Sergey Kalinin

I build TradingCalc, a free deterministic calculator and MCP server for crypto futures traders and AI trading agents (liquidation price, PnL, position sizing, funding cost). Previously Head of Product at KUNA Exchange, Senior Product Owner on many blockchain/DeFi gigs at DataArt, now Integration Lead at ADI Foundation, working on stablecoins and tokenized assets. I write a weekly newsletter on CME BTC options and ETF flow.