Event Sourcing: Combining Reliability, Consistency and Performance
Nicolas Piguet
Pay attention, the location has changed, we have moved to Foound at Rue Jean-Dassier 7, 1201 Genève GenevaJUG will welcome Nicolas Piguet Event sourci...
Where Java developers connect, learn and share
The GenevaJUG is a Java user group dedicated to bringing together professionals, open source communities, institutions, students, and educators to exchange ideas and discuss the technological advances of the Java platform.
We meet on the last Tuesday of each month. Our meetings are free, open to everyone, and feature technical presentations, product demonstrations, or round table discussions. After each meeting, we typically gather for informal networking over drinks and refreshments.
Nicolas Piguet
David Pilato
José Paumard
Hans Peter Grahsl
Venkat Subramaniam
Maxime Nowak
JĂ©rĂ´me Van Der Linden
Margarita Nedzelska
Sarah Genoud-Prachex
Freddy Mallet
Vincent Sevel, Ludovic Bertin
Hugo Chiavenuto
Chrislain Razafimahefa
Clement Escoffier, Guillaume Smet
Laura Wacrenier, Audrey Neveu, Xavier Bourguignon
Francesco Nigro
Olivier Lange
Brian Bordini
Florent Ramière
Vincent Sevel
Stéphane Nicoll
Gaetan Zoritchak
David Gageot
David Delabassée
Clement Escoffier
Oleg Nenashev
Jean-Frederic Clere
Freddy Mallet, Daniel Schwarz
Sebastian Daschner, Andres Almiray
Thomas Verin
Loan Tricot
SĂ©bastien Deleuze, Brian Clozel
Evgeny Mandrikov
Alexis Hassler
Pierre-Yves Ritschard
David Pilato
Dominique Chion
Duarte Meneses, Tamas Vajk
Geoffrey Berard, Gilles Di Guglielmo
Akram Ben Aissi
Sébastien Féré
Alexis Roussel, ZaĂŻd Boudamouz, Moussa Boudamouz, Benjamin Leroux, Bertrand Dickele, Jean-Philippe Laurent, Jean-Christophe Plessis
Gaetan Zoritchak
Jean-Baptiste Giraudeau
Nicolas Peru, Nicolas Fränkel, Evgeny Mandrikov
Thierry Chatel
Mathieu ancelin, Alexandre Delègue, Jonathan Goldsmith
Ludwine Probst, Amira Lakhal, Julia Mateo
Emmanuel Bernard
Stéphane Nicoll
Olivier Tavard
Duy Hai Doan, Michaël Figuiere
Jeff Mesnil, Emmanuel Hugonnet
Vincent Attiogbé, Sébastien Jarrin
José Paumard
Evgeny Mandrikov, Dinesh Bolkensteyn
Stephen Chin
Romain Mani-Bucau
Audrey Lièvremont, Nicolas Fränkel, Guillaume Vial, Teryk Bellahsene, Philippe Kernevez, Nicolas Peru
SĂ©bastien Deleuze
Jérémie Grodziski
Dominique Chion, Axel Deblasi
Thierry Wasylczenko
Tugdual Grall
David Pilato
Randall Hauch
SĂ©bastien Andrivet
Benoit Perroud, Katia Aresti, Cyril Lapinte
Pierre Pezziardi, Audrey Neveu, Freddy Mallet, Olivier Gaudin
Nicolas RĂ©mond
SĂ©bastien Goasguen, Pablo Tamarit
Emmanuel Hugonnet
Sacha Labourey
Rodrigue Le Gall
Fabien Nicollet, William DraĂŻ
Hamlet D'Arcy, Dierk König, Andres Almiray, Mathilde Lemée
Nicolas Fränkel
Claude Falguière
Henri Gomez
JĂ©rĂ´me Louvel, Thierry Boileau
Guillaume Nodet
Adam Bien
Scott Rich
julian_dragos, Jonas Bonèr
David Gageot
Alain HelaĂŻli, Iulian Dragos
Pascal Romanens
Alexis Moussine-Pouchkine
Didier Girard
Mario Fusco
Arnaud HĂ©ritier
Freddy Mallet
Guillaume Bort, Habib Guergachi
Consultant and author, Adam Bien, is an Expert Group member for the Java EE 6, EJB 3.1, and JPA 2.0 JSRs. He has worked with Java technology since JDK 1.0 and Servlets/EJB 1.0 in several large-scale projects and is now an architect and developer in Java SE/EE/FX projects. He has edited several books about Java and J2EE / Java EE and is the author of [Real World Java EE Patterns](http://www.amazon.com/Real-World-Patterns-Rethinking-Practices/dp/0557078326). Adam is a Java Champion, Oracle Java Developer of The Year 2010, and JavaOne 2009 Rock Star.
I see you've sent "message" but I'm not sure what you need help with. Could you provide more context? For example, are you asking me to: - Send a message somewhere (Slack, email, etc.)? - Help with code related to messaging? - Something else? Let me know what you're working on and I'll be happy to help!
Alain Helaili is a senior software engineer with extensive experience in enterprise Java development and architecture. He is dedicated to sharing knowledge and improving development practices.
Alexandre Delègue is a study engineer at SERLI, working primarily on Java / JavaEE / Spring technologies, as well as on continuous integration issues, quality metrics, and recently on a log centralization project. His past experiences have also led him to work on business applications as well as on public websites, particularly on security, performance, and scalability issues.
