September 21–24, 2020

    Las Vegas

Featured Speakers

2019 Featured Speakers

Our world-class speakers are ready to meet you! Optimize your Oracle Code One experience and hear from experts in the industry. Check out some of our featured speakers talking about some of the newest technologies from Core Java Platform to Containers and Microservices.

Photo of Paul Bakker

Paul Bakker


Paul Bakker is a senior software engineer with Netflix in the Edge Developer Experience team, where he primarily works on tools to increase developer productivity within the company. Besides his love for writing code, he has a passion for sharing knowledge. Paul written two books: Modular Cloud Apps with OSGi was published by O'Reilly in 2013, and Java 9 Modularity was released by O'Reilly in 2017. Paul is also a frequent speaker at conferences about modularity, container technology, and many other topics. He blogs at and is active on Twitter as @pbakker. He is an Oracle Java Champion and a JavaOne Rock Star.

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Marcus Biel

Director of Developer Experience, Red Hat

Marcus Biel has become well-known in the Java community; he has a total of 70 000 followers across various social media platforms. In 2017, the editorial team at rated him #13 in its list of the world’s top Java influencers. Aside from this, Marcus is an individual member of the Java Community Process (JCP), as well as a member of the association of the German Java user groups e.V. (iJUG) and the local Java and software craftsmanship communities in his hometown, Munich.

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David Blevins


David Blevins is the founder of Tomitribe and a veteran of open source Java EE, implementing and defining Java EE specifications for more than 10 years. He has a strong drive to see Java EE simple, testable, and as light as Java SE. He is also the cofounder of OpenEJB (1999), Geronimo (2003), and TomEE (2011). He is a member of the Java EE 7 and EJB 3.2 expert groups, and a former member of the Java EE 6, EJB 3.1, and EJB 3.0 expert groups. He is also a contributing author to Component-Based Software Engineering: Putting the Pieces Together from Addison Wesley.

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Kirk Borne

Principal Data Scientist, Booz Allen Hamilton

Dr. Kirk Borne is the Principal Data Scientist and an Executive Advisor at global technology and consulting firm Booz Allen Hamilton. In those roles, he focuses on applications of data science, data management, machine learning, A.I., and modeling across a wide variety of disciplines. He also provides training and mentoring to executives and data scientists in the use of large data repositories and machine learning for discovery, decision support, and innovation. Previously, he was Professor of Astrophysics and Computational Science at George Mason University for 12 years where he did research, taught, and advised students in data science. Prior to that, Kirk spent nearly 20 years supporting data systems activities on NASA space science programs, which included a period as NASA's Data Archive Project Scientist for the Hubble Space Telescope, plus 10 years in management positions within NASA's Space Science Data Operations Office. Dr. Borne has a B.S. degree in Physics from LSU, and a Ph.D. in Astronomy from Caltech. In 2016 he was elected Fellow of the International Astrostatistics Association for his lifelong contributions to big data research in astronomy. As a global speaker, he has given hundreds of invited talks worldwide, including conference keynote presentations at many dozens of data science, A.I. and big data analytics events globally. He is an active contributor on social media, where he has been named consistently among the top worldwide influencers in big data and data science since 2013. He was recently identified as the #1 digital influencer worldwide for 2019.

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Jeanne Boyarsky


Jeanne Boyarsky has been a Java developer for more than 17 years and coauthored Wiley’s Oracle-Certified Associate/Oracle-Certified Professional 8 certification books. She is in the process of updating them for Java 11. Jeanne volunteers at CodeRanch and spoke at Oracle Code One last year.

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Daniel Bryant

Big Picture Tech

Daniel Bryant works as an independent technical consultant and product architect at Datawire. He currently specializes in enabling continuous delivery within organizations through the identification of value streams, creation of build pipelines, and implementation of effective testing strategies. Daniel’s technical expertise focuses on DevOps tooling, cloud/container platforms, and microservice implementations. He is also an Oracle Java Champion and a JavaOne Rock Star; contributes to several open source projects; writes for InfoQ, O’Reilly, and Voxxed; and regularly presents at international conferences such as OSCON, Qcon, and JavaOne.

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David Buck


David Buck is a JVM engineer working for Oracle on HotSpot. He is also a maintainer of the OpenJDK Updates project, a JavaOne Rock Star and coauthor of Japan’s best-selling Oracle WebLogic book.

