I have an economics master's degree from a german university and started working nearly three years ago. My first and current position is within the company's sales coordination department where I do most of the numbers stuff: calculating KPIs, talking to controlling etc. Additionally in order to make my team's life easier I wrote some VBA macros in excel which really helped us save time.

Recently I did some IT-like projects that caught my superior's attention using php/js/python. As a result I'll be working together with our data science team to scale up my project.

In my sparetime I'm doing some android app work and focus on two apps:
one is just used within my family but the other is already released as an alpha version in the app store and there are also some outside testers which are more or less happy with the app.
Dont get me wrong, those apps are far from perfect but they do what they were built for w/o any major bugs yet.

I guess that skillwise I could compare myself with **some** juniors after their bachelor's.

Since I'm not really happy with what I'm doing right now, I want to swith to IT (app development/software development/data science resp. analysis). This is something I can really see myself doing until retirment.

In order to have something to show to a potential employer I'm thinking about doing an IT bachelor (and maybe a master, too). 

So here are my questions:

* How well do employers (HR/IT managers) perceive IT degrees, that are done as part-time studies?
* Are there schools that have a good reputation for what I'm planning to do?
* If I start this year, I'll be slightly over 30 when finishing my bachelor's. Is this too old?

All the questions apply to the german job market.