I'm data engineer working exclusively on the cloud services and mostly processing data with Apache Spark! I like to learn and share and if you want to see that, check my blog called waitingforcode and online course becomedataengineer (the link is in the blog).
On Udemy, I'm sharing practice tests based on my learning materials used to prepare (and pass!) AWS Big Data and GCP Data Engineer certifications. I will be very happy to see that they helped you as well.
For any question, you can reach me on my blog or one of the social media.