Brian Domínguez · Software engineer · Mexico City

I digitize businesses

I have spent more than five years building software in production: customer apps, portals, back offices and mobile applications. I find the manual process that is holding a business back and build the tool that fixes it.

Brian Domínguez
5+ years building software in production
FinTech payments, 2FA, biometrics and KYC
80% less time spent on an invoicing process
Web, iOS and Android shipped to the App Store and Google Play
React TypeScript Next.js Astro Tailwind Swift Kotlin Node.js Medusa .NET Core SQL Server Docker Storybook Sentry

What I can build

The same work I do for a financial institution, at the scale of your business.

Services and process →
Starting point

Process diagnosis

A visit to your business to watch the operation as it happens. You leave with the bottleneck identified, a proposal for what to build first and an estimate.

Most common

Custom tool

The system you are missing, built for your operation: orders, inventory, appointments, quotes, daily closings and reports. It works on the phone at the counter and on the computer in the office.

Full product

Portal, app and mobile

Public site, customer app and iOS/Android applications, with a payment gateway, two-factor authentication, biometrics and identity verification.

What I have built

Published work you can open, and the production software that lives behind a login.

See all projects →

Software in production

FinTech · Nov 2025 – present

Customer app with a payment gateway

Mercado Pago with card tokenization, 3D Secure and PDF receipts; alternative methods through BBVA, PayCash, PuntoRed and GestoPago. Two-factor authentication, biometrics, session control and CURP/RFC validation.

ReactRedux ToolkitTailwind
Public portal

Corporate site from scratch

Landing page, product microsites, contact forms and a branch locator with Google Maps. Lighthouse optimization, WebP images and SEO, consuming the in-house CMS.

ReactViteTypeScript
Back office

Self-service CMS

WYSIWYG editor, banner and FAQ management, media library, brand configuration, roles and permissions with an audit trail, and operations dashboards integrating Power BI.

ReactRBACPower BI
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