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Jesse Butler


Jesse Butler is a principal cloud developer advocate with Oracle Cloud. He’s been working with containers for several years, first in Solaris and later in Linux. In his current role, he’s an advocate and evangelist for all things cloud native, including Kubernetes, containers, and serverless.

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Mert Caliskan


Mert Caliskan works as an Opsgenie Champion at Atlassian. He is the coauthor of PrimeFaces Cookbook by Packt Publishing and Beginning Spring by Wiley Publications. He is the founder of AnkaraJUG, which is the most active Java user group in Turkey. He is a part-time lecturer at Hacettepe University about enterprise web application architecture and web services, and an Oracle Java Champion.

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Sharat Chander


Sharat Chander has worked in the IT industry for 20 years for firms including Bell Atlantic, Verizon, Sun Microsystems, and Oracle. His background and technical specialty is in Java development tools, graphics design, and product/community management. Chander has been actively involved in the Java community for 15 years, helping drive greater Java awareness, acceptance, adoption, and advocacy. As Oracle’s director of Java developer relations, Chander serves as the JavaOne conference content chairperson, driving the technical content strategy and Java community involvement in the conference. He is a frequent keynote speaker and participant in developer programs worldwide. Chander holds a BS in corporate finance from the University of Maryland and an MBA in international business from Loyola College, Maryland. You can often find Chander at global developer events and Java community engagements. When not growing visibility for Java, he follows his passion for baseball, actively coaching his 10-year-old son’s Little League team and fanatically following his hometown Baltimore Orioles.

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Maria Colgan


Maria Colgan is a highly experienced product manager with 20 years of experience in enterprise software. She is currently responsible for creating material and lectures on Oracle Database and the best practices for incorporating it into your environments.

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Lonneke Dikmans


Lonneke Dikmans is chief product officer at eProseed. She is Oracle ACE Director for middleware. She starting coding when she was 12 and has been learning new programming languages and paradigms ever since. She has hands-on experience with process modeling, web services, service-oriented architecture, and traditional J2EE applications on different platforms in a wide variety of industries. She likes to pick up new technologies and has been investigating IoT, big data and fast data, blockchain, and JavaScript to determine how this fits with the products eProseed offers to her customers.

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Jasmin Fluri

schaltstelle GmbH

Jasmin Fluri works as a data engineer at schaltstelle GmbH in Bern. In her work as an IT consultant in the Oracle Data Warehouse environment, she specializes in efficient software development methods and automation in software engineering processes. In software engineering she focuses on pl/sql, Kotlin, and Spring Boot.

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Brian Fox

Cofounder and CTO, Sonatype

Cofounder and CTO of Sonatype, Brian Fox is a member of the Apache Software Foundation and former chair of the Apache Maven project. As a direct contributor to the Maven ecosystem, including the Maven-dependency plugin and Maven-enforcer plugin, he has more than 20 years of experience driving the vision behind, as well as developing and leading the development of, software for organizations ranging from startups to large enterprises. Brian is a frequent speaker at national and regional events including Java user groups and other development-related conferences.

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Viktor Gamov

Developer Advocate, Confluent

Viktor Gamov is a solution architect at Confluent, the company behind the popular Apache Kafka streaming platform. Gamov has comprehensive knowledge and expertise in enterprise application architecture leveraging open source technologies. He enjoys helping organizations build low-latency, scalable, and highly available distributed systems. He is also co-organizer of the Princeton Java user group and is a coauthor of Enterprise Web Development. He is a professional conference speaker on distributed systems, Java, and JavaScript topics, and is a regular at the most prestigious events including JavaOne, Devoxx, OSCON, Qcon, and others. He blogs at and produces the podcasts Razbor Poletov (in Russian) and

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Aurelio Garcia-Ribeyro


Aurelio Garcia-Ribeyro is a director of product management for the Java Platform group at Oracle He has been involved in the development of the JDK since JDK 7. He is a frequent presenter at JavaOne, Oracle Code One, and with Java user groups and Oracle customers. Aurelio's role includes making sure that groups within Oracle that use the JDK are well informed of changes as well as the most relevant features and enhancements in upcoming releases. He has received a JavaOne Rockstar award. Aurelio joined Oracle in 2010 through the Sun Microsystems acquisition. He joined Sun in 2008. Before moving to California he worked in workforce management and telecommunications in Florida. Aurelio holds a BS in systems engineering from Universidad de Lima, and an MBA from MIT Sloan.

