Callstack.io Sp. z o.o.

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Callstack provides top cross-platform consultancy & development in React.js and React Native. We co-create and shape the technology as core contributors and innovators. Take a look at our Open Source projects. The company was founded in 2016 by Mike Grabowski and Anna Lankauf. We grew very fast during the last few years, and now we are a team of over 100 highly skilled individuals that can help you with your React and React Native project. Callstack also organizes the only 100% React Native and community-driven conference in Europe - React Native EU. Our main goal is to drive and accelerate software development innovation. To achieve that, we follow our main rule: We don’t follow best practices. We set them!

What is unique about working at Callstack?

You will work with the best React Native experts on applications used by millions worldwide. Our clients are serious.
You can develop your own ideas in our R&D program. If you want to bring your visions to life - Callstack will support you.
You have a possibility to contribute in projects like React Native Paper, Linaria, RN Testing Library etc.
You can use our dedicated budget to work on Open Source projects.
There are plenty of possibilities to showcase your expertise: You can speak at our React Native EU conference, be featured in our blog, or The React Native Show podcast episode.
With our help you can also upgrade your soft skills, managing skills or become a Mentor in the future.

Join us and work with the TOP Silicon Valley and Fortune 500 companies in the USA.

Callstack provides top cross-platform consultancy & development in React.js and React Native. We co-create and shape the technology as core contributors and innovators. Take a look at our Open Source projects. The company was founded in 2016 by Mike Grabowski and Anna Lankauf. We grew very fast during the last few years, and now we are a team of over 100 highly skilled individuals that can help you with your React and React Native project. Callstack also organizes the only 100% React Native and community-driven conference in Europe - React Native EU. Our main goal is to drive and accelerate software development innovation. To achieve that, we follow our main rule: We don’t follow best practices. We set them!

What is unique about working at Callstack?

You will work with the best React Native experts on applications used by millions worldwide. Our clients are serious.
You can develop your own ideas in our R&D program. If you want to bring your visions to life - Callstack will support you.
You have a possibility to contribute in projects like React Native Paper, Linaria, RN Testing Library etc.
You can use our dedicated budget to work on Open Source projects.
There are plenty of possibilities to showcase your expertise: You can speak at our React Native EU conference, be featured in our blog, or The React Native Show podcast episode.
With our help you can also upgrade your soft skills, managing skills or become a Mentor in the future.

Join us and work with the TOP Silicon Valley and Fortune 500 companies in the USA.