airbus_driver319, thanks for the info.
I believe easyJet used to have a "CPL vs. ATPL" license rule for FOs and SFOs a few years ago (correct me if I'm wrong). I guess that's not the case anymore.
Every airline has its own "experience payscale". With my current employer everyone joins as an FO and, after 2 years, there's a decent pay rise when you become an SFO. Then, every year there's a slight increase in pay, up to a maximum of 15 years. It seems like a fair way of saying you become a more valuable asset every year you spend with the company.