Marketing at Startup Wise Guys BusinessTech It is the leading B2B Software accelerator in Europe, located in Tallinn, Estonia. The goal is to build a bridge of innovation connecting startups from around the world to experts from the EU, UK and the US. Co-founder Sand & Serif Sand & Serif is a visual bookmarking site for the coastal community. Designed the website, manage financials, develop new features as well as content, network with advertising agencies. www.sandandserif.com.