We have gone through your requirements. We have done bit similar work with office 365 calendar api as well deal with google calendar api.
Vatsal Technologies has more then 10 yrs of experience in the field of Website/software/Mobile Development having long list of projects and satisfied customers. We have team of experienced developers and designers to work with .net, php, wordpress, Magento, ECommerce, Java, CMS, Iphone & Android.
We are happy to have any communication to move ahead with project.
Please visit our portfolio for more information about our work experience.