Marek Olszewski is the CEO and co-founder of cLabs, the creators of the Celo blockchain, which is an Ethereum Layer 2 and mobile-first blockchain network designed for fast, low-cost payments globally. Olszewski and Reinsberg co-founded cLabs and the Celo Foundation, where Olszewski serves as the CEO of cLabs.
Marek Olszewski became president of Valora, a mobile-first Web3 wallet for sending and saving cryptocurrencies.
In August 2017, Olszewski and Reinsberg co-founded cLabs and the Celo Foundation,