API integration for Channel manager with OTAs

I am building a channel manager to manage inventory and rates from hotels. It is going to be an SAAS application. I want someone to identify and integrate below mentioned Online Travel Portals with our system. It should be direct API integration where the inventory(calenders) and rates can updated in real time. [login to view URL] 2. Goibibo and MakeMyTrip 3. Booking dot com 4. Yatra 5. Travelguru 6. Cleartrip 7. Expedia 8. Trivago I am looking for someone to do the API integration to the OTAs.. I am also flexible on the number of OTAs you can integrate. Eg: djubo,Maximojo , axis rooms Only people who has prior experience in developing 'Hotel Channel Manager' apply.