You may want to look into machine learning/data analysis/inferential statistics. I'm also a web developer. I do both front-end (Angular etc.) and back-end (Dja

You may want to look into machine learning/data analysis/inferential statistics. I'm also a web developer. I do both front-end (Angular etc.) and back-end (Django) work. I enjoy my work, so I'm not looking at a career change at the moment. However, I do not still want to be writing CRUD apps when I turn 30. To that end, I'm planning to learn about data analysis and machine learning over the next few years. I believe it's a useful skill that will always be in demand in business, even after the current "Big Data" hype dies down. I don't think this is something I can pick up in a few months' time. My current estimate is 2-3 years until I reach a reasonable level of competency.