Qualifications & Skills:
True mastery of HTML5/ CSS3 on desktop, tablet and phone devices
Proficient with CSS using preprocessors and tools like LESS, SASS or Stylus, Compass
Solid development experience using JavaScript, read "The Good Parts", lover or hater of ES6
Experience with multiple of: Bower, Grunt, Gulp, Webpack, React.js, Flux, Node.js, Karma, Mocha, Selenium, PhantomJS, Browserstack, Saucelabs, Mocha, Chai, jsdom, Supertest, Sinon, Istanbul, ...
Efficient user of tools like Axure, Balsamiq, Photoshop, Muse, Fireworks
Very good conversational skills in English are mandatory, German or Polish is a plus
A big plus: Experienced with test driven web development and continuous delivery & some experience with React.js + Flux
Personal Traits
Really good eye for sleek design, cleanliness and consistency
Understands users and works steadily to provide them with exemplary user experience
Able to comprehend and deal with large and complex web projects
Can focus on deliverables and small increments but also not afraid of huge changes
Non-religious about specific frameworks, languages or tools