In any job I've had (all remote), just message any person with some experience with the thing you're working on. They're always more than happy to bounce ideas or hop on a call and chat about it

> Hey, I'm working on feature A that needs X, Y, Z solutions. I see you worked on something similar, I'm trying to figure out the right way forward. Can I bounce some ideas off you?

Works with people without the experience

> Hey I'm working thru a problem and having trouble coming to a solution, any chance I could bounce some ideas off you?

Basically I've never had a "mentor" and I just ask people questions

> working at a remote startup since

This was my first job too. The upside was the freedom to explore on my own. The downside was lack of experienced coworkers. So I quit after a few years to get more of those.

AI is also decent at answering these kinds of questions, but less rewarding since it's not a human you can chat with

Usually, a mentor has to come from your professional network.

Maintaining your professional network requires work.

In your case, your past mentors are a place to start that work.

It is important to demonstrate a maturity and attitude that makes it make sense for a mentor to invest the time in the mentoring relationship.

Good luck.