Anna Lankauf

Overview

Anna Lankauf is a Polish angel investor and the former CEO of Callstack, a company she co-founded in 2016. After leading Callstack to become a global leader in React Native and cross-platform app development, she exited the company in 2025 when Viking Global Investors acquired a majority stake. Post-exit, Lankauf has actively invested in over ten startups, focusing on software projects that leverage artificial intelligence, medtech, and climate tech. She typically invests between $25,000 and $75,000 in early-stage companies, emphasizing ventures with both impact and investment potential. Lankauf's investment philosophy is guided by ethical considerations, avoiding sectors such as alcohol, tobacco, gambling, and industries that conflict with sustainable economic and technological progress. She is committed to supporting businesses that add value to the world and operate transparently. Her approach to investing is hands-on, often engaging deeply with the teams she supports to foster growth and innovation. Lankauf's experience in scaling technology companies informs her strategic decisions, aiming to build sustainable and impactful businesses. She remains passionate about building businesses from the ground up, finding the initial chaotic phase of development particularly energizing. Lankauf continues to seek new opportunities to invest in and mentor emerging companies, contributing to the growth of the technology sector in Poland and beyond.

Investment Focus

• Early-stage technology companies
• Focus on AI, medtech, and climate tech
• Ethical business practices
• Transparent operations

Portfolio Companies