Unreasonable Fellows

Tatseng Chiam

Cofounder & COO at RideTandem

Tatseng is an Unreasonable Fellow. Tatseng was part of Unreasonable Impact UK & Europe 2023.
Tatseng is Co-Founder and COO of RideTandem, which is on a mission to enable sustainable commuting for all, especially those living outside big cities. Prior to RideTandem, Tatseng was an Investment Director and employee number six at the Global Innovation Fund, a leading social impact investment fund based in London. Tatseng helped to set up several key processes and led multiple investments across Sub-Saharan Africa and Asia deploying grant, debt, and equity financing instruments. Prior to that, he held roles in management consulting at Monitor Deloitte and renewable energy investment banking at Credit Suisse. Tatseng holds a BA Honours degree from the University of Oxford, an MBA from the Wharton School, and an MPA from Harvard University.