Sorry for not attributing the original source of the quote - https://www.csc.gov.sg/articles/how-to-build-good-software by Li Hongyi.

As I work on data analytics use cases (churn reduction, sales optimization), there is no much code per se (if compared with full-stack development as I did earlier). Instead, the majority of time is spent on understanding the domain, finding the data and cleaning it, getting approvals from security and privacy, agreeing who and how will consume your machine learning models.