Sheng is an experienced web developer with 9 years of expertise, primarily focusing on web application development. His areas of specialization include web apps (PWAs and desktop apps), blockchain technologies. He's worked with renowned brands such as ensemble.store, Booking.com, Japan Rail Pass, DealDash, Smart Token Labs, and many other small and large startups. Sheng built one of Poland's largest travel web apps, with over five million unique users.