I am a Java developer and trainer for about fifteen years and independent for more than ten years. I help my clients improve the way they develop, by coding with them or by auditing their code or architecture. I also help them deploy and administer their Java applications on Tomcat or JBoss / WildFly.
Alexis Moussine-Pouchkine loves good wine and Java architectures. At Sun Microsystems, he acts as an ambassador for the GlassFish project, a next-generation Java EE application server. This allows him to meet many Java developers and other open source technology users at meetings and conferences. He participates in several open source communities, translates technical works on Java and XML into French, and still has a life outside of Java!
Former president of the Swiss Pirate Party, he previously worked on implementing the digital library of the International Court of Justice in The Hague and for the United Nations Institute for Training and Research. He is co-founder and CEO of Bity, the first bitcoin broker approved by FINMA.
Amira LAKHAL is an Agile Java Scala developer at Valtech. She is passionate about agility, functional languages, and the Big Data world. She is committed to the Duchess France association where she participates in connecting women in computing.
Andres is a Java/Groovy developer and a Java Champion with more than 17 years of experience in software design and development. He has been involved in web and desktop application development since the early days of Java. Andres is a true believer in open source and has participated on popular projects like Groovy, Griffon, and DbUnit, as well as starting his own projects (Json-lib, EZMorph, GraphicsBuilder, JideBuilder). Founding member of the Griffon framework and Hackergarten community event.
Arnaud Heritier is a senior architect. He has ten years of professional experience acquired in software publishers, service companies and consulting firms. He joined eXo Platform in July 2009 as Software Factory Manager. He is responsible for the methods and tools used to develop and deliver products. He participated in many open source projects for several years. His main contribution is to the Apache Maven project, which he joined in 2004 and is a member of the steering committee (PMC). He is a regular speaker at conferences and Java User Groups, and is co-author of the Apache Maven book published by Pearson. He holds a DESS degree in applied software engineering from Jussieu University, Paris VI.
Audrey is a developer at AIM. She has 8 years of experience in web projects in Belfort, Grenoble, and Geneva. A technology enthusiast, married to a geek and mother of two children (future geeks?), she is passionate about development and loves Java User Groups and Human Talks. In 2012, she co-founded jDuchess Swiss, an organization whose objective is to attract and give visibility to women in the development world.
Audrey is a Full-Stack developer specialized in API and Big Data issues. Passionate about her profession, Audrey has always been deeply involved in the Java community through several Java User Groups and conferences (Duchess France, Paris JUG, Devoxx France, Devoxx UK), as well as through initiatives aimed at introducing programming to young people (Programatoo, Devoxx4Kids).
Axel is a middleware specialist particularly sensitive to performance, concurrency, and load challenges. He worked for several years at Airbus before joining the technical leadership of Hardis, a publisher based in Grenoble. It was there that he met Dominique, who had a brief stint at Hardis in a career filled with JAVA-related IT service positions. Dominique stayed at Hardis for only a year, but Axel and he remained in contact. When a startup idea took shape, they naturally decided to partner to launch inZair, along with Nourrédine Rouibah. inZair was officially born on January 20, 2011, after two years of work in the evenings, weekends, and a good portion of their vacations. In this venture, Axel took the lead on server architecture on Google App Engine, while Dominique took a more transversal role spanning from mobile client to server.
After a first life as a developer-gamer, it was in 2007 that the encounter that would change Benjamin's destiny took place. In a Java code review with a bad reputation, he discovers, on that Thursday, December 12th, as office lights were already flickering, a small shy Class extending TestCase. After a difficult interrogation, the little PriceComputationServiceTest, in its state, offers itself fully to Benjamin and reveals all its secrets. Since that day, Benjamin, strengthened by its revelations, traverses the most hostile lands driven by his new weapons. First in France, within Société Générale, where he discovers the wisdom of testing, and finally at the heart of Swissquote. There, while playing Scrum Master with a team in Ukraine, he tries to convey the wisdom learned and highlight the need to provide a more business-oriented vision of these concepts.
Benoit is a software engineer at Verisign — the Internet registry for .COM and .NET domain names. He is responsible for developing the internal platform for data storage and analysis, based on Hadoop and its ecosystem. His daily work includes ingestion and storage of internal and external data streams, writing tools to help analyze this data, and setting up a search and extraction platform for this data. In addition to being the happy father of two young children, Benoit is an Apache contributor, NoSQL technology evangelist, and a frequent speaker at Swiss and European technology conferences.
Bertrand is a Java developer based in Geneva. After working for about ten years in the Paris region, he settles in the canton of Vaud and joins the Hortis company. He is a versatile and enthusiastic developer interested in functional and reactive programming. He also enjoys wasting time watching MHSC matches, the football team from his hometown.
Java Developer converted to Operations and Architect. Passionate about cloud, container and blockchain. Based in Switzerland with a parenthesis in China.
Brian is a member of the Spring team at Pivotal and works daily with the Spring community to improve Spring Framework and Spring Boot. He is also the lead developer of the [spring.io](http://spring.io/) website, which is itself an open source Spring Boot application.
For the last few years Chrislain has been working at lambdaforge where they develop Datahike, an open source functional database. After a postdoc at Sun Microsystems in California working on virtual machine implementation, Chrislain came back to Geneva and worked as a developer in different industries. He is the co-founder of Shared Object, an IT consultancy company. He has extensive experience in Java, Ruby on Rails and more recently Clojure. From time to time, he also gives courses on various technologies.
