I’ve never heard of “NativeScript,” so I can’t understand why a company would risk something as high-stakes as their android app on that. I’m sure it has a lot of benefits but the reality is that it’s still immature. Save the experimental technology for the low-stakes stuff. That’s just disciplined engineering practice.
My guess is it's a Microsoft shop where the most used technology was ASP.NET Webforms and then later Angular. They saw that Telerik (a favorite of enterprisey MS shops) had a cross-platform app framework based on Angular, and they decided to stick with what they knew. I've worked at a couple of these places.
