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If their latest “REST” API is an indication of their tech you don’t want to work there anyways.

Oh dear, I haven't used any FedEx APIs in a while. but when I did it was XML based (maybe SOAP) and the ordering of some of the fields mattered!! This was of course not documented anywhere.

Ahh, here's a great example of the mess it was: https://stackoverflow.com/a/40315400/137695

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