Of course you don't use Linkedin Sergey. You never worked for any reputable businesses. You never created any software that matters. You never were part of any serious software development organisation. There is nothing to link in LinkedIn. You have absolutely nothing that you could display on Linkedin. You are a piece of shit scammer who hides in the shithole of Belarus and you scam the greedy idiots from there with nonsenses like JINN and the non existent IoT application. Your nonexistent real business and real life technology achievement and your blatant scams aren't LinkedIn materials.

Your scammer business partner, David boy, the chief wanker of Norway? Similarly, he is unable to display anything in Linkedin. No academic background, no experience whatsoever nor a work experience reference from anybody. He never worked for any reputable company, except he was cleaning shit in McDonald's before he decided it is time to scam money from the greedy idiots. His only "business activities" are the blatant scams of Iota and JINN.

There is a reason scammers like yourself and David boy aren't in LinkedIn.