i hav 10 year experience witch web programming(backend and frontend too) also 2 year experience to use flutter.
WEB back-end:
PHP - 5.3+ or 7.+ - With or Without Laravel or other - almost any framework with MVC
pattern
DATABASE:
SQL – MySQL or MariaDB (including server administration skils), SQLite, PostgreSQL.
noSQL - mongoDB
WEB-MARKUP:
Javascript + coffeescript (jquery, angular-dart, etc.),
Vuejs+Vuex
taiwindcss - vanilla css
Server Administrator Skills:
Linux server(debian) administration
Python –
Web: flask, bottle
Ui(desktop, mobile): Tkinter, kivy, pyQt
scraping: beautifulsoup, scrapy, custom with Urllib etc.
data analysing: matplotlib, pandas
other: numpy, pillow, OpenCV, simpleCV, etc.
mobile:
Kotlin (only for android),
Dart + flutter – android, ios
micro-controllers:
Arduino-c++