As a data warehouse engineer, the one area I see the most over engineering is in analytics platforms. Data layers on top of data layers, complex ETL processes,

As a data warehouse engineer, the one area I see the most over engineering is in analytics platforms. Data layers on top of data layers, complex ETL processes, complex front end code written in the hippest new JS library, etc. Really what you need are a few talented analysts, and tools like R and Shiny to quickly whip up analysis and dashboards.