Claude Falguiere is a skilled software architect and engineer with deep expertise in enterprise Java development. He brings extensive experience in designing and building large-scale systems.
Who am I? Good question. I was a researcher at the University of Grenoble, an architect at Axway, director of innovation at a German company…. Currently I am a lead developer on vert.x, and I work for Red Hat. I have touched many domains: OSGi, mobile, continuous delivery, devops, HTML5… My goal? To provide tools and methods to make development more efficient but also more pleasant and fun. I am an active contributor to many Open Source projects like Apache Felix, iPOJO, Wisdom, and of course vert.x.
I see you've sent just "message" — that seems incomplete. What would you like me to help you with? Feel free to describe the task, ask a question, or share what you're working on.
Daniel Schwarz is a passionate software developer, currently living in Munich. Apart from software craftmanship, he coaches small teams and individuals in improving their programming skills and methodology. Last year he was part of the backend development team at SonarSource.
My name is David Delabassée, I am in the Java space since the early days of this technology. I currently work in the Serverless Developer Relations team at Oracle where I spend most of my time on [Fn Project](https://github.com/fnproject). Prior to that, I was working as an Evangelist in the Oracle Java EE organization and was recently involved in the initiative to transition the developemnt of the Java EE platform to the Eclipse Foundation, aka [Jakarta EE](https://jakarta.ee/). I am also a regular speaker at [conferences and user groups, large and small, local and global](http://delabassee.com/conferences/). I can be reached on [Twitter](https://twitter.com/delabassee) (DMs are open)
David is a Developer Advocate at Google Cloud. He's working on Containers Tools. Previously, he helped open the R&D office of Docker in Paris.
Since 2013, David Pilato has been a developer and evangelist at elastic.co, after spending the previous two years promoting the Elasticsearch open-source project. He manages the French community and organizes [BBLs](www.elastic.co/blog/free-lunch-for-open-source-engineers) within companies.
Didier Girard heads the Technical Department of SFEIR where he defines the company's technology strategy while ensuring architecture missions for major clients. He holds a doctorate in computer science from the Ecole Normale Superieure de Lyon, is a J2EE architect and has been using Java on the server side since 1997. Creator of the portal website www.application-servers.com, he regularly conducts conferences on topics such as development industrialization, rich clients, Eclipse, web services, J2EE architecture... Didier Girard was Technical Director of IMPROVE after spending 4 years at Atos.
Dierk König works as a fellow for Canoo Engineering AG, Basel, Switzerland. He is a committer to many open-source projects including Groovy, Grails, and GPars, and a manager of the open-source Canoo WebTest project. He is lead author of the “Groovy in Action” book, which is amoung the publisher’s best-selling titles of the decade.
Having fun writing the tools to analyze your code (Java, C#, …) and the code you wish didn’t exist (COBOL, PL/I, RPG, …) at SonarSource. Contributed the support of Java 7 to both PMD and Checkstyle open source projects. Prior to that, I had the chance to learn from the best at EPFL, Switzerland.
After approximately fifteen years of work with Java and a little over five years with NoSQL databases, Dominique takes a summer break from computers to reflect on the profession of developer.
Dorra is VP Tech at Arolla, co-author of the Software Craft book (Dunod edition). She is passionate about development and best practices. She shares her expertise by publishing articles and hosting conferences and meetups. She also taught at an engineering school in Paris for many years.
@Duarte, coding in IntelliJ and software developer at SonarSource. @Duarte leads the development of SonarLint for IntelliJ and SonarLint for Eclipse
Duy Hai is a technical evangelist for Datastax, the commercial company behind Apache Cassandra. He divides his time between giving presentations/meetings/talks on Cassandra, developing open source projects for the community, and helping projects using Cassandra. Before Datastax, Duy Hai was a freelance Java/Cassandra developer.
Emmanuel Bernard is a data platform architect in the JBoss portfolio at Red Hat. He oversees data-related projects, particularly the Hibernate portfolio from which he originated. Emmanuel joined the Hibernate team in 2003 and since then, his work is almost 100% open source. He led the Hibernate JPA implementation, founded and led Hibernate Search, Hibernate Validator. His latest venture is Hibernate OGM, but he also contributes to Ceylon, Awestruct, and a few other projects in his spare time. Emmanuel is a member of the JPA 2.1 Expert Group and responsible for the Bean Validation specification. He regularly speaks at various conferences and Java User Groups, notably JavaOne, JBoss World, Devoxx, and is co-author of [Hibernate Search in Action](http://emmanuelbernard.com/books/hsia/) published by Manning. He is also founder and co-host of two podcasts: [Les Cast Codeurs](http://lescastcodeurs.com/) and [JBoss Community Asylum](http://asylum.jboss.org/) (English). You can follow him on Twitter at [@emmanuelbernard](http://twitter.com/emmanuelbernard).
This experience gave him a comprehensive vision of enterprise application development and mastery of appropriate technologies. He participated for several months in Orange Labs' work on implementing their development and integration platform for new IT system services. Over the past year, he joined JBoss, Red Hat's middleware team, and participates in the development of the WildFly application server. During his free time, he develops and maintains the WildFly plugin for the Netbeans IDE and leads AlpesJug, the snowiest of French Java User Groups.
Software Gardener, addicted to open source and code quality, hired by SonarSource after creation of improved open source analogs of their commercial products. Currently working as Language Team Technical Leader, responsible for development of source code analyzers for languages like Java, C/C++, C#, JavaScript, Python, COBOL, PL/SQL; implementator of cross project duplication detection. In a spare time working on other projects like for example JaCoCo, Eclipse EclEmma.