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Brian Goetz


Brian Goetz is the Java language architect at Oracle, and was the specification lead for JSR-335 (Lambda Expressions for the Java Programming Language.) He is the author of the best-selling Java Concurrency in Practice, as well as more than 75 articles on Java development. He has been fascinated by programming since Jimmy Carter was president.

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Andrew Gregovic


Andrew Gregovic is a software development manager at PayPal Singapore, working in the Consumer Financial Services team. Most of his technical experience is centered around data/database problems in the context of building scalable, robust, and high-performance software products. He loves dabbling in machine learning. By accident rather than intent, he has a colorful workplace background, ranging from being a cofounder of a New Zealand loyalty/virtual payments startup to working in large multinationals.

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Beda Hammerschmidt


Beda Hammerschmidt is a developer on the Oracle Database team since 2006, and is the author of the SQL/JSON standard. He implemented large areas of the JSON support in Oracle Database. He is also a blogger on JSON and the host of the AskTom office hours on JSON.

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Elliotte Harold


Elliotte Rusty Harold is originally from New Orleans, where he returns periodically in search of a decent bowl of gumbo. However, he currently resides in the Prospect Heights neighborhood of Brooklyn with his wife Beth and dog Thor. He’s been a JavaOne Rock Star and a frequent speaker at XMLOne, Devoxx, MacWorld, STPCon, StarWest, EclipseCon, JAOO, JavaZone, and numerous other conferences. His books include Java I/O, Java Network Programming, XML in a Nutshell, and Refactoring HTML. He’s currently tech lead for Google’s cloud tools for Eclipse.

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Marcus Hirt


Marcus Hirt is one of the founders of Appeal Virtual Machines, the company that created the JRockit JVM. He is currently an engineering director at Datadog. In his spare time he used to enjoy coding on his many pet projects, composing music, and scuba diving. Now he has toddler twins. Marcus has contributed articles, white papers, tutorials, and webinars to the Java community, and has been an appreciated speaker at various conferences. He coauthored a book about JVM technology ( Marcus holds an Master of Science degree in computer science and engineering from the Royal Institute of Technology in Stockholm. He is an Oracle Java Champion and a JavaOne Rock Star.

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Mark Heckler


Mark Heckler is a pivotal principal technologist and Spring developer advocate. He is a conference speaker, published author, and Oracle Java Champion focusing on developing innovative production-ready software at velocity for cloud and IoT applications. He has worked with key players in the manufacturing, retail, medical, scientific, telecom, and financial industries, as well as various public sector organizations, to develop and deliver critical capabilities on time and on budget. He is an open source contributor and author/curator of a developer-focused blog ( and has an occasionally interesting Twitter account (@mkheck).

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Michael Hoffer

Computer Scientist, Goethe Center for Scientific Computing

Michael Hoffer is a computer scientist working at the Goethe-Center for Scientific Computing in Frankfurt, Germany, and cofounder of Digital Brain Factory. He received the JavaOne Rock Star award in 2014 and 2015 and speaks regularly at well-known Java-related conferences. Hoffer is the developer of VRL-Studio, an innovative visual programming environment that combines visual and text-based programming. In 2016 he received his PhD in computer science from the University of Frankfurt, Germany. His research interests are developing visual programming concepts in the field of modeling and simulation of highly complex physical processes. Hoffer’s long-term goal is to create a visual general-purpose programming language based on the Java platform. Hoffer blogs about visual programming, Java, JavaFX, and related technologies at

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Michael Hüttermann

Chief Coffee Officer,

Michael Hüttermann is a principal DevOps consultant, supporting enterprises on their way to implement DevOps. More information about him at He is Oracle Certified, an Oracle Java Champion, and an Oracle Groundbreaker Ambassador.

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Peter Jausovec


Peter Jausovec is a consulting member of technical staff at Oracle, working on the serverless framework called the Fn project. He has more than 10 years of experience in the field of software development and tech, in various roles such as QA (testing), software engineering, and leading tech teams. Prior to joining Oracle, he worked for Microsoft in Redmond, Washington. He holds a master’s degree in computer science from the University of Maribor, Slovenia.

