Hello,
I'm an experienced web & maps developer and I have worked with many platforms and mapping projects.
For this project I would built a Python web application where you would upload the files.
Relevant Skills and Experience
Python, GIS, HTML, Google Maps, Geocoding, Javascript, CSV, XLS
Proposed Milestones
$150 AUD - Discuss the project in detail
$400 AUD - Create working version
$200 AUD - Final milestone & tests
How many files are there, how many addresses in total? There are usually geocoding limits imposed.