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Active 1d ago
Bio: ex-Executive | Founder in Progress | 100M PLN | ex-CSO & Board @Callstack | Harvard | Mentor
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@mariusz-kozie-3093
I’m a software engineer who became a team lead, EM, CTO and CEO at the end :) I'm a founder of 'Ruby Europe' and 'Ruby Community Conference'
Active 18h ago
Joined Nov 18, 2025
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