It's a very simple position of senior PHP developer with also a strong experience as a DevOps. I can tell that I'm lucky to love both my job and helping my team

It's a very simple position of senior PHP developer with also a strong experience as a DevOps. I can tell that I'm lucky to love both my job and helping my team grow, so I'm entitled to a little extra ? How would you find the market rate in the US (sorry it's maybe a dull question, but, even for my own country, I find it difficult to find reliable resources, especially since my salary is totally out the reports I read, but there is still a strong, hidden market.