I'd call this Lead Data Engineer, but it matters less what you call it and more what you put in the job description. For the requirements you've given, I'd suggest looking for someone who's set up tracking and the modern data stack from scratch, regardless of whether their title at the time was software/data/analytics engineer. Searching for "modern data stack" will get you a (growing) set of relevant tools.
You might also want to read The Informed Company by Fowler & David, which does a good job starting with a very simple setup and walking through how and when and what to add on - the folks you're looking for are in high demand, and if you don't find someone quickly, the book might give you enough to help your junior devs make reasonable choices for where you are now.