Sergii Kashchenko is the COO at Yellow. Ex-R&D Director of Bitfury and startup COO/Co-Founder with a 16-year track record of engineering leadership in software companies. With Bitfury, Sergii implemented processes for efficient and transparent project delivery of the ASIC miner products. As a COO, he executed a strategic startup transformation and achieved 216% YoY revenue growth. He holds an Executive MBA degree from London Business School.