[4] At the age of 17, Kangro launched his first company, an electronics accessories venture SOCKme, which received recognition from the Estonian Prime minister and Norwegian Crown Prince.
[6] After that, he moved to Singapore and took on the role of CFO at Expara, a venture capital firm, where he focused on growing its fintech portfolio.
[6][10][4] In 2016, Kangro founded Change, a fintech firm offering an investment app and multi-asset brokerage platform encompassing cryptocurrencies, stocks, derivatives, and yield products.
[10][13][14] In 2021, Change was valued at 175 million, and the Estonian newspaper Äripäev estimated Kangro to be the 43rd richest person in Estonia at the age of 28 years old.
[17][18][19] In 2023, Ingmar Mattus, the founder of Tickmill, a UK-based brokerage, acquired 7.8% shareholding in Change from Kristjan Kangro.