Technologies

We use modern technology stack that lasts for years

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React Native

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React

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GraphQL

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Node.js

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Objective-C

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Swift

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Java / Kotlin

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Electron

How we work

Your direction
Our code

Callstack’s goal is to help you and your team deliver a great product. That’s why working with us feels significantly different to what you might have experienced with external teams. We feel like your developers, just working remotely today.

See our work

Future-proof

We make sure that your app is not only cutting-edge, but rock solid in the long term.

Always in Touch

We're happy to use any software you prefer, be it Slack, Asana, Trello, etc.

Pay as You Go

We are your own full-time employees, but with a short-term commitment.

Let's work together

Need help with React or React Native? Let us know!