Meet Piotr, a solo dev in Poland who built Visualizee, an AI rendering tool for architects and interior designers. He runs the whole thing on nights and weekends while working a full-time job. Here’s the entire stack behind a $10K/month side project: Cursor + Claude Code for building Fal AI for GPU / image generation Supabase for database, auth, and storage Next.js on Vercel for hosting Stripe for payments (subscriptions from day one) Mailerlite for email automation Ahrefs + MonitorMySEO for SEO PostHog, Google Analytics, and Sentry for tracking