Dmytro Ryabko Email & Phone Number

Denpasar Area, Bali, Indonesia

Preparing mobile applications (Android + iOS), Web and Desktop apps, REST services, web backends for various clients all over the world. Presales: * Communication with the client (of necessity): collection of information about project, analysis, proof of information requests, organization of the analysis process of customers’ requests (interaction with technical experts to assess, approve of technology evaluation, time and resources)Managing* Team of 10+ developers. * Agile, Kanban practices.Developed:* 11 mobile apps - Native iOS, Android, HTML5 hybrid apps, mobile web apps.* 14 web sites, private cms, monitoring system, statistics gathering web app: 1) PHP + CSS3, JavaScript, HTML5. 2) Java, Spring, Hibernate, Redis, MongoDB + Angular. 3) Java Play + Angular.* about 10 desktop apps - primary on Java, Swing, SWT.And continue...

Opening new Beloved store.Finding place, negotiating with franchise owner, preparing stuff, hiring sallers, buying goods, implementing automation system for video recording and gathering statistics.http://beloved.com.ua

Kyiv, Ukraine

Opening a new open space art-cafe near M. Olimpiiskaya in Kyiv. Was renovated 230 m2, done new space design, bought furniture, developed accounting software, hired 7 administrators, done marketing investigation, SMM, negotiated online media. Managing business with about 2000 client visits per month.To 1 May 2014 we had:1382 events, evenings, training etc17 440 visitors56 000 hours spent insidehttp://olimp.besednizza.com

Cairo, Egypt

Managing technical aspects, investigate and introduce architecture changes to egyone ecosystem. I joined and lead the team, which developed real time collaboration (RTC) server. It was an instant messaging (IM) and groupchat server with specific requirements written in Java. This server provides supports the following features:- Web-based administration panel- SSL/TLS support- Database connectivity (i.e. embedded HSQLDB or other DBMS with JDBC 3 driver) for storing messages and user details- Platform independent, pure Java- Can support more than 50,000 concurrent usersUsed: Linux, maven, modified XMPP protocol, Jetty, JSP, Websocket, NIO, Mina, multithreading, profiling , postgreSQL, API.Also Applet, Desktop, Web clients for ordinary users and for moderators have been developed. They includes full interface customization, controls for chat, localization i18n, file sharing, voice messages, etc.Used stack: applets, AWT, Swing, Javascript, Meteor framework, CSS.

Ukraine

Developing and managing team for Verison, Motorola, AT&T projects."Leapstone" telecommunication system:J2EE architecture is in the base of "Leapstone" system. BEA WebLogic cluster are configured to support multiple servers with load balancing, Oracle 9.2 are used in "Leapsotne". Some independent C++ modules are developed for billing and adapter tasks. Multithreading are used for the purpose of scheduled tasks, alarms and message generation."MOST" document flow automation system project:The following technologies were used in the server part of the system implementation: BEA DB Controllers, BEA Page Flow Controllers, EJB (including all types of beans - entity beans, session beans, lookup components, Servlets. The report generation system was developed for creating reports in different formats - HTML, Excel (with charts and extensive formatting) and PDF. Responsibilities: offshore-onsite coordination, team leadership, interaction with customer for requirements clarifications, high-level and detailed design discussion, acceptance testing, deployment issues resolutions; system and systems components analysis, development environment set-up, J2EE components development and debugging.

Ukraine

Developing internal J2EE application for Leapstone bought by Motorola later.J2EE architecture is in the base of “Leapstone” system. BEA WebLogic cluster are configured to support multiple servers with load balancing, Oracle 9.2 are used in “Leapstone”. Some independent C++ modules are developed for billing and adapter tasks. Multithreading are used for the purpose of scheduled tasks, alarms and message generation.“MOST” document flow automation system project:The following technologies were used in the server part of the system implementation: BEA DB Controllers, BEA Page Flow Controllers, EJB (including all types of beans – entity beans, session beans, lookup components, Servlets. The report generation system was developed for creating reports in different formats - HTML, Excel (with charts and extensive formatting) and PDF.

Master'S Degree, Applied Mathematics

Language oriented programming and DSL

Bachelor Of Applied Science (B.A.Sc.), Applied Physics And Mathematics

Focusing on programming languages.