The Job board I am running is called RocketCrew and is focused on the Space industry.
To avoid spamming the RocketCrew Twitter account with new job offers, I built a tool to spread them across time.
It's called LoopBat https://loopbat.com/
You just have to add your future Tweets in an Airtable base and select a time interval between 2 posts.
In my case, when a new job offer is added to RocketCrew, a little script creates the Tweet and adds it to Airtable, then LoopBat takes care of the rest.
Let me know if you have any questions!