I started using Metroretro a few months ago and it's really nice, except for the ability to export retro items I think it covers everything you listed. Also it's free and it comes with some useful templates. Source: about 3 years ago

To improve the developer experience, I needed to understand the real problems the engineers were facing, so I scheduled a brainstorming meeting. In this meeting, I explained my project and shared a Metro Retro board to write down all issues our application had at that time, what was the bad DX we had, and doubts related to this application (e.g. How do we handle data fetching?; how do we handle error handling?;... - Source: dev.to / about 3 years ago

I would check out https://startup.jobs/. Startups may be willing to take a chance on you. Source: about 1 year ago

I got my job on startup.jobs, and himalayas.app is also a good website. Source: about 1 year ago

Https://startup.jobs and https://www.effizojobs.com/all-remote-jobs. In no order of preference. Source: about 1 year ago

Adding to your list, I noticed that https://startup.jobs/ also lists customer service positions. Source: about 1 year ago

Or you could bypass all of the above and look here: https://startup.jobs/. Source: over 1 year ago