This board is for services paid in bitcoin only. As you are willing to pay in usdt, you have to move this topic to the altcoin marketplace here:
https://bitcointalk.org/index.php?board=161.0Also, it's better to escrow to escrow the funds pool dedicated for this offer. Use one of the reputable escrows available here in the forum. Here a list of them:
https://bitcointalk.org/index.php?topic=2439910.0Edit:
I don't have a portofolio as a professional translator, but i can help translating to/from arabic if you can give me a try. I can also help in proof-reading for arabic and french translations if needed.
I wish you the best of luck.