I build and harden production AI software that needs to handle real users, payments, private data, and production traffic.

Most of my work sits around:

• AI-built apps that need more than a demo
• SaaS platforms with auth, billing, roles, and data boundaries
• Stripe/payment flows where access must match reality
• background jobs, webhooks, and async workflows that cannot silently fail
• AI endpoints with cost controls, usage limits, and observability

I care about the boring parts that become expensive later: authorization, multi-tenancy, billing state, idempotency, rate limits, error handling, monitoring, and recovery.

Next.js · TypeScript · Node.js · Hono · PostgreSQL · Supabase · Stripe · Inngest · BetterAuth · Claude/OpenAI APIs · Upstash Redis · Vercel · Sentry

Background: checkout systems for one of Europe's largest e-commerce platforms: 1M+ users, thousands of daily transactions, and code paths where a small bug could stop money from moving. That shaped how I work now.

Los Angeles, CA · agakadela.com