Fabien Nicollet is a developer with strong expertise in web technologies and system architecture. He has experience building complex enterprise applications.
Florent Ramière has over twenty years of experience in software development and IT project management. He spent several years in the United States at a software publisher. Upon his return to France after a stint at Capgemini, he co-founded Jaxio. After more than 10 years of entrepreneurship, Florent joined Confluent - the company founded by the creators of Apache Kafka - where he supports large organizations in Europe as a Systems Manager.
I was born with keyboard and monitor at hand. In the last years I have cultivated a strong passion in Java development, recently joined by C and ASM development on x86 / PowerPC platforms. A big fan of the DDD (Domain Driven Design) world, I have developed several Event-Sourced (and CQRS) high performance solutions in the medical and IoT field. I am an active member of various online communities on performance (https://groups.google.com/forum/#!forum/mechanical-sympathy) and Senior Software Engineer for Red Hat in the messaging field, specialized in performance-oriented development and testing.
Freddy Mallet is the creator of the SonarQube platform and co-founder of Sonar. Freddy is a big fan of collective intelligence and human interactions but equally values what agile methodologies have brung in terms of automation. Nowadays, Freddy is an IT entrepreneur particularly involved in the reviewpad.com startup. The goal of Reviewpad is to significantly impact the Lead Time metric by disrupting our approach to manual code review.
After using Kotlin for several years in backend development, Gaetan seized the advantages that Kotlin offers for cross-platform development. In 2017, he launched the data2viz project, which aims to provide visualization tools usable in multiple environments: mobile, browser, and server.
Full stack developer for 4 years at LesFurets.com Works primarily on traffic acquisition (SEO, CRM). Also involved in the release process and release tools.
Gilles has been working for 15 years with various software publishers (ILOG, PrimaSolution, Courtanet) on a wide variety of topics: 2D graphics library, rules engine, service platform, business model code generation. Currently, he is the architect of LesFurets.com, and enjoys getting fresh air in San Francisco. He has presented various sessions at JavaOne, Devoxx, SoftShake, CodeGeneration, and several Java User Groups in France.
Guillaume is the lead developer of the Play! framework project and co-founder and CTO of Zenexity, a consulting firm specialized in pure web architectures. After starting his career in a large IT services company, he joined the ECOO team at INRIA, contributed to several renowned open source projects, and joined Zenexity where he leads consulting missions in IT system transformation for prestigious companies.
Guillaume Nodet is an experienced software architect and developer with expertise in OSGi and enterprise Java technologies. He has contributed significantly to open source projects and is passionate about clean architecture.
After 13 years in free software services building business applications for major clients, I joined Red Hat 5 years ago to work on Hibernate technologies - Hibernate Search and Hibernate Validator primarily. Embarked on the Quarkus adventure two years ago, I am one of the main contributors with a strong emphasis on versioning and processes. In my spare time, I work on Quarkus GitHub App and Quarkus Bot to optimize our work. Helpful tip to recognize me on the street: I always wear a floral shirt.
eCommerce Team Leader at Nestlé Nespresso S.A.
Habib, co-founder and CEO of Zenexity, is among the French architects who introduced strong concepts such as the "integrability coefficient" of applications. With over 7 years at the Central IT Department of AXA, more than 3 years at the IT Strategy Department of Societe Generale, and 5 years in the executive committee and Technical Department of a large IT services company, he now leads major IT system urbanization and transformation projects towards the WEB. He hosts several seminars within the prestigious Capgemini Institute.
Sr. Java/Groovy Developer, Groovy and CodeNarc Committer, Hamlet D’Arcy has been writing software for over a decade, and has spent considerable time coding in C++, Java, and Groovy. He’s passionate about learning new languages and different ways to think about problems. Hamlet is the founder of the Basel-based Hackergarten open source coding group, and regularly participates and speaks at local and international user groups and conferences. Hamlet is a committer on the Groovy and CodeNarc projects, and is a contributor on a few other open source projects (including JConch and the IDEA Groovy Plugin). He blogs regularly at [http://hamletdarcy.blogspot.com](http://hamletdarcy.blogspot.com) and can be found on Twitter as [HamletDRC](http://twitter.com/hamletdrc)
Hans-Peter Grahsl is a Developer Advocate at Red Hat. He is an open-source community enthusiast and in particular passionate about event-driven architectures, distributed stream processing systems and data engineering. For his code contributions, conference talks and blog post writing at the intersection of the Apache Kafka and MongoDB communities, Hans-Peter received the Confluent Community Catalyst award 4 times in a row and became one of the founding members of the MongoDB Champions Program. He is a regular speaker at international tech-related and developer conferences for several years.
Henri Gomez is an experienced software engineer with strong expertise in Java technologies and system administration. He has contributed to numerous open source projects and is passionate about quality and best practices.
Solution Architect at Lombard Odier, in Geneva (CH), where I try to bring elegant, clean and resilient solutions that help our users and ease their jobs. Mainly focusing on JavaScript related topics, but curious about any kind of technology. Triathlon and mountain lover.
Iulian Dragos is a key member of Martin Odersky’s EPFL’s Scala team. For the last six years he has been the main contributor for many critical Scala components including the compiler backend, its optimizer and the Eclipse build manager. Iulian has been responsible for many of the innovations that give Scala a better run time performance. His most recent contribution, seen in Scala 2.8, is the ability to apply specialization to generic libraries to give a major performance improvement for primitive types. As well as his development work, Iulian has spent several years teaching Scala, compilers and type systems, both at introductory and advanced levels.
