I have more than 4 years experience in Ruby On Rails appilcation design and development. Experience: Stack: - Backend: RoR / Ruby (4 years), PHP (3 year), Python (ML libs: Scikit-learn, Pandas), Golang (1 year) - Frontend: Vue.js, AngularJS - DBMS: PostgreSQL, Redis, MySQL, MongoDB - Tools&services: RSpec, Docker, Sidekiq - Administration: Linux, Apache, ngnix