Hello,
I can understand that you need some ruby script to be written.
We do have a good exposure in working with Ruby from v1.9.3 till v2.7. Apart from that, we do have a good experience in writing SQL queries, Background jobs (sidekiq, delayed jobs, etc), Redis, etc.
The proposed bid amount and timeframe can be updated depending upon the work.
I would be happy to discuss further in chat.
Thanks & Regards,
Naman