Hi,
I'm a French native speaker, and lived in France for my whole childhood.
After working as a proofreader (English > French) for 3.5 years, I am now taking a break for a while.
I'm available to work on your project immediately and extensively, for a quick turnaround.
The way I would usually work would be by starting with a quick read through each article, to get a sense of the tone and context, which I usually find to be as important as correct grammar and spelling.
Then I would perform the actual proofreading, making sure your text matches both the appropriate tone and context, and is of course in proper French.
If you have any questions, I'd be happy to answer them.
Have a good day,
Arthur