Summary about my experience: Project management, Design patterns, PHP programming, JavaScript programming, Perl Programming, Mysql, PostgreSQL, db optimization for highload, Python programming, Multiprocessing, Statistic algorithms in data mining, Building recommendation algorithms based on user insights, Openstack, Skydive opensource tool (contributed a lot related to UI), python-rope (helped in migration of this project to python3), architector skills: DDD, manage team of 5-10 persons to produce solutions fast and efficiently, Golang, Typescript, Vue.js