Cassio de Souza Antonio started programming 20 years ago with a Sinclair Spectrum and has since built a career as software engineer and technical manager in Brazil and USA. He has developed and contributed to projects for major brands such as Microsoft, Coca-Cola, Unilever, and HSBC, among others. His startup was acquired in late 2014. Currently Cassio works as a consultant. You can follow him on Twitter (@cassiozen)