Scale your React Native app without rewriting it
We help growing product teams evolve their React Native architecture to support larger codebases, faster delivery, and multiple teams—without compromising quality or maintainability.maintainability—without starting over.
Why React Native scalability breaks down in real-world apps
Most teams don’t plan for scale from the start. Without intentional architecture and team structure, React Native’s initial speed advantage turns into a long-term liability—slowing down delivery and threatening maintainability.
No boundaries for team ownership
React Native doesn’t enforce modular separation. Without a shared structure for isolating features, multiple teams working on the same codebase introduce conflicts and delays.
No boundaries for team ownership
React Native doesn’t enforce modular separation. Without a shared structure for isolating features, multiple teams working on the same codebase introduce conflicts and delays.
Early architecture doesn’t scale
Early decisions like shared navigation, global state, or tight native coupling limit flexibility. Without modularization, the codebase becomes harder to maintain and extend.
Early architecture doesn’t scale
Early decisions like shared navigation, global state, or tight native coupling limit flexibility. Without modularization, the codebase becomes harder to maintain and extend.
Tooling gaps slow everything down
Build systems, testing, and release automation often fall behind as the app grows. Without dedicated investment, release cycles become slower and quality becomes harder to guarantee.
Tooling gaps slow everything down
Build systems, testing, and release automation often fall behind as the app grows. Without dedicated investment, release cycles become slower and quality becomes harder to guarantee.
Abbott uses React Native to deliver real-time glucose data to patients
Abbott’s diabetes division uses React Native to power production apps used by patients worldwide—streaming real-time glucose data from medical devices to mobile apps.
Their engineering teams use a shared cross-platform setup with scoped team ownership to deliver reliably across iOS and Android—meeting strict testing, performance, and compliance standards.
Scalable architecture and delivery at every stage
A React Native foundation built to support fast, coordinated releases—enabling clear team ownership, long-term maintainability, and continuous growth without tech debt..
Isolated features
Modular architecture that lets teams develop, test, and release features independently—without impacting the rest of the app.
Architecture that lasts
Flexible navigation, state management, and code structure—designed to eliminate bottlenecks and support long-term scale.
Faster release cycles
Optimized CI/CD, testing, and build tooling—so you can ship confidently, frequently, and without friction.
Team-based ownership
A codebase structured around team boundaries—minimizing conflicts and reducing delivery friction.
Incremental improvements
Modernize in place—refactor without rewrites, so your team keeps shipping while the app scales.
Shared standards
Consistent patterns for code, naming, and structure—so teams move faster and onboard with ease.
Learn how team structure impacts your app’s scalability
As your React Native app grows, the biggest scaling challenges aren’t technical—they’re organizational. According to Conway’s Law, your communication structure shapes your product, and if your teams are siloed, your architecture will be too.
In this talk, Michał Pierzchała shows how team dynamics and collaboration directly influence code quality and system design. He explores how to align architecture with communication, how React fits into this model, and how to turn Conway’s Law into a tool—not a trap.
Build the foundation for faster delivery and long-term scale
Modernize and reduce tech debt
We refactor outdated patterns, simplify architecture, and introduce scalable conventions—freeing your team from bottlenecks and regressions.
Modularize your app structure
We break monolithic codebases into domain-driven modules—making it easier for teams to work independently and ship faster.
Align code with team structure
We help organize your codebase to reflect how your teams work—reducing friction, improving ownership, and enabling parallel delivery.
Shape team structure to make the most of React
We help define team boundaries to fully leverage React’s strengths—improving code sharing, ownership, and cross-platform efficiency.
Scale delivery infrastructure
We optimize CI/CD, testing, and release workflows to support frequent, multi-team deployments across platforms without added risk.
Why leading companies work with Callstack
Meta Official Partners
We are official Meta partner for React Native, co-organizers of React Conf and hosts of React Universe Conf.
Working at scale
We know how to make React Native work at enterprise scale, both technically and organizationally.
React Native Core Contributors
We don’t just use React Native to build cross-platform apps, we help shape it for millions of developers.
Team at scale
We’re a team of 200+ engineers ready to start fast and scale with your needs.
Enterprise-friendly
We hold ISO certifications and follow strict security standards to make onboarding smooth and compliant.
Wide range of services
As a partner for your full application lifecycle, we offer a full range of services around React and React Native.
FAQs
Scaling a React Native codebase isn’t just about performance—it’s about team workflows, delivery speed, and architecture that won’t fall apart under pressure. Here’s what companies often ask us.
Yes. We focus on incremental modernization—modularizing your architecture and improving structure without stopping product development.
We work in parallel with your team, isolating areas of concern and refactoring gradually—so velocity is preserved while quality improves.
We help split your app into independently owned and testable modules—based on features, domains, or teams—making it easier to scale and maintain.
Yes. We design scalable architecture and workflows that allow multiple teams to ship in parallel without stepping on each other’s work.
It depends on your current setup—but we typically help teams speed up releases by improving CI/CD, test automation, and ownership clarity.
We begin with a technical audit of your architecture, structure, and team workflows—then prioritize changes that offer the biggest return.
Yes. We advise on code ownership, boundaries, and team alignment—so architecture supports scale not just technically, but operationally too.
Need a partner to build or scale your mobile app?
We work with product and engineering teams to deliver cross-platform apps that meet performance, UX, and platform quality standards—at any stage of development.
