// portfolio.tsx
I build software that scales, from the database to the interface.
I'm Carlos, a full stack developer based in Cartagena, Colombia. I design APIs, databases and frontends for real B2B products — from a hotel booking platform used by 1,000+ travel agencies to a multi-tenant POS that keeps selling without internet and AI agents that automate business processes.
carlos@portfolio: ~
➜ ~
- Years of experience
- 3+
- Agencies on Booking Connect
- 1,000+
- Operational time saved with RPA
- -40%
- Hotels on the petty cash system
- 13
// featured projects
view all →booking-connect.nest.tsIn production
Booking Connect
B2B hotel booking platform for travel agencies
NestJSTypeScriptMongoDB / MongoosePassport JWT+8
pargo.nest.tsMVP in demos
Pargo
Multi-tenant SaaS POS for restaurants and hotels on Colombia's Caribbean coast
NestJS 12FastifyTypeScriptPostgreSQL (RLS)+11
catoca.tsxIn production
CATOCA
Online store and brand site for a single-origin coffee from the Sierra Nevada
React 19ViteTypeScriptTailwind CSS v4+5
catoca-ventas.nest.tsIn development
CATOCA · Sales system
Sales, batch inventory, commissions and DIAN pre-invoicing for a coffee exporter
NestJS 12FastifyDrizzle ORMPostgreSQL 18+9