Oracle Databases for about twenty years now. The integration of large Oracle-based high-availability solutions (MAA) with RAC and Data Guard were the first challenges. In the last years, he largely moved into performance analysis and tuning of complex systems with dynamically changing load profiles.
Skeptical needs assessments, thorough architecture planning, decent system sizing, critical benchmarking and experienced load-focused system analysis are Martin’s formula to success in avoiding production downtime.
For years now, Martin can be found speaking on topics regarding “Oracle Core, Performance and High Availability” on various national and international conferences, like COLLABROATE (IOUG), Oracle Cloud World, UTOUG, ECO, POUG or DOAG Konferenz.
Martin frequently blogs about recent issues and their solutions at http://www.usn-it.de and is known on BlueSky as @MartinKlierDBA.
Martin works a lot for the community, especially for the German Oracle Database Community “ora2know”, the Linux User Group Mitterteich, is an Oracle ACE Director (Database) and proud member of Symposium42.

Being in IT business as a specialist for Linux, Martin Klier has been involved in the administration of Oracle Databases for about twenty years now. The integration of large Oracle-based high-availability solutions (MAA) with RAC and Data Guard were ... 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

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

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

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

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

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

Louis Moreaux began his Oracle journey with the database in 2013, before discovering Oracle APEX in 2017. Today, he is a senior Oracle APEX developer and Tech Lead at Talan (formerly Insum Solutions), specializing in the creation of custom low-code applications.

An Oracle ACE Pro, Louis actively contributes to the Oracle APEX community through open-source projects such as Flows for APEX and the development of Oracle APEX plug-ins. He frequently shares his expertise on his blog and through conferences and webinars.

Louis Moreaux began his Oracle journey with the database in 2013, before discovering Oracle APEX in 2017. Today, he is a senior Oracle APEX developer and Tech Lead at Talan (formerly Insum Solutions), specializing in the creation of custom low-code a... Show more

As a grateful father of three and a Java developer, I love diving into open-source projects. I'm all about Spring, Quarkus, AI, EclipseStore, AWS, and Kubernetes. It's where I thrive, tinkering and finding ways to make things work better.

As a grateful father of three and a Java developer, I love diving into open-source projects. I'm all about Spring, Quarkus, AI, EclipseStore, AWS, and Kubernetes. It's where I thrive, tinkering and finding ways to make things work better. 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

Alex Nuijten is a director at allAPEX, a company specializing in Oracle database development with PL/SQL and Oracle Application Express (APEX).
Besides his consultancy work, he conducts training classes, mainly in APEX, SQL and PL/SQL. Alex has been a speaker at numerous international conferences, such as ODTUG, Oracle Open World, UKOUG, IOUG, OUGF, BGOUG, OGH APEX World and OBUG. For his presentations, Alex received several Best Speaker awards.
Alex has written many articles in Oracle-related magazines, and he regularly writes about Oracle Application Express and Oracle database development on his blog "Notes on Oracle" (nuijten.blogspot.com).
Alex is co-author of the book “Oracle APEX Best Practices” (Packt Publishers), “Real World SQL and PL/SQL” (Oracle Press) and "Modern Oracle Database Programming (Apress).
Because of his contributions to the Oracle community, Alex was awarded the Oracle ACE Director award in August 2010.

Alex Nuijten is a director at allAPEX, a company specializing in Oracle database development with PL/SQL and Oracle Application Express (APEX). Besides his consultancy work, he conducts training classes, mainly in APEX, SQL and PL/SQL. Alex has been... 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

Flavio is an experienced and passionate IT engineer specializing in Oracle Databases, with over 12 years of global experience. He began his career as an Oracle DBA at one of Venezuela's top banks in 2012. In 2016, he relocated to Argentina, where he worked in diverse industries, most notably at JP Morgan Chase, a leading US bank. By 2021, Flavio had moved to Spain and joined Accenture in 2022, leveraging his extensive expertise. He has led numerous transformation projects, successfully migrating core databases for various companies, including insurance and financial institutions, from on-premises to the Cloud or Exadata Cloud at Customer.

