Hi,
I have read your requirements that you require an expert in Power BI, and the purpose is to create different charts including bar chart etc. The data that your would be providing would be in json. I am Ibrahim, and I am a data scientist, I can help you with Power BI, as my experience is more than 100 projects in the software. I can directly connect json as the data source, or convert json, it is up to you, please share the nature of data for this in chat
Regards,
Ibrahim Anjum