Hi, I can do this for you. I've written Cryptopia, Binance, and GDAX bots for my own use, so I'm familiar with the space. I just have to get familiar with the BitMEX API and apply what I already know that that.
I provide full product support to all my clients. I try to anticipate all edge cases, but with any type of scraping or botting there are always anomalies that come up later that you can't account for during the initial project creation, so I make myself available to fix anything unexpected even after the project ends. I'm also looking for longer term opportunities so this could be a really good fit.
I only ask for an initial project fee because freelancer charges me up front and this covers the fee.
I look forward to working with you.
Regards,
Mark