I architect scalable platforms and optimize the systems underneath them.

ChatBack

A multi-tenant loyalty, marketing and fintech platform for retail chains, operated entirely through WhatsApp — no app to install. Every chain lives in the same database under its own tenant: its own branches, its own programme, its own data, isolated from the rest.

Identity is passwordless: one-time codes delivered in the same WhatsApp thread the customer is already in. Nothing to install, no password to reset, and the verification lives in the channel itself — which is what makes it safe to attach a balance to a phone number.

Sized against a real pipeline rather than a round number — the chains we pitched ran 3,600, 900 and 700 branches. The data model had to hold five thousand-plus locations across tenants without the largest one degrading everyone else's queries.

At the core, a rigorous, normalized SQL ledger optimized for financial auditability: virtual balances, real-time waitlists and micro-credit profiling derived from transactional data. Double-entry rather than a mutable balance column, so every movement is traceable and safe under concurrency — and deliberately architected as a financial channel that never custodies funds.

Visit usechatback.com →

Residencial Plus

I evaluated pixel streaming architectures first, then rejected them and engineered a custom 3D web renderer in raw Three.js — bypassing the standard wrappers to overcome severe performance bottlenecks and hold frame rate on photorealistic ultra-dense point clouds.

The bigger win was a product decision rather than a rendering one. The first build let buyers walk a development as a 3D avatar, GTA-style — impressive, and not what the market actually wanted. I replaced it with orbital rotation for exteriors and 360° spheres with points of interest for interiors: what buyers really use, and what an agency can produce without me. That change cut production of a new development from four weeks to a single day.

Behind it, the full backend infrastructure and a custom WhatsApp CRM with automated lead-scoring workflows. Live in production with real listings.

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Kilometra

A Next.js and PostgreSQL platform designed for enterprise fleets of more than 1,000 vehicles — delivery routes, driver events and vehicle maintenance — with Stripe driving automated B2B onboarding.

Drivers log maintenance, fuel and emergency events straight from WhatsApp, and event-driven LLM pipelines run AI voice and text agents on top of the CRM, with stateful conversation logic behind custom webhooks.

Visit kilometramx.com →