Marek Sacha was born on 6 June 1987 in Czechoslovakia. He is a Czech-British businessman. He earned a master's degree at the Czech Technical University in Prague and a second master's degree at Johannes Kepler University Linz in 2011.
He then spent about three years as a consultant at McKinsey. He became the first CEO of Rohlik.cz, the online supermarket Tomas Cupr founded in 2014. He led it through the early period, then transferred his share and left.
Sacha co-founded Cera with Ben Maruthappu. Cera, a home healthcare company, launched in November 2016 and in January 2025 raised $150m, mostly debt, at a valuation above $1bn.
In 2018 Sacha joined XOM Materials, an initiative of Klöckner & Co. Forbes Czech Republic had included him in its 30 under 30 list in 2017.