As someone who has done that, it is an uphill battle to get recognized for that work without the proper title. It’s mostly recruiters who want easy commissions who won’t advocate for you and quite a few HR people will screen you out even if you seem to have the skills just because you don’t have that title. I hope you have a better job search than I did after doing that for a company.
You’ll be okay, regardless. You have the skills and can prove it, if given the chance. It is just frustrating trying to get to that point sometimes. Just keep your head up and reiterate the specifics of your skills to recruiters and during phone screens. Once you get to those first actual interviews, it gets a lot easier since so many people have this shared experience. I had so many interviewers ask the same question I felt like I was reciting a monologue from a movie after a while. :D