In early 2015, Xander founded his company Xander Kostroma Fashion Ltd. He continued to work under license until early 2018 giving his notice to concentrate on his own brand, simply called; Xander Kostroma®. 6 months later, Xander launched a small capsule collection of earrings and recruited an international team based between Switzerland, China & the UK. Over the course of the next few years, the collections expanded into necklaces, bracelets, pashminas, and homeware.
During the 2020 global pandemic, Xander left Switzerland for Portugal. After some months of exploring the new country, he decided to stay, setting up a home in Lisbon. Xander also signed an agreement with Faire and began to sell his collection wholesale, worldwide.