The startup built a back-end operating system platform that handles everything from incorporation, government, accounting, taxes and visas to regulatory compliance. The startup doubled its client portfolio size during the pandemic; the interesting point is Sleek clients appear to be less impacted by the overall economic turmoil, Barthel told TechCrunch. The company is also planning to release products addressing remittances and card issuance. French entrepreneurs Julien Labruyere and Adrien Barthel founded Sleek in 2017 to help entrepreneurs incorporate and operate businesses in Singapore and Hong Kong.