Our project is related to the sharing economy. The project is divided in multiple phases. We will have to support native android in this phase of the project. The other operating systems ´s support will follow in other stages of the project. Of course we have clear project picture but we will work based on the Scrum approach which means agile, continuous deployment and so one and therefore we will have a set of feature for each deliverable increment. We do not wait till the end of the project to have a big deployment. Any time a specific defined functionality will be implement this will be release. A spring contains a feature which is predefined and which have to be implemented during the defined spring (which is maximum of 5 days). Every implemented functionality in a spring will be directly release. It means we will have a bid for a set of a functionality in the given spring based on the number of ours need to to the different tasks and we will release the money after every spring. We need professional with high understanding for quality, quality in term of coding, code structure, usability, performance and so on. The team should also be familiar with version control. more details can be given upon request. As previously said since we are using the lean approach we will first start with the first spring login process: account creation, login, password recovery and logout with the related UI which have to be of high quality too. More information will be given upon request. I am waiting for your bids.