Hello,
I have built a large number of responsive web-sites and back-end API-Services with my team. I have considerable experience with HTML 5, CSS 3, AngularJS, Angular 2, JavaScript, JQuery. Back-end and API-Services are developing on C#, ASP.NET, MVC5 and Core, Ruby on Rails, NodeJS and DB: MySQL, PostgreSQL, MS SQL Server, Oracle, MongoDB.
I'm sure that I can help you. Please contact me and we will discuss all details.
Best,
Slava