Service · 02 · Custom software

Systems built
to measure,
not from a mold.

We design web platforms, apps, configurators and integrations: our own solutions and client projects, built to remain useful, maintainable and able to evolve.

Product + engineering + design in one team

Modern, maintainable stack (no gambles)

We hand over code, not hostages

What we do

Six kinds of project we know how to ship.

Web platforms

SaaS apps and dashboards. React, Next.js, Node. Auth, payments, multi-tenant.

Mobile apps

Native iOS and Android or React Native. Notifications, offline-first, device integration.

Configurators

Sales and quoting wizards. Conditional logic, live calculations, built-in lead-gen.

API · Integrations

We connect systems that didn't talk. WhatsApp, MercadoPago, ERPs, CRMs, whatever's needed.

E-commerce

Custom stores when Shopify falls short. Complex catalogs, B2B, per-product configuration.

Maintenance

We take on legacy systems, stabilize them and grow them. Without tearing it all down.

Our products

What we build
when we build it for ourselves.

Three solutions born from real needs, each at a different stage of evolution. Every one combines product thinking, engineering and a concrete use of technology.

belia.

AI agents for business

AI agents · Automation

Belia.io

Handles WhatsApp inquiries, interprets documents and automates tasks on top of the management system a company already uses.

AIWhatsAppB2B

belia.io

Configurator · Smart spaces

CotizaTuDomotica.com

An assistant that guides users through designing their space automation and getting a ballpark quote.

WizardConversionB2C

cotizatudomotica.com

API · Messaging

Arplyx.com

Infrastructure we use to connect our systems with WhatsApp through a stable API.

SaaSAPIB2B

arplyx.com

Web platformsSaaSiOS · AndroidConfiguratorsE-commerceAPI · IntegrationsDashboardsAutomationsMigrationsMaintenance

Tech stack

Tools that last,
not the flavor of the month.

We choose mature technologies with a community and long-term support. If a new tool solves a problem better, we use it — but not at the cost of your maintainability.

TypeScript

Base language

React

Frontend · Web

Next.js

SSR · Web frameworks

React Native

Mobile

Node.js

Backend · API

PostgreSQL

Database

Redis

Cache · Queue

Docker

Infrastructure

AWS · GCP

Cloud

Vercel

Hosting · Edge

Stripe · MP

Payments

WhatsApp API

Messaging

How we work

Five steps. We iterate fast,
no surprises on the invoice.

We discover

An initial chat. We understand the problem, the users and the real constraints.

We design

Wireframes, flows and a technical proposal. Fixed quote per stage.

We build

Short sprints. You see progress every week in a real environment.

We launch

Deploy on our infra or yours. Migration, training, documentation.

We maintain

Optional monthly SLA. Updates, monitoring and continuous improvements.

Systems builtto measure,not from a mold.