Head of People & Culture
Radek Chrzempka

Primarily responsible for planning and implementing strategies to attract, engage, and develop employees. His main goal is to create and maintain a people-focused, high-performance Callstack culture where employees are satisfied and engaged. He is known for providing practical support quietly and conscientiously, usually behind the scenes. A fan of photography, cycling, American history, and development books. Father of two teenagers and a recent enthusiast of the Berlin Half Marathon.
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Build the AI-native React Native future
Work with engineers who contribute to the ecosystem and turn new technology into real products. At Callstack, AI is part of how we build, learn, and ship software.