This looks good, nice work.

I need something like this at the moment, but I'm curious what the target company size is for a project like this. For example, we're a 2-3 person team and not quite big enough to have the capacity to run our own deployment of something as critical as Kala/job schedulers. Nor do I want to run another DB like Bolt/Redis when I'm already running another critical DB.

I'll probably go with a hosted solution ala http://www.iron.io/worker until we can run our own.