Jean-Baptiste is a programmer in pursuit of productivity and serenity. This quest has led him to domain-driven design and strongly-typed functional programming. He advocates for discussion before action and "using the right tool for the job," even if sometimes this shakes "but we've always done it this way!". Web services in Haskell? Why not! ;) To facilitate functional programming in Java, he created the Derive4J open source project [https://github.com/derive4j/derive4j](https://github.com/derive4j/derive4j)
Consultant at SERIAL for one year, Jean-Christophe is a senior IT engineer with solid experience in the Java environment. He has worked on many topics such as SOAP interfaces, portals and web applications, payment card encoding, back-end development, and banking applications.
I see you've written "message" — could you clarify what you'd like me to do? Are you looking to: - Send a message to someone (via Slack, email, etc.)? - Ask a question about something? - Something else? Let me know the details and I'll help!
Jean-Philippe is a senior IT engineer specialized in new web architectures and Java technology. He heads the Web division at SERIAL SA.
Jeff Mesnil is a software developer at JBoss, the middleware division of Red Hat. He is a core developer on WildFly application server where he leads the messaging subsystem. Jeff is a strong proponent of Open Source development and collaborative processes. He has a strong interest in messaging on all kind of platforms and devices. He also enjoy making photographs. You can read more from him at his weblog: [http://jmesnil.net/weblog/](http://jmesnil.net/weblog/)
Jérémie is passionate about software design and development. He has been perfecting this craft for over 25 years and loves sharing his passion. By day, he works as a consultant at Redsen Consulting, training and supporting his clients' projects using approaches like Domain-Driven Design. By night, he develops ZenModeler, the tool he dreams of for designing and analyzing better software. Jérémie lives in Paris and believes that curiosity is a wonderful quality!
Jerome Louvel is a software expert with a focus on web technologies and modern development frameworks.
Solution Architect @AWS (ex-OCTO Technology), software craftsman, cloud & serverless advocate.
Jonas Bonèr is a programmer, teacher, mentor, speaker and author who spends most of his time consulting, hacking on open source as well as lecturing and speaking at developer conferences world-wide. He has worked at Terracotta, the JRockit JVM at BEA and is an active contributor to the Open Source community; most notably created the Akka Project, AspectWerkz Aspect-Oriented Programming (AOP) framework, committer to the Terracotta JVM clustering technology and been part of the Eclipse AspectJ team.
I don’t always write reactive applications … but when I do, it runs on Raspberry Pi
José is a member of the Java Platform group at Oracle as a Java Developer Advocate. He was a lecturer at Paris 13 University for 25 years and worked with companies on training and expertise. He manages the technical blog "Java le soir" and contributes to various Open Source projects. Involved in the Java community, he is treasurer of the BJPC association, organizer of Paris JUG evenings and co-founder of Devoxx France which he co-organized for the first 3 years. Java Champion, regular speaker and multiple times Java Rockstar for Devoxx (FR, BE, UK), JavaOne, many French-speaking Java User Groups, he is also an author for Java Magazine. His Twitter: [@JosePaumard](http://twitter.com/JosePaumard) His blog: [http://blog.paumard.org/](http://blog.paumard.org/)
Julia is a consultant at Hortis. She has worked as a developer on various Java projects in Madrid, Paris, and Geneva in the banking, energy, transport, and telecommunications sectors. She is a passionate developer highly involved in everything related to the Software Craftsmanship movement and code quality. She is a fan of Java User Groups, Devoxx, and technology watch in general. In 2012, she co-founded jDuchess swiss, an organization aimed at attracting and giving visibility to women in the development world.
Katia has worked in IT since 2005, first as a consultant at Xebia and Sopra, and as a freelancer since September 2012. She’s mostly Java developer (while also dabbling in PHP). She has worked with MongoDB since 2010, becoming one of the first java teams getting MongoDB in production in France, urban dive. She’s spoken about Java and MongoDB at Java User Groups, MongoDays and MongoDB User groups about her expertise via hands-on workshops, presentations and open space Q-A’s. One of her ventures is Duchess France, which focuses on educating women developers on emerging technologies. She is passionate about Open Source and enjoys getting involved on community contributions.
UX Designer based in Geneva. For the past several years, I have been working on the user experience of products designed for developers: SonarQube and SonarCloud. In parallel, I am passionate about the accessibility and inclusivity of digital products.
I became interested in machine learning by participating in a competition aimed at recognizing letters in photos. I then interned at AODocs, where I attempted to introduce machine learning into the company by creating a prototype of an ML-based feature. I try to be at the intersection of machine learning and code, two valuable skills for building intelligent systems. Blog: [https://www.tricot.red](https://www.tricot.red)
46 years old, amateur of technological and/or sporting challenges. Java enthusiast since the beginning of Java, and more recently in the world of containers and container orchestrators, particularly Kubernetes and the Openshift solution.
Ludwine Probst is a data engineer at Cityzen Data, where she works on machine learning and processing large volumes of data in real time. She regularly speaks at conferences on data analysis and processing. Finally, she invests heavily in promoting and connecting women in technology, particularly through her roles in the Duchess France association and Ladies Who Code Paris.
