Develop app in appery.io with salesforce integration

Hello, I am an experienced Salelsforce developer and currently work as an technical architect for a salesforce enterprise integration app development. I had involved number of Salesforce integration with external systems and is very aware of Salesforce services. Though I am not in the same time zone with you but there will be no issue in delivery I can understand the requirement very clear. I would like to work as different milestones for different stages. Hope you will feel comfortable and I will have the opportunity to work with you. If you feel then please let me know the details of the requirement so that it will be easier for me to deliver the final product. Thanks a lot for your time.