Did Paul remain a Jew even after his conversion?

I’m doing some research about early Christianity, specifically looking into the circumstances of the divergence between Judaism and Christianity as two very distinct religions as we know them today. It seems Paul had a very remarkable role in shifting the Christian faith into a more Gentile and independent religion rather than enforcing Mosaic laws. Since Paul is considered the Apostle to the Gentiles, did Paul continue to consider himself a Jew after conversion?