Our mission

We support and inspire developers and companies to launch their products for everyone, at the same time, on every platform

We are a team of professionals with a can-do attitude. Collaborative minds who enjoy brainstorming. Tech enthusiasts, always looking forward to solving another problem. OS evangelists, creating new standards and improving the quality of code. A group of workmates who can rely on each other. Social media lovers staying up-to-date with the fastest growing community. Friends coming from different cultures, having various backgrounds, who share their passions and ideas with respect to diversity. Energetic team members who just need a cup of coffee to run the world.

Team

Meet the
experts

Mike Grabowski

Mike Grabowski

Co-Founder & CTO

Co-Founder & CTO of Callstack. Mike is a React Native core contributor and the author of libraries like RNPM and Haul. Mike makes sure our infrastructure performs well to its limits.

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Anna Lankauf

Anna Lankauf

Co-Founder & CEO

Co-Founder & CEO of Callstack. Anna is a young entrepreneur, having graduated from psychology, that has also a broad expertise as a UX Strategist. Anna makes sure that Callstack grows one step at a time.

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Mike Chudziak

Mike Chudziak

Lead Software Engineer

Software developer working all across the stack, always glad to help you manage the technical aspect of a project and lead your team to success. Experienced in the native mobile and web development. Always looking forward to exploring the new cross-platform technologies from React Native to Kotlin/Native. Big lover of GraphQL.

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Jakub Kłobus

Jakub Kłobus

Software developer

Software developer working at Callstack since the beginning. After mastering web, he moved to React Native where he focuses on making React Native Windows next big thing.

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Wojtek Szafraniec

Wojtek Szafraniec

Software developer

Software developer working with React and React Native. He likes to cooperate with the team. Big fan of MobX and clean code. Always ready to learn new things.

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Agnieszka Czmochowska

Agnieszka Czmochowska

Finance and Administration Manager

Can’t quit sports and, most of all, basketball, without which she couldn’t bare to live. In her spare time, she likes to travel and try different cuisines.

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Ferran Negre Pizarro

Ferran Negre Pizarro

Software developer

Software developer with broad experience in delivering first class React & React Native applications. Ferran develops Android apps as a hobby. He will also make sure you use Jest and test your code!

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Krzysztof Pawlak

Krzysztof Pawlak

Project Manager

Natural born project manager who loves to be involved deeply in projects. He ensures project quality and the regularity of progress and pays attention to both technical and business aspects.

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Piotr Drapich

Piotr Drapich

Software developer

JavaScript developer working full-time with React (Native). Having worked on the backend for quite some time, he mastered building apps with REST to its limits.

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Satyajit Sahoo

Satyajit Sahoo

Software developer

Satya is in Facebook’s 2016 TOP 5 external contributors list. You can find him everywhere. Satya is also a React & React Native ninja that will make your apps stand above the crowd.

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Łukasz Walczak

Łukasz Walczak

Software developer

JavaScript developer who likes finding the most all-purpose solutions. He is characterised by a precise and methodical approach to the problem. Open to new technologies and development opportunities.

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Paweł Trysła

Paweł Trysła

Software developer

Fullstack Developer, the tooling guy with extensive knowledge of Webpack and Babel. Huge fan of Electron, functional programming and RxJS.

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Krzysztof Borowy

Krzysztof Borowy

Software developer

Software developer with a passion for mobile development. Highly interested in native mobile and cross-platform world. You can find him tinkering with React (Native) and Android/Kotlin stuff.

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Adam Trzciński

Adam Trzciński

Software developer

JS dev focused on enhancing his skill set every day. Passionate with learning and getting to know new techs and skills.

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Michał Pierzchała

Michał Pierzchała

Software developer

JavaScript developer passionate about building mobile and web. Michal enjoys improving tooling and code quality, learning, and giving back to OSS community. Core Jest contributor.

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Krzysztof Sroka

Krzysztof Sroka

Software developer

Versatile software developer experienced in building highly scalable web apps. Focused on creating well-written and thoroughly tested code.

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Łukasz Czyszczonik

Łukasz Czyszczonik

Software developer

JavaScript developer, wants to know new stuff and learn new technologies every day. Fan of React (Native), CI, Node.Js, and mainly GraphQL. Fullstack everyday.

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Dawid Urbaniak

Dawid Urbaniak

Software developer

JavaScript developer passionate about web and mobile development. Mostly working with React, React Native and Node.js. Fan of Redux and functional programming.

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Meet us at

We speak at many conferences so you can come and give us a high five!

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