Aga Kadela

About Aga Kadela

I work with founders and small teams on AI-powered applications - usually right before launch or after something breaks in production. Most of my work sits between product engineering and production readiness - taking an app from “the demo works” to something that holds up when real users, real payments, and real AI costs show up. • Next.js / React / TypeScript SaaS apps • Supabase Auth, RLS, Storage, and Edge Functions • Stripe Checkout, subscriptions, webhooks, and premium access logic • OpenAI / Anthropic API integrations • AI endpoint cost controls, rate limits, and usage logging • Production hardening before launch • Code audits for AI-built apps made with Lovable, Bolt, Cursor, and v0 • Backend workflows, automations, dashboards, and AI agents My background is in high-stakes production: 1.5 years building checkout systems for one of Europe’s largest e-commerce platforms. Over a million users and thousands of transactions daily.