channel manager - repost

I want to keep rates and availablity up to date on all the different Booking Engines (booking dot com / expedia dot com / hotel dot de / venere dot com ..etc) for integration with hotel software . I am looking for the simplest way to close/reset all channels in a date range. I´m looking for a web developer with excellent programming skills (only developer with proven experience with the booking dot com XML API will be considered) i have my own hotel software. so i want channel manager integration with my pms so my customer can use it from my pms.