Mostly Ruby/Ruby on Rails, I want to build it using Peatio, by default Peatio is already configured to work with the Bitcoin dameon, I just wanted Bitcoin configured to work with Bitgo like the Medium post describes. The main task would be implementing the altcoins into the exchange. The alts I want are Monero, Ethereum, Tether, and Lisk. Was going to do Ardor but no good documentation is available yet.
Here's some of the Peatio documentation quoted
https://github.com/peatio/peatio
Officially supports
Ubuntu Linux 14.04 LTS
Mac OS X Mavericks
Ruby versions
Peatio requires Ruby (MRI) 2.1.0+. You will have to use the standard MRI implementation of Ruby.
Hardware requirements
CPU
2 cores is the recommended number of cores and supports up to 100 users
4 cores supports up to 1,000 users
8 cores supports up to 10,000 users
Memory
4GB is the recommended memory size and supports up to 1,000 users
8GB supports up to 10,000 users
Storage
If you run bitcoind at local, the necessary hard drive space largely depends on the size of the blocks of Bitcoin network (30G for now). 100G is recommended at start.
Supported browsers
Chrome (Latest stable version)
Firefox (Latest released version)
Safari (Latest released version)
IE 10+
Development Dependencies
RabbitMQ is Peatio's backbone, it's the message broker doing all the message exchanges between daemons.
Peatio use Phantomjs to test JavaScript.
PhantomJS