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.

1. You will work with the best RN Experts on apps used by millions. Our clients are serious. 2. You can develop your ideas in our R&D program. If you want to bring your visions to life in Open Source - Callstack will support you. Also we provide self- development budget. 3. With our help you can upgrade your soft and managing skills to become a Mentor in the future. 4. You have plenty of possibilities to show your expertise: become a speaker on a conference, be featured in our blog, or podcast.

During our journey we became the main contributors in Open Source, launching libraries like React Native Paper, Linaria, RN Testing Library etc. We are official Meta partners. In 2022 we started cooperating with Vercel in official partnership.

We hold events such as conferences, meetups or hackathons. We are proud organizers of the biggest react native conference in the world (and the first conference in Europe) which focuses exclusively on React Native. It’s a unique place for sharing expertise and learning from the top industry leaders. Since 2017 we bring the React Native community together to discuss technical topics and network with fellow developers.