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In build · go-live Jan 2027Sistema Contable + Nómina
Payroll & accounting engine
Replaces a factory's ERP: Colombian payroll, automatic accounting, DIAN e-payroll and PILA — with 569 tests behind it.
Full-stack developer Bucaramanga, Colombia
Camilo Castro
Motto: 戦え, tatakae — “fight”
I build software that reaches production — from websites for local businesses to the payroll engine of a bread factory.
Selectedwork
Five projects, from a hotel's front door on the web to the systems that close a factory's month.
02of 05
Live · hotellogistico.comHotel Logístico
A hotel's front door, WhatsApp-first
A framework-free landing for a hotel in Santa Marta that turns visits into WhatsApp bookings.
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Live · calzadoleons.comLEONS Footwear
Wholesale catalog for a shoe factory
A wholesale catalog for a shoe factory, with a Python pipeline that makes every product photo match.
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Academic · open sourceKiln
Distributed image processing
Image batches processed in parallel by worker nodes over RabbitMQ, on five virtual machines.
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In productionInventario Materia Prima
Raw-material inventory for a bread factory
Real-time raw-material stock for a bread factory: entries, exits, counts, audit and branded reports.
More work
A degree project, side projects and tools made for specific people.
Degree project · in progress 2026
Calzado Leons
Production planning — degree project
Client system 2026
Conciliaciones
Bookkeeping automations
Also built
Smaller or earlier projects, listed for the record.
See all (8)
| Year | Project | What it is | Built with | Link |
|---|---|---|---|---|
| 2026 | Colegio Travesuras | Lunch-program management for a kindergarten: daily log, payments, debts and fortnightly closings | Private client code | |
| 2026 | Miga | Weekly store settlement for three roles, with autosaved sheets and side-by-side reconciliation | Private client code | |
| 2026 | Bizcopan Calidad | Quality-document intranet: versioned files and DOCX-to-PDF technical sheets at the edge | Private client code | |
| 2026 | LouLoz | Shopify storefront for a Colombian footwear brand | louloz.com: LouLoz (opens in a new tab) | |
| 2026 | Facturación e Inventario | Desktop invoicing and inventory with PDF invoices and Excel reports | GitHub: Facturación e Inventario (opens in a new tab) | |
| 2025 | MVT Integradores | Server-rendered project catalog with search, pagination and a comments API | GitHub: MVT Integradores (opens in a new tab) | |
| 2025 | SazónApp | Food-ordering mobile app with real-time order status | GitHub: SazónApp (opens in a new tab) | |
| 2025 | MercAnalyzer | Mercado Libre price comparison: Python scraper, Next.js API and React client | GitHub: MercAnalyzer (opens in a new tab) |
WhatI do
Four kinds of problems I keep getting paid — or asked — to solve.
Business systems
Websites that sell
Real-time & distributed
Automation & data
Toolbox
- Languages
- TypeScriptJavaScriptPythonSQLJavaDart
- Front end
- ReactNext.jsViteTailwind CSSCSS ModulesTanStack QueryReact Hook Form + Zod
- Back end
- Node.jsExpressFastAPIHonoSocket.IOElectron
- Data
- PostgreSQLSQLite / libSQL (Turso)MySQLSQL ServerMongoDBDrizzlePrismaSQLAlchemy
- Infrastructure
- DockerVercelCloudflare Pages & R2GitHub ActionsRabbitMQRedis
- Testing
- pytestVitestPlaywrightJestSupertest
About
The careful part is where trust gets built.
I'm a full-stack developer from Bucaramanga, Colombia, finishing Systems & Informatics Engineering at UPB (graduating late 2026). Most of what I build runs real businesses — and I work with the people who use it, from the first interview to the deploy.
- Based in
- Bucaramanga, Colombia · UTC−5
- Studying
- Systems & Informatics Engineering, UPB — graduating late 2026
- Currently
- Preparing the payroll system's parallel run and closing my degree project
Let's build something that ships.
Full-time roles, freelance projects, or a system your business has outgrown — write to me.
Elsewhere