You would be working as a freelancer right? Or will they use some agency to hire you? Freelance senior PHP dev would be 90-100/hr in the EU so 180k-200k. If it’

You would be working as a freelancer right? Or will they use some agency to hire you? Freelance senior PHP dev would be 90-100/hr in the EU so 180k-200k. If it’s via an agency, you will need to do more calculations with social security and mandatory taxes in France.