We are developing complex and highly loaded projects using Ruby on Rails (our basis), we use React (for front end)/ Redux (for back end), as a vendor between back and front end we use api (RestAPI/GrafQL)
Node.JS,DevOps we use for web-site’s cloud like in amazon’s infrastructure;
CoreOS, Kubernetes, Docker, Terraform technologies which we use attached to DevOps.(specially for very many users and for its reduction of server load).
For blockchain technology we use Ethereum, EOS, Tron, Minter

Our software house is very interested in your project, we are serching for new connections and partnetship. We have been on the market for 13 years.
This is our web-site https://genesix.pro
This is our portfolio: https://drive.google.com/file/d/1bR0cIhgg_L6P-waVAGqFlCtdoDTVuVsJ/view