What do you look for when you're hiring a PM or Senior PM?
Oh, I could write about this for a loooong time :). I'll condense down to a few key traits
Critical thinking - do you have the ability to understand and articulate the problem you are solving for and then finding a solution that works
Collaboration and communication - PMs work through influence. Being able to work with and communicate with peers and stakeholders is critical to success. I look for the ability to structure your thoughts and have strong verbal and written communication as part of this.
Execution chops - PMs absolutely need to be able to write a spec, work with engineering to deliver a feature, measure and track success, and iterate. This is non negotiable. You maybe the best at everything else, but if you can't be strong at execution, its going to be hard to deliver value
Define product direction - Understand customer needs, the market, your specific value proposition and define the roadmap for your area - for a more junior PM it may only be 1-2 quarters, for a senior PM 2-4 quarters and longer for principal and above. You may change it but can you help the team set a path and show them a way to get there
Make people around you better - PMs always lead a team, as an early career IC, you are still setting the direction i.e. leading your engineering team. Do you take the opportunity to help people around you get better i.e. do you help raise the bar across the folks you work with- could be as simple as sharing the business goals towards which you are headed, helping someone get better at written communication etc.