Hello, How are you today? I have seen your site KB, and I think that, I am the best candidate to do this job, because I have experience of working in telco company and work with their various products development and integrations, I also get the chance to work with Hazoor Bux(HB) and Muneeb as a volunteer in PHP in year 2012.
As far as REST API is concern I have developed many applications on REST API at Synety my previous company and I have attached experience letter as attachment.
I have seen your API which is divided in two sections a) Get List of Available DIDs and b) Purchase a DID and the other thing which i thought about the security is concern is OAuth, so there are many other question which was unanswered, because we have to redesign the APIs and actually estimate about the time and the bid. (which is might be fixed)
Thanks and Regards,
Syed Asad Ali. less