Software Engineer @ Sonar Margarita is a big Kotlin fan and Kotlin GDE. Knows both conference sides: speaking and organizing. Organized a KUG in her native city Kyiv because she believes in Knowledge Sharing and Collective Intelligence. For her everyday job, she's building Static Code Analysis tools for Java/Kotlin/Scala and other languages.
Mario is a Java programmer and architect with a more than a decade’s experience. He has worked in Italy and Germany, and is currently in Switzerland involved in (and often leading) many projects in different fields, such as advertising, e-commerce, and insurance. His main interests in Java technologies are in multi-threaded programming and distributed computing, performance optimization, enterprise-level servers and frameworks, functional programming, and the emerging Java compatible languages like Scala, Groovy, and JRuby. Mario is also one of the leaders of the Java User Group Lugano
Mathieu ANCELIN is a developer at SERLI, specialized in web programming and modern web frameworks with good knowledge of Java EE technologies. Mathieu is involved in several open-source projects like GlassFish and Weld, and also leads some like ReactiveCouchbase and Weld-OSGi; he is a member of the JSR-346 expert group (CDI 1.1), a member of the OSGi EEG group, and part of the Poitou-Charentes Java User Group team.
Mathilde Lemee is a software engineer and architect with expertise in Java and enterprise technologies. She is dedicated to fostering good development practices and knowledge sharing.
Maxime is a developer/architect Java at Redsen and has worked in various sectors. Passionate about development and best practices, he loves sharing his knowledge. He also leads GenevaJUG.
Michael is an engineer and a developer advocate at DataStax where he actively works to improve Cassandra. At ease with both Enterprise Java and lower level technologies, he specializes in distributed architectures and topics such as NoSQL, search engines, and data processing. He often speaks about NoSQL in conferences and User Groups and loves to write about his favorite topics.
Since 2006, I have held the position of study and development engineer in Java / J2EE. Passionate about computing and technological progress, I invest technically in projects, always seeking innovation: both in programming and in proposing solutions.
Developer Advocate with 15+ years experience consulting for many different customers, in a wide range of contexts (such as telecoms, banking, insurances, large retail and public sector). Usually working on Java/Java EE and Spring technologies, but with narrower interests like Software Quality, Build Processes and Rich Internet Applications. Currently working for Exoscale. Also double as a teacher in universities and higher education schools, a trainer and triples as a book author.
Java developer, weekend athlete, I work for SonarSource in the Language team, specifically on the Java plugin. His blog: [https://plus.google.com/113599407874313554000](https://plus.google.com/113599407874313554000)
Nicolas Piguet is a Principal Software Engineer at Swissquote. After having published his first open-source software at the age of 16, he graduated from EPFL in 2006. He has since then worked on designing, re-designing, architecting and building multiple stock, forex and crypto trading platforms. He has spent his last 10 years applying his skills in Domain-Driven Design, resilient architecture and low latency systems to help other teams improve the performance and reliability of their own applications. As a system design evangelist, Nicolas advocates for clean architecture. His motto, 'Less is more,' reflects his belief that simplicity and elegance in design lead to the most robust and reliable architectures.
Nicolas Remond is a software engineer with expertise in domain-driven design and clean architecture. He is passionate about designing systems that are both maintainable and efficient.
Oleg is an R&D and Automation engineer with Hardware/Embedded background. He started using Jenkins in 2008 and participated in many large-scale automation projects. In the Jenkins project, Oleg maintains the core, Remoting and many plugins. He also organizes events like meetups and GSoC. At CloudBees he works on improving Jenkins architecture and platform reliability. Oleg also has a PhD degree in Hardware Engineering and contributes to the LibreCores project.
Olivier Gaudin is a software expert with expertise in code quality, DevOps, and software metrics. He has founded and led companies focused on improving software quality.
Olivier Lange is the founder and managing-director of Le Petit Atelier de Génie logiciel, a software consultancy helping teams to accelerate their development processes and evolve legacy systems. We provide advisory, business analysis and do craft ad hoc software — we build full-fledged apps, mostly business intelligence or data lineage monitoring dashboards, fill functional gaps and move complex datasets between systems. Over the course of 18 years, we realized 130 assignments, ranging from 3 days to 24 months, for small and medium businesses, private and public institutions in Switzerland, France and Luxembourg— such as Lombard Odier TBI & Asset Management, Radio Television Suisse-romande (RTS), Office fédéral des routes (OFROU), HEI, Pro Helvetia, University of Geneva. Next to our assignments, we run weekly and yearly code retreats, to step aside and take time, to research, learn and practice advanced subjects and pioneering technologies. We're currently focusing on reactive data flows, graph databases and visualizations of complex linked-data structures and multi-layered graphs. Join us at our Gōng-fu I/O weekly hack sessions — you'll find other like-minded « data-nauts! »
Olivier Tavard is co-founder and developer at France Labs, an innovative startup founded in late 2011 in Sophia-Antipolis. The company focuses on open source search engines for enterprises, particularly Apache Lucene/Solr and Elasticsearch. Olivier has several years of experience with Lucene, Solr, and Datafari search engines. Finally, Olivier manages the company's R&D and works on the development of Datafari, France Labs' open source search engine for enterprises.
Pablo Tamarit is a software developer with expertise in various programming paradigms and technologies.
Pascal Romanens is a software developer and architect with expertise in web technologies and system architecture.
Hello! I'm ready to help. What would you like me to assist with? You can: - Ask me to help with code in your project - Request a specific task or feature - Get help with debugging or testing - Ask questions about the codebase What would you like to work on?
