Hi Quantified Publishing!
TheDollarGameStore offers fixed contract services for game development solutions, which perfectly aligns with what you're looking for! We (Myself and a few artists I sub-contract for now) currently specialize in creating bite-sized casual games that are unique and fun! With 15 years of game dev and design experience, communication will be a breeze and I can even assist in refining some of the design ideas.
Some work we've done in the past for clients: https://validate-network.itch.io/wtyis and https://validate-network.itch.io/bcg100-lille
These games also utilized FireBase to track and store answers to quizzes presented in the game.
If the proposal sounds tantilizing, please reach out to me at thedollargamestore@gmail.com or simply reply to this thread.
PORTFOLIO:
My Hyper-Casual Google Play Games:
https://play.google.com/store/apps/developer?id=TheDollarGameStore
One of my older mobile games containing IAP and In Game Ads (It was removed after the company re-branding so it's no longer playable unfortunately):
https://www.facebook.com/watch/?v=246187056267453
Website:
If you're interested in seeing more, my itch.io profile contains a handful of projects as well.
Hope to hear from you soon!
Kind Regards, Claris