Worked for a long time on 4 Shopify apps projects, all of which are now successfully developed. Among them is Aftersell, which is one of the leaders of upsell apps in Shopify app store; I was being lucky to participate in developing cutting-edge features added by Shopify, like post purchase feature; Participated in many project discussion, meetings; suggested a lot of solutions for project requirements; Was a mentor for some time plus onboarded many developers into projects built all by myself or into projects that were built before me; Made a lot of investigation into new/existing APIs, documentation, estimated a lot of projects based on that; I'm able to maintain myself and my family all on my own; Were able to taught my friends to learn programming and teach them not only technology stack but a problem-solving skill in general.