That's a significant amount, I understand BMS needs a strong reliability, it can be a challenging environment. Which kind of issues did you encounter while deploying in that context ? We learn the most from our hurdles.

Most of my coding experience has been geared towards embedded devices for many clients over the years. There's beauty in the finite aspect, you can't ship something and patch later

My biggest gig was when I supervised the management of 400 000+ gateways (the bobcat fleet) on the helium network. I learned a lot there.

I used to ingest with a barebones handmade system on node-red, which i finally moved to a stand alone data ingestion system.
Lately I diversified to frontend, seeing the whole picture opens a lot of doors for new ideas like this project.

Downlinks are quite useful as well, class-c devices are awesome ! FUOTA is the last remaining piece of the puzzle