I use(d) some tools, technologies & concepts, like
HTML5
CSS3
SASS
cssnext
Vanilla JS
jQuery
Zepto
JSON
node.js
NPM
Gulp
Webpack
Emmet
Bootstrap
typo3
com2 CMS
semantic coding
UX Design
responsive design
fluid design
mobile design
responsive content
interaction design
css animations
WCAG
WAI-ARIA
prototyping
progressive enhancement
HTML Outlining
atomic design
PhpStorm
Adobe Flash
Adobe Photoshop
Adobe InDesign
Adobe Illustrator
Adobe DreamWeaver
SCRUM
Balsamiq
Mind Manager
icomoon
Slack
GIT
SVN
Streamtime
cssForms
modernizr
isotope
normalize.css
velocity.js
but I also love to do things 'by hand' for performance and stability reasons.
I feel home in environments with e.g.
PHP
MySQL
Zend Framework
Smarty
Wordpress
Angular
and I'm happy to adopt to new ones.