Building reliable background jobs and engineering workflows has almost always been challenging in any company I worked for, and I’m glad there is a company now who tries to excel the DX aspect of this problem.
I was in a similar situation as you except I have a full-time job. I started https://cronhub.io a year ago and it's currently a profitable side-business.
You don't need to focus on the idea too much. I think it's important but seeing other companies solving the same problem should not discourage you to come up with your own solution.
Take a look at these products for inspiration (https://www.indiehackers.com/products) and some of them solve a similar problem but they still co-exist.
I've been facing the same problem so I've decided to make it my next side-project and build the simplest way to keep track of books online. Here is the link: http://www.booknshelf.com/
Currently I'm listening to "Personal MBA" audiobook and loving it so far. I'm not the biggest fan of business books but decided to give this one a try to learn a bit more about marketing and sales.