Entrepreneur, co-founder of OCTO Technology, co-founder of IT University, founder of Octopus Microfinance, founder of NotreBanque, author, speaker, he promotes the idea of user-friendly computing: systems designed to break down organizational silos, empower individuals, and support self-organized teams. In 2005, he founded the Octopus initiative, the first open-source microfinance platform. Octopus is a global community of expertise in lean and agile methods, aimed at improving access to financial services for the poorest. He participated in the creation of BabyLoan, the first French peer-to-peer microcredit operator. In 2010, he deployed Lean techniques as CIO of Bred Banque Populaire. Since 2011, Pierre has been managing NotreBanque, a company aimed at providing simple, affordable, and transparent community financial tools.
Pierre-Yves is CTO and co-founder at Exoscale where he is responsible for architecture and strategic technology choices, relying on experience in the architecture of very large corporate system as well as technical product design in several startups. Pierre-Yves is an active member of the open-source community with key contributions to OpenBSD, collectd, and riemann amongst others.
Randall Hauch is a Principal Software Engineer at Red Hat, and is the founder and project lead of the ModeShape open source project. Before joining Red Hat, Randall developed semantic web applications at Revelytix, and data integration/federation and metadata management software at MetaMatrix (now part of Red Hat). He is a recovering rocket scientist and structural dynamicist.
Rodrigue Le Gall is a developer with expertise in enterprise technologies.
Romain has been a Java and JavaEE developer since 2010. He enjoys contributing to the improvement of open source solutions, particularly Apache products. Romain has been actively involved in the development of Apache TomEE since early June 2011 and notably originated the creation of BatchEE and Sirona projects at Apache. He enjoys sharing his opinions, tests, and discoveries on his blog [http://rmannibucau.wordpress.com](http://rmannibucau.wordpress.com). You can follow him on Twitter [@rmannibucau](http://twitter.com/rmannibucau)
Sacha was born in Neuchâtel, Switzerland and graduated in 1999 from EPFL. It was during Sacha’s studies in 1996 that he started his first consulting business - Cogito Informatique. In 2001, he joined Marc Fleury’s JBoss project as a core contributor and implemented JBoss’ original clustering features. In 2003, Sacha founded the European headquarters for JBoss and, as GM for Europe, led the strategy and partnerships that helped fuel the company’s growth in that region. While in this position, he led the recruitment of some of JBoss’ key talent and acquisition of key technology. In 2005, he was appointed CTO of JBoss, Inc. and as such, oversaw all of the JBoss engineering activities. In June 2006, JBoss, Inc. was acquired by Red Hat (NYSE:RHT). After the acquisition, Sacha remained JBoss CTO and played a crucial role in integrating and productizing JBoss software with Red Hat offerings. In 2007, Sacha became co-General Manager of Red Hat’s middleware division. He ultimately left Red Hat in April 2009. Following a period of research, Sacha became convinced that public cloud infrastructure would lead a fundamental IT paradigm shift and that middleware would play a key role in that shift. As a result CloudBees, Inc. was formed in April 2010.
I am a Principal Software Engineer and System Analyst at Swissquote based in Gland, Switzerland. My responsibilities include coordinating the cross-team and cross-departmental efforts as well as participating in building a system that fits both business and technical needs. In addition, I am also a deeply passionate eco-optimist who is certified in GreenIT. As a responsible and eco-conscious IT professional, I try to encourage my colleagues at work to remain aware of the environmental impact of IT and to integrate good practices into their daily routines.
Mr. Scott Rich is a Distinguished Engineer and Master Inventor at IBM in Research Triangle Park, NC. He is the Project Management Committee lead for the Jazz Foundation Project, and a founding member of the Jazz project. Mr. Rich is a member of the core team of the IBM Tools Development Council, and was previously development lead for Rational Application Developer.
Sebastian Daschner is a Java freelancer working as a Consultant / Software Developer / Architect and is enthusiastic about programming and Java (EE). He is participating in the JCP, serving in the JSR 370 and 374 Expert Groups and hacking on various open source projects on Github. He is a Java Champion, JavaOne 2016 Rockstar and has been working with Java for more than 7 years. Besides Java, Sebastian is also a heavy user of Linux and container technologies like Docker. He evangelizes computer science practices on [https://blog.sebastian-daschner.com](https://blog.sebastian-daschner.com) and on Twitter via [@DaschnerS](https://twitter.com/DaschnerS). When not working with Java, he also loves to travel the world — either by plane or motorbike.
SĂ©bastien became interested in computers in the early 1980s. After spending some time programming 8-bit processors in assembly, he turned to C and C++ in the Win/Intel world. During the Internet years, he participated in several startups and discovered the world of hacking, buffer overflows, and SQL injections. In the early 2000s, he founded a company specialized in information system security. Since 2007, he has been primarily focused on reverse engineering and forensics, particularly on mobile platforms (iOS and Android), developing solutions that blend high-level languages such as Objective-C or Java with C++ and ARM assembly.
SĂ©bastien works at Pivotal as a member of the Spring Framework development team. He is part of the MiXiT conference organization ([@mixitconf](http://twitter.com/mixitconf)).
SĂ©bastien is a Java/JEE software architect and ALM/DevOps consultant at SERIAL Development - Geneva office. Over the past ten years, he has worked on numerous development projects in the Java/JEE/Groovy ecosystem. Through experience, he specialized in backend architecture and application performance management. Passionate about technology, he has a critical eye on various activities in the application lifecycle. He actively participates in the development of SERIAL's Software Engineering division, particularly on DevOps topics - organizational issues and tooling - and on the Software Factory.
