Massive.com Finance Data Correlation Analysis

I need an engineer who already knows their way around the Massive.com API well enough to move beyond simple pulls and actually manipulate the data in-flight. My immediate objective is to ingest large streams of stock-market quotes, on-chain cryptocurrency metrics, and FRED macro-economic series, reshape them as needed, and then run clean Pearson correlation studies that I can query on demand. A working site is already created with NextJS/Supabase/Vercel, but I need help taking it to the next level and also hosting it in a budget friendly SQL provider. 2M+ rows of data.

More details will be provided if interested. Looking to work with solo engineers not teams or agencies. Thank you!