Satellite Roof Measurement Assistant

I need ongoing help measuring residential and commercial roofs from high-resolution satellite imagery. You will log in to the cloud-based app I provide, trace each roof following the on-screen guide, and save the measurement so it feeds directly into my system... (Budget: $30 - $250 USD, Jobs: Cloud Computing, Data Annotation, Data Entry, Data Management, Geospatial, Remote Sensing, Technical Support, User Interface / IA)