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Emily Jiang

Liberty Architect for MicroProfile and CDI, Java Champion, IBM

Emily Jiang is an Oracle Java Champion. She is senior microprofile lead and has been working on microprofile since 2016; she leads the specifications of microprofile config, fault tolerance, and service mesh. She is config JSR cospec lead and a CDI Expert Group member. She works for IBM as liberty architect for microprofile and CDI. Based at IBM’s Hursley laboratory in the UK, she has worked on the WebSphere application server since 2006 and is heavily involved in Java EE implementation in Liberty releases. She regularly speaks at conferences, such as Oracle Code One, DevNexus, JAX London, Voxxed, Devoxx US, Devoxx Belgium, Devoxx UK, Devoxx France, EclipseCon, etc. Follow her on Twitter @emilyfhjiang.

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David Justice


David Justice is a senior engineer in Microsoft’s Azure open source developer experience group. He leads code and documentation generation at scale using OpenAPI for Azure. David has led the transformation of Microsoft’s APIs from proprietary descriptions to public, open source OpenAPI specifications. Prior to his time at Microsoft, David founded cisimple, a cloud-based continuous integration/ continuous delivery platform for iOS and Android. In his spare time, you will likely find him working on Golang libraries on GitHub via

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Joel Kallman

Senior Director, Software Development, Oracle

Joel R. Kallman is senior director of software development for Oracle's Server Technologies division at Oracle America, Inc. He is responsible for the development and product management of Oracle Application Express. Joel has been at Oracle since 1996 and is the cocreator of Oracle Application Express. He is an Oracle ACE and a contributing author of several books on Oracle technology, including Expert One on One Oracle, Beginning Oracle Programming, and Mastering Oracle PL/SQL: Practical Solutions. Joel holds a Bachelor of Science degree in computer and information science from the College of Engineering, Ohio State University.

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Justin Lee

Red Hat

Justin Lee is an Oracle Java Champion and has been programming in Java since 1996. He has worked on virtually every level of the application stack, from database drivers all the way to application servers and front-end interfaces. A long-time advocate of Java and Kotlin, he has spoken at conferences and user groups all across the US and Europe. He is an active open source community member, contributing when and where he can. He is currently a principal software engineer at Red Hat working on QuarkusIO. He can be found on Twitter and GitHub as @evanchooly.

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Josh Long


Josh Long (@starbuxman) is the Spring developer advocate at Pivotal. Josh is an Oracle Java Champion, a JavaOne Rock Star, and an Oracle Groundbreaker Ambassador. He is the author of five books (including O'Reilly's upcoming Cloud Native Java: Designing Resilient Systems with Spring Boot, Spring Cloud, and Cloud Foundry) and three best-selling video trainings (including “Building Microservices with Spring Boot LiveLessons” with Spring Boot cofounder Phil Webb), and an open source contributor (Spring Boot, Spring Integration, Spring Cloud, Activiti, and Vaadin).

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Kito Mann

CEO, Virtua, Inc.

Kito D. Mann is the principal consultant at Virtua, Inc. (, specializing in enterprise application architecture, training, development, and mentoring with web components, Polymer, Angular, JavaServer Faces, and Java EE technologies. He is also the editor-in-chief of (, cohost of the Enterprise Java Newscast (, and the author of JavaServer Faces in Action (Manning). Mann has participated in several Java Community Process expert groups (including CDI, JSF, and Portlets) and is also an internationally recognized speaker. He is also an Oracle Java Champion and Google Developer Expert in web technologies. He holds a BA in computer science from Johns Hopkins University.

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Stuart Marks


Stuart Marks is a consulting member of the technical staff in the Java Platform Group at Oracle. He is currently working on a variety of JDK core libraries projects including Collections, Lambda, and Streams, as well as improving test quality and performance. As his alter ego “Dr. Deprecator,” he also works on the Java SE deprecation mechanism. He has previously worked on JavaFX and Java ME at Sun Microsystems. He has more than 25 years of software platform product development experience in the areas of window systems, interactive graphics, and mobile and embedded systems. Stuart holds a master’s degree in computer science and a bachelor’s degree in electrical engineering from Stanford University. He is a JavaOne Rock Star.

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Connor McDonald


Connor McDonald is an Oracle developer advocate for Oracle. Over the past 25 years, he has worked with systems in Australia, the United Kingdom, Southeast Asia, Western Europe, and the United States. He has coauthored three books and has been a popular speaker at Oracle conferences around the world, specializing in topics regarding the database engine and PL/SQL. He won the Oracle Code speaker award in 2018, has three times won the Best Speaker award by the UK Oracle User Group, and was awarded a Lifetime Achievement award by the UKOUG in 2016.

