Scaling Mobile Development with React Native

Greenwald clarifies that scaling means growing the development process, not handling more users or data. Wix wanted one mobile app for its roughly 90 million registered users, while reusing its web expertise and shipping features quickly.

Greenwald frames the approach as a balance between independent teams and central oversight. Wix organizes cross-functional product groups as “companies” and professional communities as “guilds,” which share practices and maintain quality across specialties.

Wix developers contribute 20% of their time to guild work, through quarterly guild weeks and regular collaboration. That time supports shared tools, open-source projects such as Navigation and Detox, and infrastructure; a core team and short-term staff loans provide additional expertise.

React Native helps small groups build for both iOS and Android, while publishing modules as open source from the start encourages separation from company-specific code. Each product team owns one or more mini-app modules, which the core app imports and hosts.

A module registry lets teams share components, publish events, and invoke methods without depending on one another’s internal state. Modules can choose different state tools, while the core app handles sessions and a shared UI library keeps the experience consistent.