For every new project we produce a detailed specification in english and every screen is complete designed on photoshop (we want a pixel-accurate implementation). Developer has to understand the businesscase and enduser requirements.
Based on this spec we want a detailed estimation from developer divided up to single tasks on JIRA (max 8h every task). Then we make a general plan with a guaranteed end and livegoing date.
During the project we have skype confs minimum 2 times a week, we are project leader and owner. Delivery on running projects is to begin weekly, to the end every day. Code must be deployed to GitHub and executable to our platform for installing on devices. Developer must be run unit tests on different real devices, we make the complete functional testing. Whole work must be managed on JIRA (with sprints). All bugs and CR are handled also on JIRA. On the end, developer have to deploy the app to our iTunes-store.
We are looking also for a developer who can maintane our existing projects when it is required, for bugfixing or cange requests.
We want to pay for a project a fix price based on the estimation.