Ada Lovelace was arguably the first computer programmer, but that's certainly debatable from a "what counts as a computer".

https://en.wikipedia.org/wiki/Ada_Lovelace

Less debatable is the role women played in shaping the entire culture of computer programming in the earliest eras of the field. Between human computers & cryptography, right through to the first modern programmers.

Do yourself a favor and look up the term "kilogirl".

Women invented computer programming.