GIS - Digitize/extract building footprints

Here’s a small area we need you to extract the building footprints, you’re free to use any GIS software of your choice (Esri ArcGIS, QGIS,..etc), you need to use a web map service imagery with high resolution of covers the area of interest (preferably Google Imagery). Area of Interest (AOI): (5 x 5) Km2 , file will be submitted later upon starting of the project. Estimated Number of Buildings: ~ 4000 Buildings Deliverables: Output File format: 2D Esri Shape File (.shp), recommended, if possible, a File GDB Feature Class. Output Coordinates System: Projected (WGS_1984_Web_Mercator_Auxiliary_Sphere). Milestones: Milestone 1: Submit first 100 Polygons for QC, receive 10% of the payment. Milestone 2: Submit 1000 polygons for QC, receive 10% of the payment. Milestone 2: Submit remaining 2900 polygons for QC, receive rest of the payment. Reward: You’ll receive Bonus 10% upon the completion for excellent quality, 5 Stars rating, and appreciation, recommendation acknowledgement on you profile. Please confirm the software you want to use, and satellite imagery service, and the latest estimate you could submit the deliverable for proposal. **Submissions without a submitted proposal will be ignored.