Ruby developer - ongoing support relationship for existing s

Your company must have excellent ruby on rails experience. We are seeking a long term partner to grow with our business. We will undertake a mix of small enhancements and large feature changes. A demonstration account is available for you to view at [login to view URL] – demo – demo20 As a provider you must have a number of staff that could work on the project at anyone time to cover staff movements and availability. You must be able to respond and resolve issues within 2 hours if required. Please provide a proposal on how you would charge fees on an ongoing business.