Options for the vector of development of the IT specialist?

Question

PHP

Good time of the day! I would like to ask the community about possible vectors for developing myself as a professional.
Worked with java se 6. Wrote web applets and stand-alone applications. It didn't get to the frameworks. Good understanding of the java virtual machine.
Recently switched to python/django. Now I am developing in parallel as a php developer.
In addition to this, I have a good mat. background. As a graduate student, he developed algorithms for continuous, numerical optimization of a new type.
In what direction to develop? What do you think will matter in the future? What do you advise, colleagues?

Answer 1

Here such questions are usually asked by schoolchildren
From a graduate student who "developed algorithms for continuous, numerical optimization of a new type" did not expect this

Answer 2

big data

Answer 3

Career map
dou.ua/lenta/columns/karta-kariery

Answer 4

what drives PHP? I admit that there is no work for others in the city, but still
Python is a good choice, it makes sense to develop Full Stack
, but with all the love for Python, being a Java monster is even better, so your departure from

Answer 5

Java + mathematics, banks and other fin immediately come to mind. organizations