Founder of Blockchain News, The Hackitarians & global expert on innovation, Kastelein is an award winning publisher & entrepreneur. He has guest lectured at MIT Media Lab, Oxford University, & the University of Koln - sat on media convergence panel @ 2nd EU Digital Assembly in Brussels & worked with global media companies such as the BBC, ABC, CBC, NPO, RTL (DE and NL), Eurosport, NBCU, C4, ITV, Liberty Global, Seven & others on media convergence strategies.

He has judged hundreds of startups for the European Commission H2020 & Innovate UK funding programmes. He's a Fellow of the UK Royal Society of Arts (RSA) & UK Royal Television Society member.

Kastelein has spoken (keynotes & panels) on future of media at events in Amsterdam, Barcelona, Belfast, Berlin, Brussels, Brighton, Copenhagen, Cannes, Cologne, Curacao, Frankfurt, Hollywood, Hilversum, Geneva, Groningen, London, Las Vegas, Leipzig, Madrid, Melbourne, NYC, Oxford, Rio de Janeiro, Sheffield, San Francisco, San Jose, Sydney, Tallinn, Vienna, Zurich and been on advisory boards of TEDx Istanbul, SMWF UK, Apps World, and judged @ AIB awards, Social TV Awards Hollywood, Banff Rockies, TV Connect & IPTV Awards.

Publisher of TV App Market and founder of The Hackfest which were acquired in 2013.

A Creative Technologist & Canadian (Dutch/Irish/English/Métis) his career ranged from the Canadian Native Press (Arctic) to the Caribbean and Europe. He's now writes occasionally for Wired Insights, Guardian & Virgin & his work and ideas have been translated into Dutch, Greek, Polish, German & French.