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Isaque Carvalho
Rio Verde · 2026 · Authorial product — brand, design system, and platform

Nex

An ERP for the rural producer that lives inside WhatsApp. A product I co-founded and build — I conceived, designed, and built it, from brand to architecture.

Nex landing page homepage: the wordmark, the headline "From land to decision", and the brass N symbol.
01

The brand

Nex is born from “nexus”: the meeting point between technology and the field. I created the name, the concept, and the identity — including the wordmark, an “N” with a golden diagonal that forms the “not equal” symbol: the promise that agriculture can be done differently.

02

The design system

“Rural iOS” — a dark-mode system designed for the producer in the field. Five named colors (Night Earth, Cerrado, Sprouting, Harvest Gold, Mist), DM Sans + Syne typography, generous touch targets, and high contrast for strong sun and working hands.

03

The landing

nexiagro.com.br — the brand's front door, built to capture beta producers. Narrative, identity, and lead capture integrated with Supabase. Published and live.

04

The product

The core experience lives inside WhatsApp: the producer talks and the system manages inventory, schedule, and farm decisions. A PWA accompanies it as a dashboard. The technology adapts to the farm — not the other way around.

05

The architecture

Next.js 15, Supabase (Postgres + RLS across 31 tables), Node/TypeScript, and the Evolution API for WhatsApp. Multi-tenant, with hardened security and an AI layer in production (Claude Haiku). I architected the entire system, orchestrating AI agents for execution.

06

The current state

In closed alpha, with the first real producers. From an idea to a distributed, working product — from first commit to deploy, from brand to infrastructure.