You should consider several factors when estimating the cost to hire react.js developer. These include, but are not limited to, the developer’s experience level, the size of the project, the complexity of the features, and the business needs. ReactJS is used by more than 298000 domains and over a million websites. Facebook, Dropbox, PayPal, Tesla Motors, Instagram, Shopify, Walmart, Netflix, and Airbnb are firms that hire ReactJS.