Sebastien Goasguen is an experienced software engineer and architect with expertise in cloud technologies, DevOps, and container technologies. He has contributed to major open source projects.
Sébastien Jarrin is a web developer at Hortis. He is a former backend developer who gradually migrated to the frontend for the thrill of it… and he absolutely doesn't regret it! He worked for several years at Kelkoo and Yahoo! with Vincent Attiogbé, then moved to real estate at Drimki. A passionate PHP enthusiast, he also develops personal projects in Symfony2 and regularly plays with JavaScript frameworks like AngularJS.
Stéphane has a thing for code quality and robustness. He’s been spreading the word for more than ten years while developing large scale Java enterprise applications in the geospatial, financial, or logistics sectors. An Apache Maven PMC member since 2006, he joined the core Spring Framework development team early 2014 and focuses on Spring Boot lately. During his free time, he loves travelling around the world.
Stephen Chin is a Java Ambassador at Oracle specializing in embedded and UI technology, co-author of the Pro JavaFX Platform 2 title, and the JavaOne Content Chair. He has been featured at Java conferences around the world including Devoxx, JFokus, OSCON, JFall, GeeCON, JustJava, and JavaOne, where he thrice received a Rock Star Award. Stephen can be followed on twitter [@steveonjava](http://twitter.com/steveonjava), reached via his blog: [http://steveonjava.com/](http://steveonjava.com/), and his hacking adventures can be seen on: [http://nighthacking.com/](http://nighthacking.com/)
@Tamas, coding in Visual Studio and software developer at SonarSource. @Tamas leads the development of the SonarLint for Visual Studio
Java/JEE developer for 7 years. I am from Paris, 31 years old. Based in Geneva for almost 3 years. Consultant at Qim info for a little over 2 years.
Thierry Boileau is a developer and architect with expertise in web technologies and scalable systems.
Thierry Chatel is an independent consultant and trainer, specialist in web application architecture and the AngularJS framework, and a member of the Google Developers Experts network since 2014. He is deeply committed to good design and development practices that support software quality. This is why he was attracted from the start by the great qualities of the AngularJS framework, which now represents the majority of his activity. He performs application audits, technical support, and has already led over 50 AngularJS training sessions for companies of all sizes, from small businesses to large organizations. Website: [http://www.methotic.com/](http://www.methotic.com/) Twitter: [@ThierryChatel](http://twitter.com/ThierryChatel)
Thierry has been a Java developer for several years and is a software and quality engineer at General Electric Healthcare. He is also a contributor to the open source project [JFXtras](http://jfxtras.org), offering new visual components to use when developing JavaFX applications. You can find him on his [blog](http://thierrywasyl.wordpress.com) and on Twitter [@twasyl](http://www.twitter.com/twasyl)
Touche à tout du monde java, après avoir roulé ma bosse en tant que développeur, tech lead et consultant, me voilà maintenant sonarsourcer depuis 3 ans.
Tugdual "Tug" Grall is Technical Evangelist at Couchbase and a passionate developer. He currently works with developer communities in Europe to facilitate NoSQL adoption. Tugdual contributes to Couchbase's Java and NodeJS development kits. Before joining Couchbase, Tug was the CTP at eXo, the company that created the cloud development tool [codenvy](http://www.codenvy.com/) and the eXo Platform social platform. Previously, Tugdual worked as a product manager and developer in the Oracle Fusion Middleware team on the Java EE platform. Tug has participated in numerous DevoxxFR, FOSDEM, Google I/O, JavaOne conferences and many meetups/Java User Groups. Tugdual is a co-founder of NantesJUG, which has been organizing monthly meetings around the Java ecosystem since 2008. When he has time, he maintains a [blog](http://tugdualgrall.blogspot.com/) and an application deployed on Google App Engine: [resultri](http://www.resultri.com/).
Dr. Venkat Subramaniam is an award-winning author, founder of Agile Developer, Inc., 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 (co)author 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 agiledeveloper.com. You can reach him by email at venkats@agiledeveloper.com or on twitter at @venkat_s.
His 15 years of experience at Kelkoo and Yahoo! gave him strong expertise in web development, e-commerce, and Agile methodology. First a Webmaster, then a Backend developer (Java Web Services), he later specialized in Frontend programming (PHP Symfony) and in creating websites using advanced JavaScript and CSS frameworks (Backbone.js, Foundation).
Vincent has over 20 years of experience in the IT sector, with a predominance in development, technical architecture, and integration. Over the past ten years, Vincent worked in the private banking sector in a technical architect role directly linked to the strategy of the technical platform, its implementation, and its evolution. The past 2 years have seen him invest significantly in containerization and orchestration technologies, devops, event-driven architectures, and microservices. When he doesn't have his hands in work, Vincent enjoys hiking in the Alps on foot, skiing, and often doing both at the same time.
William Drai is a software engineer with expertise in web and mobile technologies.
Xavier has been passionate about code since childhood, loves continuous learning, and shares his passion with the community. This is why he leads GenevaJUG, Devoxx4Kids in Geneva and Paris, and wears a red vest at Devoxx France. After successively being a developer, agile project manager, technical director, and product manager, he is now a Full Stack developer at SonarSource.
Since 2006, I have held the position of study and development engineer in Java / J2EE. Passionate about computing and technological progress, I invest technically in projects, always seeking innovation: both in programming and in proposing solutions.