Zvonimir Zelenika is finishing his B.Sc.E.E at department of Telecommunications of Faculty of Electrical Engineering and Computing in Zagreb (on topic of "Systems for multimedia production and distribution with metainformational models of multimedia content"). Since 1996. he is a student researcher in CARNet's Laboratory for Research and Development, working on development and application of ATM video-conferencing and hypermedia applications in CARNet network. Currently he's a project manager of Media on Demand project, development of multimedia server system and services for CARNet community. Also, he worked on several projects in new media technologies with TrioMedia Interactive, Zagreb based multimedia factory.

In 2000. he worked on the development and acceptance of future telecom services in British Telecom PLC. He's active in TERENA TF-STREAM videoconferencing/streaming task force and Darwin/QuickTime Streaming Server development.