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Sean Mullan


Sean Mullan is currently the technical lead of the Java Security Libraries team at Oracle, where he works on the security features of the Java SE Platform and JDK. Sean is also the lead of the OpenJDK Security group.

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Oren Nakdimon


Oren Nakdimon is an Oracle ACE Director with 26 years of extensive and continuous experience with Oracle-based systems, as a developer, DBA, manager, and instructor. Oren has lots of knowledge about databases in general, and Oracle in particular, and likes sharing it by blogging (, tweeting (@DBoriented), presenting in local and international conferences, and more. He believes in good collaboration between developers and DBAs, and tries to bridge the traditional gaps between these two worlds. Since 2012 Oren is responsible for the database development and administration in Moovit.

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Fabiane Nardon


Fabiane Nardon is a computer scientist who is passionate about creating software that will positively change the world we live in. Currently she works as a chief scientist at Tail where she is helping to shape new disruptive data-science-based services. Nardon was chief architect of the Sao Paulo Healthcare Information System, considered the largest Java EE application in the world and winner of the 2005 Duke’s Choice award. She led several communities including the JavaTools community at where more than 800 open source projects were born. She is a frequent speaker at conferences in Brazil and abroad including JavaOne, CodeOne, OSCON, Jfokus, DockerCon, JustJava, QCon, and more. She’s also the author of several technical articles and a member of the program committee of several conferences including JavaOne, OSCON, TDC, and QCon. She is a Java Champion and Oracle Groundbreaker Ambassador.

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Frank Pachot


Franck Pachot is an Oracle Certified Master (OCM 12c), Oak Table member, and Oracle ACE Director.

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Poonam Parhar


Poonam Parhar is a consulting member of the technical staff in the JVM Sustaining Engineering group at Oracle. Her primary responsibility is to resolve customer-reported problems with the Java Virtual Machine. She has been in the Java group for more than 18 years, beginning with Sun Microsystems. She loves debugging and troubleshooting problems, and always tries to find opportunities to enhance the serviceability and supportability of the JVM product. In an attempt to help customers and the Java community, she shares her troubleshooting and debugging experiences through the blog that she maintains at She is a coauthor of the book Java Performance Companion.

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Kirk Pepperdine

Kodewerk Ltd.

Kirk Pepperdine cofounded jClarity, a company dedicated to producing the next generation of smart performance diagnostic tooling. In addition, he provides Java performance–related services and training. Pepperdine has been performance tuning Java applications since 1998. Prior to that he developed applications and hardware that included small devices attached to sheep, and devices attached to supercomputing platforms. Pepperdine has written many articles and speaks regularly at conferences on the subject of performance tuning. He helped evolve into a premier resource for performance-tuning information.

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Bob Quillin


Bob Quillin is vice president of developer relations for Oracle Cloud Infrastructure; he leads the Cloud Native Labs team that is responsible for Oracle Cloud Infrastructure cloud native developer relations, advocacy, engagement, solutions, and lighthouse adoption. Bob joined Oracle as part of the StackEngine acquisition in December 2015, where he was cofounder and CEO. Based in Austin, Texas, StackEngine was an early container native pioneer, building services and platforms designed to help developers and DevOps teams build, orchestrate, and scale enterprise-grade container apps. Prior to his role as cofounder and CEO of StackEngine, Bob was CEO of Austin-based CopperEgg, a cloud monitoring SaaS startup acquired by Idera in 2013. With previous executive and startup leadership roles at CopperEgg, nLayers, EMC, and VMware, Bob has focused his career on applying automation to simplify complex cloud, IT, and developer challenges. You can find him on Twitter @bobquillin.

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Jennifer Reif


Jennifer Reif is a developer relations engineer at Neo4j, and a conference speaker, blogger, and avid developer and problem-solver. She holds a master’s degree in computer management and information systems, and she has worked with large enterprises to organize and make sense of widespread data assets and leverage them for maximum business value. She has worked with a variety of commercial and open source tools and enjoys learning new technologies, sometimes on a daily basis. Her passion is finding ways to organize chaos and deliver software more effectively. She is a Groundbreaker Ambassador.

