i asked around.
It is around 5.5k to 7k for a fresh Mech PE with at least 6 years of exp.

If you have additional skillset and some reputation , it may be 7K plus.

If you are a special bred of PE/AE with valuable experience in non building services , may reach 10K.

If you are a loser fresh PE , it will be below 5.5k.

Hope i answered some doubts.