[cesarpereira]

Talk to your boss (manager, CTO, etc...) first! You have nothing to lose by doing this. Be completely honest with them about your feelings, but phrase things in positive ways. Don't say you "already stopped learning new things", but tell them you "have a lot more to offer and ready for more challenges".

Do you know nothing cool is coming down the pipeline for the foreseeable future? Show initiative and tell them all of the things that you genuinely love about the company and how you like it there. Don't put them on the defensive or focus on the negatives. During that conversation discuss the current positives and the future positives with you as an engaged employee with more responsibility.

You have absolutely nothing to lose if you are on the fence with your decision. If they react poorly you know what you need to do. If they react positively you may have a long-term happy future there.

[grumps]

I fully agree with this approach. I'd still give some it some time to see if things can happen. If they're good they should find something to challenge you. Maybe find a side project that's challenging?

I recently changed jobs from a company after a year. They were incredible well known and respected, but I wasn't going to get anywhere. I waited for a year because many business believe it takes nearly a year to get in the groove of a position, not sure if that's entirely true but it's commonly accepted.

[sfjobthrow]

I really like this approach.

I'm quite sure I know what work is on the horizon and that it won't be very challenging and I can't see a situation where that might change either. It's just the nature of their business.

Good point about keeping it positive, I will remember that.