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Sven Reimers

Airbus Defence and Space

Sven Reimers, based at Lake Constance in southern Germany, works as a systems engineer at Airbus Defence and Space, creating next-generation ground segment software. He has more than 20 years’ experience building complex software systems, and about 20 years’ experience with Java, going back to its early days. In 2009 Reimers was the winner of the Duke’s Choice Award in the Network Solutions category for ND SatCom satellite communication management software. Besides his day job, his support for NetBeans got him elected a NetBeans Dream Team member in 2008. He is also a contributor to OpenJFX and the leader and founder of the Bodensee Java user group. For his long-term commitment to Java and the community, Reimers was named a Java Champion. Since the move of NetBeans to Apache Foundation he is now an Apache NetBeans committer. Find him on Twitter as @svennb.

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Chris Richardson

Eventuate, Inc.

Chris Richardson is the founder of Eventuate Inc., a microservices startup. He is the creator of, the author of Microservices Patterns: With Examples in Java, and an Oracle Java Champion and JavaOne Rock Star.

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Simon Ritter

Azul Systems

Simon Ritter is the deputy CTO of Azul Systems. Simon has been in the IT business since 1984 and holds a Bachelor of Science degree in physics from Brunel University in the UK. Simon joined Sun Microsystems in 1996 and started working with Java technology from JDK 1.0; he has spent time working in both Java development and consultancy. Having moved to Oracle as part of the Sun acquisition, he managed the Java Evangelism team for the core Java platform. Now at Azul, he continues to help people understand Java as well as Azul’s JVM technologies and products. Simon has twice been awarded Java Rock Star status at JavaOne. He currently represents Azul on the JCP Executive Committee and on the Java SE Expert Group. He is an Oracle Java Champion, a JavaOne Rock Star, and an Oracle Groundbreaker Ambassador.

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Graeme Rocher

Creator of Grails and Micronaut, Object Computing

Graeme Rocher is a software engineer and professional open source contributor who created several popular open source projects including Grails (, GORM (, and Micronaut ( Rocher currently leads the development of the Grails and Micronaut frameworks at OCI ( and is the author and/or coauthor of several books including The Definitive Guide to Grails 2 (Apress). Graeme won the inaugural Oracle Groundbreaker award in 2018.

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Ixchel Ruiz

Karakun AG

Ix-chel Ruiz has developed software application and tools since 2000. Her research interests include Java, dynamic languages, client-side technologies, and testing. Ruiz is a Java Champion, Oracle Developer Champion, hackergarten enthusiast, Open Source advocate, public speaker, and mentor.

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Carlos Sanchez


Carlos Sanchez specializes in software automation, from build tools to continuous delivery. He has spoken at several conferences around the world, including ApacheCON, KubeCon, JavaOne, and FOSDEM. He has been involved in open source for more than 10 years, and he is an Oracle Groundbreaker Ambassador and a member of the Apache Software Foundation among other open source groups, contributing to several projects such as Jenkins, Apache Maven, and Puppet. He works at CloudBees, enabling scalable and cloud native deployments of the Jenkins platform.

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Chris Saxon

Developer Advocate, Oracle

Chris Saxon is an Oracle developer advocate for SQL. His job is to help you get the best out of the Oracle Database and have fun with SQL. To help you with this he blogs at All Things SQL. He also creates videos combining SQL and magic on YouTube at The Magic of SQL. If you have questions about working with Oracle Database technology, please reach out to him. You can do this via Twitter or on Ask TOM.

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Oleg Selajev


Oleg Šelajev is a developer advocate for the Graal project at Oracle Labs, which aims to make programs run faster and developers more productive. He helps organize Virtual JUG, the online Java user group, and a GDG chapter in Tartu, Estonia. In his spare time, he is pursuing a PhD in dynamic system updates and code evolution. Previously, Oleg was a part-time lecturer at the University of Tartu and he enjoys speaking, teaching, and participating in software conferences all over the world. His favorite languages include Java, JavaScript, and Clojure. He is an Oracle Java Champions alumni. He can be found on Twitter as @shelajev.

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Todd Sharp

Cloud Developer Advocate, Oracle

Todd Sharp is a developer advocate for Oracle, focusing on Oracle Cloud and cloud databases. He has 15 years’ experience as a full stack developer and he has worked with dynamic JVM languages and various JavaScript frameworks for his whole career. He was formerly with ColdFusion and more recently with Groovy/Grails on the server side. He also has experience with jQuery, ExtJS, and all versions of Angular on the front end.

He’s obsessed with technology and programming and feels extremely lucky to get paid to do what he loves every single day. When not learning a new language, tool, or framework he can usually be found volunteering at his local school working with the FLL Lego Robotics club, working on his barn automation project built with Raspberry Pi and various sensors with a web-based interface, or making new friends at a conference.

