Portfolio

Rodrigo Vaamonde
I build backend software that scales, and lead the teams that ship it.
Software developer with 17 years of experience, specialized in Java (Spring Boot) backend systems and scalable microservice architectures.
About
About me
Today I'm a Tech Lead at Mercadona, staying hands-on with the code. Before that, I spent fifteen years at Ayco Internet running full-stack projects end to end, from requirements to deployment.
I like understanding why a feature matters, not just building it. Open to freelance collaborations.
Services
Services
Add something to what you already have
If you already have a website or an app and need to add something specific — online payments, connecting another tool you use, automatic notifications — I take care of that piece without touching the rest.
- I check how it fits with what you already have
- I build it and test it thoroughly
- I explain how it works, no jargon
Estimated delivery: 1.5–3 weeks
The engine that runs your business behind the scenes
I build the part that makes your business work — bookings, availability, pricing, users — for your website, app, or technical team to use. Ideal if you already have someone handling the visible part and just need what runs behind it.
- Bookings or orders with real-time availability
- Configurable pricing, conditions, or seasons
- Secure access for you and your customers
- Documented so your team can use it without depending on me
Estimated delivery: 3–6 weeks
Your website or app, ready to use
If you don't have anything built yet, I create the complete solution: the part your customers see and the system that manages it behind the scenes — bookings, users, whatever you need — connected and working from day one.
- Website or app with the screens you need
- Connected management system (bookings, orders, users...)
- Launch included: live and accessible to your customers
Estimated delivery: 4–6 weeks
Projects
Projects
Experience
Experience
2023 — Present
Senior Back-End Developer & Tech Lead · Mercadona
Tech Lead of a team of 3, alongside 4 more developers, on a distributed architecture of close to 15 microservices: asynchronous communication with Kafka, Hexagonal Architecture, DDD, automated testing and CI/CD.
MicroservicesDistributed systemsKafkaCI/CDDDDHexagonal Architecture2008 — 2023
Full-Stack Web Developer · Ayco Internet
Fifteen years building full-stack and mobile projects for a broad client portfolio: e-commerce, admin panels, intranets, logistics systems and REST APIs.
Spring BootPHPSymfonyLaravelJavaScriptFlutter



