Founder, CEO, and Master Craftsman at RoleModel Software.

Building custom software for forward-thinking companies

Software Developer/Physicist

Sergii Demianchuk is a Software Engineering Technical Leader at Cisco, where he drives innovation in application security and vulnerability management.

An experienced software developer and entrepreneur with a strong background in building innovative solutions for various industries in Ruby on Rails and React.

Start building with https://launchkit.codes

Copywriter. Marketing Strategist. Community Manager. Emotional Support Human. Professional Cheerleader. Need ideas? Want free, unsolicited advice? Ping me!

Creator of Goby language(https://github.com/goby-lang/goby), also a Rails/Ruby developer, Rails contributor. Love open source, cats and boxing.