In one of most recent projects, SEMTEXX team was involved in consolidation of 2 core banking platforms onto single platform after merger of 2 banks. It might sound simple - extract data from one and import data into another. Still you really think it is easy?
Last year during "Covid 1" I had 5-6 months activity with Kotlin Coroutines when I created an Android app which takes and pre-processes pictures for images classification Neural Networks training.