Notes on engineering leadership, platform architecture, and integrations at scale — from a fractional CTO and advisor.https://amitsolanki.com/https://amitsolanki.com/writing/whatsapp-catalog-cart-field-guide/https://amitsolanki.com/writing/whatsapp-catalog-cart-field-guide/What it actually takes to get a Rails app talking to WhatsApp's Cloud API with real Catalog and Cart support — eight undocumented walls, in the order I hit them, and the checklist that would have saved me a day.Wed, 12 Aug 2026 00:00:00 GMThttps://amitsolanki.com/writing/mcp-server-spree-commerce/https://amitsolanki.com/writing/mcp-server-spree-commerce/A hands-on log of building an MCP server against a real Spree Commerce store seeded with 100,000 real historical orders — a silent data-loss bug from a fast insert path, a join fan-out that made my own analytics lie by 42x, and standing up full spec-compliant OAuth 2.1 instead of skipping auth for a quick test.Mon, 10 Aug 2026 00:00:00 GMThttps://amitsolanki.com/writing/voice-ai-restaurant-receptionist/https://amitsolanki.com/writing/voice-ai-restaurant-receptionist/A hands-on log of building a voice AI phone agent for restaurant ordering with no prior voice-AI background — the architecture bet that paid off, a toolchain bug with zero AI glamour, and the moment a confidently wrong AI got caught by a boring safeguard.Fri, 07 Aug 2026 00:00:00 GMThttps://amitsolanki.com/writing/api-integration-checklist/https://amitsolanki.com/writing/api-integration-checklist/10 lessons on idempotency, webhooks, auth, and observability from 200+ production API integrations — and the checklist that came out of learning them the hard way.Mon, 03 Aug 2026 00:00:00 GMThttps://amitsolanki.com/writing/open-for-fractional-work/https://amitsolanki.com/writing/open-for-fractional-work/After two decades building platforms and teams — WeWork's hyper-growth years, then eight years scaling a restaurant-integrations organization to 20,000+ live locations — I'm opening a small fractional CTO and advisory practice.Sat, 18 Jul 2026 00:00:00 GMT