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Sergey Sereda

Full-stack Dev (Python/TS) | Building qalc.ai | Data & DeFi Enthusiast. Crafting smart tools with React, Angular & Databricks. Passionate about automation and Web3. 🚀

Krakow, Poland Joined on Feb 10, 2026 https://qalc.ai

Feb 10

Show Dev: I built a fast offline calculator hub with Next.js & Cloudflare

#showdev #webdev #nextjs #productivity

1 min read

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