Ventsy Popov

Speaker 2014

Ventsy Popov is a Technical Evangelist in Microsoft Bulgaria where he focuses on the newest trends round Microsoft Development Platform and positioning its values amongst developers and software companies. Before that, he worked for years on the development field, dealing with technologies like ASP.NET, Windows Forms, .NET Compact Framework, Microsoft SQL Integration Services, Microsoft SQL Reporting Services, Microsoft SQL Server, Oracle Database. Ventsy is a Microsoft Certified Trainer and since 2008 has been participating as a speaker on numerous events and university courses. His latest passion and practice is with Windows Azure cloud computing and Windows Store App development.

Martin Benkov

Speaker 2014

Martin Benkov is senior software architect at with more that 7 years of professional experience.
Has a bachelor degree in computer science from Sofia University, but his passion for programming dates way before that.

He’s keen on building high performant applications which are optimized in all layers – from page load time in the frontend, through algorithms and data structures in the business layer, to SQL query optimizations.

Geertjan Wielenga

Speaker 2014

Geertjan Wielenga is a NetBeans product manager working at Oracle, focused on Java development and HTML5 development with NetBeans IDE and the NetBeans Platform. Geertjan is a Java technology enthusiast, primarily interested in Java desktop technologies, in particular, application development on the NetBeans Platform.

Radoslav Veselinov

Speaker 2014

Radoslav Veselinov is a software developer with 10+ years of experience in big enterprise projects.

He was lately seen leading a team of software engineers which took part in building of Cisco’s social platform. He was most recently working on several innovative, highly confidential projects.

His main interests are in the sphere of Cloud computing and building of bug free and highly scalable software solutions when he is not riding his motorbike.

Stephane Epardaud

Speaker 2014

From deep into the Nice mountains, Stéphane works for Red Hat on the Ceylon project.

Passionate hacker in Java, C, Perl or Scheme. A web standards and database enthusiast, he implemented among other things a WYSIWYG XML editor, a multi-threading library in C, a mobile-agent language in Scheme (compiler and virtual machines), and some Web 2.0 RESTful services and rich web interfaces with JavaScript and HTML 5.

Eager to share, he is a frequent speaker at various conferences such as the Scheme Workshop, Nice University, Devoxx, JavaOne, JavaZone, JAX, many Java User Groups as well as the Riviera Java User Group he founded with Nicolas Leroux. A long-time open-source user and advocate, he is committer on RESTEasy, author of jax-doclets, stamps.js and various Play! Framework modules, and developer on various Ceylon projects for Red Hat.

John Davies

Speaker 2014

John is co-founder and CTO of C24, a London based software company created in 2000, C24 was sold to NASDAQ company Iona Technologies in 2007 and re-acquired back in 2011. C24 has the vast majorities of the world’s largest investment banks as customers, specialising in complex messaging and integration, standards like SWIFT, ISO-20022, FpML and FIX as well as the bank’s own internal formats. C24 has recently release a new product that creates binary versions of these messages reducing memory and network usage by over 20 times while significantly increasing performance at the same time.

In the past John has been global chief architect at JP Morgan, BNP Paribas and was the original architect behind Visa’s (now Visa Checkout). John has co-authored several Java books and is a frequent speaker at technical and banking conferences around the world. He is married to a French wife and has 3 boys (11, 13 & 16) who all love travelling (as long as there’s internet).

Mani Sarkar

Speaker 2014

Mani Sarkar is a passionate Java/JVM developer currently living and working in London, UK, an LJC Associate, and an LJC Advocate to the @adoptopenjdk & @adoptajsr programs, JCP Member, OpenJDK contributor (submitted a number of patches), active member of a number of developer communities, speaker, blogger, and tweets interesting topics. Contributor to the Adopt OpenJDK and sister projects like Betterrev. He sees himself working in the areas of core Java, JVM, JDK, Hotspot, Nashorn and Performance Tuning. In his free time he also works on open-source projects one of them being in relation to RESTful APIs, others can be found on his personal github and bitbucket accounts. He is also an advocate of software craftsmanship principles like BDD and TDD, practices like pair-programming & collaborations – fervent user of SonarQube, analysing code quality on a regular basis. A regular attendee and presenter at many talks, conferences and hands-on-workshops in and around the UK and other parts of Europe.

Josh Long

Speaker 2014

Josh Long loves software. He is the Spring developer advocate at Pivotal, a contributor to many of the Spring projects (including Spring Boot), a contributor to other open-source projects like Vaadin and Activiti, and author of 5 books, and 2 best-selling videos on Spring.

Find him on Twitter (@starbuxman), or on the web (

Reza Rahman

Speaker 2014

Reza Rahman is a long time former independent consultant and now officially a Java EE/GlassFish evangelist at Oracle. He is the author of the popular book EJB 3 in Action. Reza is a frequent speaker at Java User Groups and conferences worldwide including JavaOne and NFJS. He is an avid contributor to industry journals like JavaLobby/DZone and TheServerSide. Reza has been a member of the Java EE, EJB and JMS expert groups. He implemented the EJB container for the Resin open source Java EE application server.

Reza has over a decade of experience with technology leadership, enterprise architecture, application development and consulting. He has been working with Java EE technology since its inception, developing on almost every major application platform ranging from Tomcat to JBoss, GlassFish, WebSphere and WebLogic. Reza has developed enterprise systems for well-known companies like eBay, Motorola, Comcast, Nokia, Prudential, Guardian Life, USAA, Independence Blue Cross and AAA using EJB 2, EJB 3, CDI, Spring and Seam.

Arun Gupta

Speaker 2014

Arun Gupta is Director of Developer Advocacy at Red Hat and focuses on JBoss Middleware. As a founding member of the Java EE team at Sun Microsystems, he spread the love for technology all around the world. At Oracle, he led a cross-functional team to drive the global launch of the Java EE 7 platform through strategy, planning, and execution of content, marketing campaigns, and program. After authoring ~1400 blogs at on different Java technologies, he continues to promote Red Hat technologies and products at Arun has extensive speaking experience in ~40 countries on myriad topics and is a JavaOne Rockstar. He also founded the Devoxx4Kids chapter in the USA and continues to promoting technology education amongst kids. An author of a best-selling book, an avid runner, a globe trotter, a Java Champion, JUG leader, he is easily accessible at @arungupta.