
We don't just ship products
WE SHAPE THE SPACE
Callstack is the Total Software Engineering Consultancy that transforms organizations and teams through transformative apps.

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RUN YOUR BUSINESS ON
React Universe
We use the React Universe tech stack to make app development




Smoother, safer, simpler
We go beyond the brief to find and fix issues that stop your app from performing.
A UNIVERSE OF POSSIBILITIES
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Services
We create game-changing apps that transform your business from the inside out.


Product Development and Growth
From app architecture and development to new features, we help develop digital products that delight customers
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Optimization of Products and Processes
Diagnose performance issues and develop solutions that establish new standards for your product and operations
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Tech Stack Upgrade
Futureproof your app for a rapidly changing business landscape - apply the latest technologies
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Team Upskilling
Unlock the full potential of your in-house team - we can help your developers tackle the most complex challenges
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Business Transformation
Choose the right tools and technology, and execute the digital transformation of your company
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Community
We build, maintain and contribute to the most popular Open Source libraries, events and resources in the React and React Native
eco-system.

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