Óscar GallegoI build with coding agents and publish how they work, including where they fail, with tests and real results.

1. May 2025 - Present
   Software Engineer

   Stibo DX

   • Java
   • Quarkus
   • Angular
   • TypeScript
   • SQL
   • Docker

   Backend and frontend work on editorial software for news organizations: Java services (Dropwizard and Quarkus) with SQL and Docker, and Angular applications. Right now I'm building a new microservice with hexagonal architecture.

2. August 2024 - March 2025
   Software Developer

   MavelPoint

   • Next.js
   • Astro
   • Zustand
   • NestJS
   • PostgreSQL
   • Prisma

   Next.js and Astro applications, built with load time in mind. Frontend state with Zustand and modular components to avoid duplicated code. On the backend, REST APIs in NestJS and Express over PostgreSQL with Prisma. Authentication with Clerk, and working with designers in Figma.

3. January 2024 - August 2024
   Software Developer

   Check‑in Scan

   • Expo
   • React Native
   • Next.js
   • NestJS
   • Stripe
   • JWT

   Built a hybrid Expo app (React and React Native) for desktop and mobile, a Next.js payments platform with Stripe for subscriptions, and a NestJS (Fastify) API that sends tourism data to ISTAT, Italy's national statistics institute. Data sync with Redux and React Query; authentication with OAuth and JWT.

4. April 2022 - November 2023
   Junior Web Developer

   AddComm

   • JavaScript
   • Flowize
   • REST APIs

   API integrations and data transformation in Flowize, a low-code platform, for several clients, in a hybrid team in Málaga.

iOS · App Store

Rydger

The true cost and maintenance of your motorcycle or car

Works out what every kilometre on your car or motorcycle really costs and reminds you about maintenance. It reads the odometer with the camera, tracks your rides and keeps the data on your device, synced through iCloud.

App Store↗See the app→

iOS · App Store

WealthSim

Compound interest calculator for iPhone

Estimates how your contributions could grow at the rate of return you choose, and separates what you put in from what interest earns. With monthly goals and plan comparisons, on iPhone and on the web.

App Store↗See the app→

• REBT Calculator

  Low-voltage cable sizing & voltage drop

• SnapCompress

  Free image compression tools

• I'm Óscar Gallego Ruiz, a software engineer and fullstack developer in Málaga, Spain (studied at the University of Málaga). I came to programming after a career change and have been writing software professionally since 2022: first with React, Next.js and NestJS, and now at Stibo DX, which makes editorial software for news organizations.

• At Stibo DX I started on the Angular frontend and now work as a fullstack engineer: Angular applications and Java services with Dropwizard and Quarkus, SQL and Docker. Right now I'm building a new microservice with hexagonal architecture.

• Before that I worked at MavelPoint, Check‑in Scan and AddComm, where I built Next.js and Astro apps, an Expo app for desktop and mobile, Stripe payments and NestJS APIs.

• Outside work I build native iOS apps like Rydger and WealthSim, tools like REBT Calculator and SnapCompress (see all my projects), write on this blog about the tools I try (Astro, coding agents, SEO), and maintain GA4 Manager, an open-source Go CLI that sets up Google Analytics and Search Console from a YAML file.

Óscar Gallego Ruiz is a software engineer in Málaga, Spain. His background is mainly in frontend development, and he now works as a fullstack engineer at Stibo DX, using Angular and Java. Previously he worked with React, Next.js and NestJS. The blog covers AI coding agents, Astro and iOS apps, based on hands-on tests in his own projects.