Sergey Grybniak is a serial entrepreneur and digital marketing expert. He has been providing digital marketing services for over 10 years and has successfully completed more than 500 projects. With his vast experience in launching and promoting e-commerce platforms, Sergey helps small- and mid-sized businesses establish a thriving web presence. He is the founder of the digital marketing agency Clever-Solution(link is external), and of online B2B/B2C marketplace Opporty.