EF LEARNING LABS is the tech hub of EF Education First. We’re an international team of over two hundred engineers spread over three primary cities - London, Boston, and Shanghai.

Our front-end battalion is a close-knit team of 20. When we’re not working to deliver happiness to over nine million language learners, we’re playing foosball in the kitchen, owning the product managers at table-tennis, spiking the designers’ sodas with baijiu at Happy Hour Fridays in our stadium, and contributing to top-notch open source projects born out of our daily crunch.

SKILLS:
-5 + years hand-on coding experience of JavaScript, HTML, CSS and related browser technologies.
-Problem-solving skills backed by a solid knowledge of data structure and algorithms.
-Proven track record of delivering high-quality web products.
-Strong teamwork and communication skill using English as a working language.
-Fluent in Web standards and building solutions using semantic markup
-Passion for creating great user experiences in collaboration with UI designers
-Bachelor degree of Computer Science or other related major

It'd be great if you also have the following:
-Experience with ReactJS and Redux, or any other modern JS frameworks.
-Experience with ES2015+.
-Experience building Single Page Apps.
-Familiarity with Git version control system
-Browser compatibility awareness
-Proven open-source contribution on Github
-Experience working on *nix
-Cutting edge browser technology experience on HTML5 and CSS3
-Effective performance profiling and optimization skill
-Experience with test-driven development, and a strong sense of neat code
-Experience working in agile methodologies like Scrum

See details: http://careers.ef.com.cn/job/oWH44fwv/?__jvst=JobBoard&__jvsd=104&nl=0