McCallum, 25, had a successful amateur career and has represented Scotland many times, but after taking his first professional fight in November 2010, McCallum has only had four fights - his last being a four threes win over Simone 'Lucky' Lucas in December 2012.
Steve Goodwin said: “I am delighted to have signed John. There is no doubt he has the talent to reach the top and we aim to get him there very quickly over the next 18 months.
"John will have his next outing on a Phil Jeffries show on September 28th. I expect to see John fighting around the UK whilst we build him towards title contention. I want to see the Edinburgh community get behind John."
McCallum said: “I am delighted to sign with Steve. He is forward thinking and will create the opportunities for me over the next 18 months.”
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