I have 7 years of experience in a state-owned enterprise and am an exact program engineer at the Zubotekhnicheskaya Institute.
There, I have experience with web backends (Laravel, Express JS, Ruby on Rails, etc.) and frontends (React JS, Angular JS, Vue JS, Ext JS).
Ruby on Rails was developed for 3 years and React for 5 years.
The business they did there is a secret and can't be said.
I also have experience developing games using Unity and Cocos.