Mathäus Zingerle

Mathäus Zingerle is a Software Engineer focusing on mobile technologies. Before developing iOS applications full-time for the vienna based app agency Tailored Apps ( he worked in the field of Mobile Augmented Reality as part of his master thesis. The results of his master thesis were published in a paper (, which was written as a cooperation between Vienna University of Technology and Graz University of Technology.

Besides developing mobile applications he is interested in server-side applications written in Ruby/Ruby On Rails.
Whenever he has got some time left, he is out to explore the world with his camera and/or follow his passion for sports.


Ioan Eugen Stan

Ioan Eugen Stan is passionate about IT and free software. He graduated the Firefighter Faculty at the Police Academy of Bucharest, and after one year of active service as a Firefighter he decided to pursue his passion in technology. Currently he works as a technology consultant and is involved in various communities and open source projects, such as Apache Software Foundation, Bucharest JUG, Debian project. From time to time he also speaks about his passions at conferences or JUGs.

Apache Software foundation (Apache James, Apache Provisionr)
JUG București –
Debian Project – Debian Contributor


Subby Angelov

Being a Software Developer and an Operational Team Lead during the years, Subby has been responsible for leading a team engaged in support of multiple version product with various international customers. He has been implicated in development of highly varied functionality using different technologies like Java, .Net, console scripting, Oracle, etc. separately and combined. Currently Subby is a Team Lead at Nemetschek Bulgaria responsible for managing overall work of heterogeneous team of 20 software engineers working with different technologies on different projects with various stakeholders from all over the word. He is a black belt Atlassain ninja having a great experience with their products.


Anna Ioceva

Anna has 12 years of experience as a Team Lead and Solution Architect at Nemetschek Bulgaria. She has been working with several different client sub-divisions and projects, located worldwide. Anna managed a team of about 20 software engineers, providing services and support in areas like – product development, project management, specifications development, software architecture and design, software implementation, project validation, continuous integration, live systems support, processes improvements, innovations and more. Currently she is leading the Atlassian Experts team at Nemetschek Bulgaria into delivering consultancy and trainings, providing licenses and more to the regional market. Anna’s key focus is on Continuos Delivery and Enterprise Agility.

What she says about herself is: “Gaining wisdom through the years of experience, without losing flexibility and readiness to accept changes, living with an open and positive attitude to life”.


Atanas Raykov

Atanas Raykov is manager Consumer Mobile Products and Value Added Services at VIVACOM. He is responsible for the mobile strategy and innovation efforts of the company. He has overseen numerous successful product launches, which have made VIVACOM the leader in the mobile data in Bulgaria. Currently he and his team are engaged in building a local eco-system for development and monetization of Android smartphone services through VIVA Apps Market place and through operator charging SDK for third party apps, which is due to be released by the end of the year.


Eleonora Georgieva

Eleonora Georgieva is the Android & Java Practice Manager of MentorMate. Eleonora has been developing mobile applications and web systems for over six years in Sofia, Bulgaria. She started her career as Java web developer before Android become so popular. She then decided to switch her focus to Android mobile development.

Eleonora is an expert at Android and Java Development. She is known for her Android, BlackBerry, Java, JSP, JSF, Hibernate and database expertise.


Simeon Petkov

Simeon began his career as a software developer in the dawn of Java in the late 90ies. The trip led him through some academic paths spending some years at the Universidad Politécnica de Madrid and the National University of Ireland, Galway concluding it with a MSc in Computer Science from the Vienna University of Technology. In the following decade he worked on a variety of projects as a developer, architect and consultant including a ground-control system for Brussels Airport, trading systems for the Swiss energy market, banking and logistics solutions for German and Austrian companies. Back in his home-town Sofia he is currently leading Methodia’s development team on a mission to raise the technological infrastructure of a nation-wide operating gas-distribution company to cutting-edge level.


Dmitry Alexandrov

Dmitry is a passionate Java developer. Through his 7+ years career he has gained a huge experience with different web technologies. His areas of interest include the wide range of Java-related technologies (JSF, Spring Framework, JMX, JAX-RS, JAX-WS), enterprise solutions, cloud computing technologies, as well as non-Java like NodeJs and NoSql. He’s also passionate about Eclipse plug-ins development process. He’s big enthusiast of distributed multinational, multi location software development. At his free time he’s trying to contribute to OpenJDK and supports his own opensource project.


Andrew Lombardi

Andrew Lombardi is a veteran entrepreneur and software developer. His parents taught him to code while barely able to read on an Apple // he still wishes he had. He invented the Internet and Nutella while drinking Rakia and being fed grapes. He’s been running the consulting firm Mystic Coders for 13 years, coding, speaking internationally and offering technical guidance to companies as large as Walmart and companies with problems as interesting as helicopter simulation. He firmly believes that the best thing he’s done so far, is being a great dad.


Martin Toshev

Martin is a Java enthusiast. He is a graduate of Computer Science from the University of Sofia. He is also a certified Java professional (SCJP6) and a certified IBM cloud computing solution advisor. His areas of interest include the wide range of Java-related technologies (such as Servlets, JSP, JAXB, JAXP, JMS, JMX, JAX-RS, JAX-WS, Hibernate, Spring Framework, Liferay Portal and Eclipse RCP), cloud computing technologies, cloud-based software architectures, enterprise application integration, relational and NoSQL databases. You can reach him for any Java and FOSS-related topics (especially Eclipse and the OpenJDK).