Serge Koba is a Ruby Team Lead at MobiDev, USA/Ukraine. He graduated from the Kharkiv National Aerospace University with a degree in information technologies. His development experience includes eight years of work in web, mobile, IoT and blockchain. Serge was an EU & UA Web Challenge winner. He is a TechDay London attendee and speaker at Experts Day Conference and meetups. Serge is an active IoT blogger with a series of articles on smart home, custom IoT-related devices and robotics with articles published on his personal blog and MobiDev's corporate blog.