[ian0]

You are already a lead. And one who has performed well. They are acknowledging you as a senior dev. For a year! Whether deliberate or not, this obviously has to be fixed.

This shouldn't be something related to performance reviews. Set your BATNA[1] to give you psychological support, approach your director/previous manager and in the nicest way possible say that you love working here and want to continue to do so but you need them to fix the situation. Put the pressure on them. When it comes to your performance review you want them to be on the back foot.

Note its important to keep communications really nice, really positive, but be willing to walk away. There is a chance they will not accept, for whatever reason. If this is the case then you may be better off someplace else.

[1] Your best alternative to the negotiations failing. Typically this means having a job offer from another company ready (not as ammo, just personal psychological support). But also committing to yourself that you will leave if they don't accept is fine too.

[chrisbennet]

BATNA = Best Alternative To Negotiated Agreement

[togusa2017]

Couldn't have said better. But from my experience, assume the worst and be ready to walk away.