I took part as senior full stack developer in two successful startups (document flow for attorney, and risk management), during about six years worked on trading system (commodities), made architecture and implemented REST API to integrate the legacy and modern stack microservices for one of e-commerce retail, took part as senior full stack developer in development, optimization, mentoring junior developers in other e-commerce project, took part as database developer in integrational solutions for biggest mobile provider (statistics, IVR, billing) and insurance company (Customer Relationship Management). 24+ years in IT.