It needs a Documentation portal, knowledge base, video tutorials, onboarding material, customer communication, use cases, and promoted through social media and blog posts.
Since I am quite busy to keep the application running and providing new features I need a person to help me with all these tasks.
I need a 'Product owner' but with marketing and writing skills, a person that can understand the product and can provide helping material to the end users.
Is there any well-defined role that could help me with these tasks? What kind of background such a person has? What should I look for this hire?
Shall I hire a Marketing person or an IT person with writing skills?
I would look for that over an IT person who can write because I would want someone who is looking at this from the customer/user perspective. The key skill you want is “explainer”.
I don’t know how big your company is. If you’re big, you can hire this person. If small, you can find someone to do this on a contract-project basis. That’s how I would start, in order to find someone who is a good fit. (Something I have done in the past is hire two contractors for the same project, as a bake-off. It cost double, but helped me find the right partner.)