I was hired with the official title "software engineer," then I was noted in all unofficial org charts as a "SE/DE" (software engineer/data engineer), and recently my boss announced that I have had my title officially changed to "data engineer". My job functions have not changed the entire time I've been here. I write Python, SQL, KQL and Pyspark scripts and have to fuck around with Azure architecture sometimes. So there's not always clear delineation between these terms, anyway.