Consider taking/playing roles in management regardless of your current position as a developer.
It depends on what kind of manager you want to become. Technical or functional roles.
Based on that you need to groom you skill set.
Certifications aside , being practical is what will land you a Job in management.
Though , I don't think I am eligible to answer this as I am not in management role , however this is what I have heard from upper management whenever I tend to ask them about such stuff.