Thorough understanding of React.js and its core principles .
Experience with popular React.js workflows (such as Flux or Redux) .
Familiarity with newer specifications of EcmaScript .
Experience with data structure libraries (e.g., Immutable.js) .
Knowledge of isomorphic React is a plus .
Familiarity with RESTful APIs .
Knowledge of modern authorization mechanisms, such as JSON Web Token .
Familiarity with modern front-end build pipelines and tools .
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
Ability to understand business requirements and translate them into technical requirements .
A knack for benchmarking and optimization .
Familiarity with code versioning tools such as Git, SVN, and Mercurial.