Writing
Notes on building operational products.
Articles and notes on building operational products: CRMs, booking systems, internal tools, and the Next.js patterns that keep them reliable in production.
Hexagonal DDD from Day One: Building Holocomm to Be Built by Agents
Holocomm is a multi-tenant WhatsApp booking platform built as a hexagonal-DDD monorepo from day one — a structure chosen so a team of agents could produce and maintain it, keep full context in one place, and depend on nothing I don't control.
TDD by Construction: How the Vimbus Loop Validates Its Own Code at Scale
A validation layer wrapped around an autonomous code-generation loop: static task validation before any agent runs, split browser verification and re-grounded hexagonal rules while it runs, and a codebase audit that marks nothing done without a traced, tested path.
Evaluation-Driven Development: Shipping an AI Booking Agent You Can Trust
I was fixing Holocomm's booking agent one conversation at a time, with no metric to tell me whether a change helped or quietly regressed. The fix: evaluate the whole agentic flow with openevals — golden fixtures, multi-turn simulated users, an adversarial safety floor — and promote a change only when the numbers say it's better.