Todd has been happily married to his lovely wife Rhonda for 16 years. He lives in the beautiful Appalachian mountains of North Georgia with their 13-year-old daughter, 11-year-old son, seven chickens, a potbelly pig, a dog, and a cat.

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Jeff Smith


Jeff Smith has been working with database development, design, and management tools for more than 18 years, and is now the product manager at Oracle for Oracle SQL Developer, Oracle SQL Developer Data Modeler, Oracle SQL Developer Command Line, and Oracle REST Data Services. Jeff travels the world delivering tips and tricks for Oracle Database tools, publishes regularly on, and spends most of his free time on StackOverflow, at the gym, and at his local brewery.

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Venkat Subramaniam

Agile Developer, Inc.

Dr. Venkat Subramaniam is an award-winning author, founder of Agile Developer, Inc., creator of, and an instructional professor at the University of Houston. He has trained and mentored thousands of software developers in the US, Canada, Europe, and Asia, and is a regularly invited speaker at several international conferences. Venkat helps his clients effectively apply and succeed with sustainable agile practices on their software projects.

Venkat is a coauthor of multiple technical books, including the 2007 Jolt Productivity award-winning book Practices of an Agile Developer. You can find a list of his books at You can reach him by email at or on Twitter at @venkat_s.

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Bernard Traversat


Bernard Traversat is currently the vice president of software development for the Java SE Platform at Oracle. He manages the development team responsible for the Java language, JVM, Core libraries, Java UI toolkits, and Java deployment stack for Oracle JDK. Bernard also oversees security development for the Java platform and OpenJDK development. Previously he led Sun Microsystem efforts in pervasive computing for small consumer devices. Prior to that, he worked at the NASA Ames Research Center on distributed-memory operating systems for massively parallel supercomputers.

Photo of Ray Tsang

Ray Tsang


Ray Tsang is a developer advocate for the Google Cloud Platform, an Oracle Java Champion, and a JavaOne Rock Star. Ray has extensive hands-on cross-industry enterprise systems integration delivery and management experience from his time at Accenture, managing full stack application development and DevOps. Ray specialized in middleware, big data, and PaaS products during his time at Red Hat while contributing to open source projects such as Infinispan. Aside from technology, Ray enjoys traveling and adventures.

Photo of Heather VanCura

Heather VanCura


Heather VanCura in the director and chairperson of the Java Community Process (JCP) program. In her role she is responsible for leadership of the community. In this role she also serves as an international speaker, mentor, and leader or hack days. VanCura oversees the work of the JCP executive committee, the web site, JSR management, community building, events, communications, and growth of the membership. She is also a contributor and leader of the community-driven user group adoption programs. She is the spec lead for JSRs as part of the ongoing JCP.Next effort to evolve the JCP itself. She is passionate about Java and developer communities, and she enjoys trying new sports and fitness activities in her free time.

Photo of Erno Venalainen

Erno Venalainen


Erno Venalainen started his career as a full stack web developer at a time when the only option to do web development was full stack. After a decade or so of developing (mostly Java) added-value software on top of enterprise applications, he drifted more and more to lifecycle management, performance tuning, and cloud operations. At some point he learned that was called DevOps. Currently he specializes in helping Oracle customers adopt cloud native technologies and more agile development practices.

Photo of Mikael Vidstedt

Mikael Vidstedt


Mikael Vidstedt is director of the Java Virtual Machine (JVM) in the Java Platform group at Oracle. Over the last 20 years he has worked on all the various aspects of the Java and JVM technologies, focusing on everything from compilers and optimization to operating systems and server virtualization. He has worn many hats, including JVM tech lead and architect. Mikael holds a master's degree in computer science from the Royal Institute of Technology (KTH) in Stockholm and is based in Santa Clara, California.

Photo of Mercedes Wyss

Mercedes Wyss


Mercedes Wyss is a software engineer with more than seven years of experience in the back end, front end, and Android development using Java and Kotlin. Currently, she is a CTO at Produactivity, a startup based in Guatemala. She was previously organizing meetings in Guatemala Java Users Group from 2012 to 2016. She has two and a half years focusing on increasing women’s participation in STEAM by running a JDuchess chapter in Guatemala, and she is the leader of a Google community (Devs+502). She is an Oracle Groundbreaker Ambassador and an Auth0 Ambassador, she also has a Duke’s Choice Award in educational outreach.