Flavio holds over 10 certifications, including 11g Administrator Certified Associate (OCA), Oracle Database Administrator 12c Certified Professional (OCP), Oracle Database Administrator 23ai Certified Associate, and several Oracle Cloud Infrastructure certifications. His deep knowledge spans Oracle 10g/11g/12c/19c databases, Exadata Cloud at Customer (X8m, X9m), RAC, RMAN, Multitenant, and Data Guard. He is also skilled in implementing and maintaining GoldenGate replication (both unidirectional and bidirectional) and excels in troubleshooting and performance tuning to optimize SQL performance. Flavio can diagnose and resolve issues across various tiers (application, network, database, server, or storage) and is proficient in anticipating and managing critical solutions.

Flavio is eager to continue sharing valuable information and participating in conferences to spread his knowledge about databases to everyone. His dedication to the field ensures that he remains at the forefront of the latest trends and technologies, continually contributing to the community and fostering a deeper understanding of database management

Flavio is an experienced and passionate IT engineer specializing in Oracle Databases, with over 12 years of global experience. He began his career as an Oracle DBA at one of Venezuela's top banks in 2012. In 2016, he relocated to Argentina, where he ... Show more

As an Oracle ACE Director since 2015, Biju Thomas brings a wealth of experience to his role as an OCI Technical Solutions Expert, leading Data Intensity's Digital Transformation practice. Having evolved from a developer and seasoned DBA, Biju possesses a unique and comprehensive understanding of Oracle technologies, with a specialized focus on seamless cloud migrations. He is a dedicated contributor to the Oracle community, sharing his expertise and insights. Explore more at www.bijoos.com.

As an Oracle ACE Director since 2015, Biju Thomas brings a wealth of experience to his role as an OCI Technical Solutions Expert, leading Data Intensity's Digital Transformation practice. Having evolved from a developer and seasoned DBA, Biju possess... Show more

Niall McPhillips is an Oracle ACE Director and a member of Symposium 42. He has presented over 70 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 over 70 times at international conferences on different subjects including the use of Oracle technologies including APEX, ORDS, PL/SQL, REST, JSON, Oracle Text... Show more

Priit has been meddling with databases for almost 20 years. First as a certified Oracle DBA, and now as a database performance engineer helping developers to use database related technologies in the best possible manner. Contrary to (stereo-) typical database person, Priit is not afraid to get deep into client side development technologies - he decompiles Java code for breakfast. Oracle Ace Pro, member of Symposium 42

Priit has been meddling with databases for almost 20 years. First as a certified Oracle DBA, and now as a database performance engineer helping developers to use database related technologies in the best possible manner. Contrary to (stereo-) typical... 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

Stefan Oehrli, Oracle ACE Pro and Accenture's Tech Architecture Manager, has 20+ years in Oracle database systems, specializing in security, including Oracle Advanced Security and Oracle Unified Directory. A key figure in database security implementation, he's a frequent speaker at industry events. With Trivadis now under Accenture Technology, his expertise in Oracle database security is even more pivotal. Stefan co-authored "Der Oracle DBA" (2016) and resides in Muri, Switzerland.

Stefan Oehrli, Oracle ACE Pro and Accenture's Tech Architecture Manager, has 20+ years in Oracle database systems, specializing in security, including Oracle Advanced Security and Oracle Unified Directory. A key figure in database security implementa... Show more

I'm an Oracle DBA Team Lead and a developer at Abakus Plus d.o.o. (https://www.abakus.si/). My team is responsible for pro-active maintenance of many Oracle Databases and their infrastructure. I am co-author of Abakus's solutions:

* for monitoring Oracle Database performance: APPM (https://appm.abakus.si), which is also available as a Free Edition.
* for backup and recovery: Backup Server
* for quick provisioning of test & development databases: Deja Vu

Also author of open-source DDLFS filesystem which is available on GitHub (https://github.com/usrecnik/ddlfs).

Oracle Database Administrator Certified Professional & Oracle Certified Professional Java SE Programmer.

I'm an Oracle DBA Team Lead and a developer at Abakus Plus d.o.o. (https://www.abakus.si/). My team is responsible for pro-active maintenance of many Oracle Databases and their infrastructure. I am co-author of Abakus's solutions: * for monitoring... Show more