<About Us />

Callstack is all about the people

Meet our team

Mike Grabowski

Mike Grabowski

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Mike Grabowski
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.
Anna Lankauf

Anna Lankauf

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

Mike Chudziak

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Mike Chudziak
JavaScript developer working all across the stack. Highly experienced in Web and Mobile development, but also capable of designing APIs and CLI tools. In love with React Native and GraphQL.
Jakub Klobus

Jakub Klobus

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Jakub Klobus
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.
Wojtek Szafraniec

Wojtek Szafraniec

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Wojtek Szafraniec
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.
Agnieszka Czmochowska

Agnieszka Czmochowska

Agnieszka Czmochowska
Finance and Administration Manager. Can’t quit sports and, most of all, the basketball, which she couldn’t live without. In her spare time, she likes to travel and try different cuisines.
Ferran Negre Pizarro

Ferran Negre Pizarro

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Ferran Negre Pizarro
Software developer with a 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!
Krzysiek Pawlak

Krzysiek Pawlak

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Krzysiek Pawlak
Natural born project manager who loves to be involved deeply into the projects. He ensures projects quality and regularity of the progress. Pays attention to both technical and business aspects. After work - gym freak.
Piotr Drapich

Piotr Drapich

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

Satyajit Sahoo

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

Łukasz Walczak

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Łukasz Walczak
Javascript developer who likes finding the most all-purpose solutions. He is characterised by precise and methodical approach to the problem. Open to new technologies and development opportunities.
Paweł Trysła

Paweł Trysła

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Paweł Trysła
Fullstack Developer, the tooling guy with extensive knowledge of Webpack and Babel. Focused on cross-platform applications development and JavaScript technologies. Huge fan of Electron, functional programming and RxJS.
Ada Rutowicz

Ada Rutowicz

Ada Rutowicz
Marketing Manager, a long-time professional and passionate. Privately, a gamer and a horror movies junkie.
Agata Leśniak

Agata Leśniak

Agata Leśniak
IT Headhunter, who running end-to-end recruitment process and takes care about all HR cases. Strongly interested in modern HR tools and practices. Her Zen is a beach - if it’s possible, she can surf all day and night.
Krzysztof Borowy

Krzysztof Borowy

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Krzysztof Borowy
Javascript developer, mastering skills at using React/React native and NodeJS development. Gaining experience as fullstack dev everyday.
Raúl Gómez Acuña

Raúl Gómez Acuña

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Raúl Gómez Acuña
JavaScript orchestrator advocating declarative over imperative. Currently empowering the web and mobile with React and React Native applications. He also contributes actively to open source in his free time
Adam Trzciński

Adam Trzciński

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Adam Trzciński
JS dev focused on enhancing his skillset with every day. Passionate with learning and getting to know new techs and skills.
Michał Pierzchała

Michał Pierzchała

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Michał Pierzchała
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.
Jakub Beneš

Jakub Beneš

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Jakub Beneš
Fullstack developer deeply in love with the JavaScript of all kind. He likes the functional code which is properly tested. Huge fan of Ramda, Rxjs.
Konrad Szincel

Konrad Szincel

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Konrad Szincel
Event & Marketing Specialist and a Photoshop master, who takes care of most of event activities. Can’t live without volleyball which he grew up with. His goal is to visit all seven continents by the age of 25.

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