Hey, I'm Xavier.
I'm a software developer who builds things with AWS and AI — then writes about what worked, what broke, and what it actually cost. I like making useful stuff, helping people, and having fun along the way.
I build serverless architectures, AI agents, browser extensions, and CLI tools. I contribute to open source. I compare expensive APIs against cheaper alternatives and tell you the truth about what's worth your money.
This site is where I document the journey — the projects I ship, the tools I evaluate, the costs I track, and the things I break along the way. If something here saves you time or money, that's the whole point.
◆ Real projects with real AWS cost breakdowns
◆ Bilingual content in English and Spanish
◆ Everything is open source
What I Write About
Every post comes from something I actually built, broke, or spent money on.
AWS & Cloud
Serverless patterns, event-driven systems, and data lakes — with real architecture diagrams and actual dollar amounts. Not theory, just what I've deployed.
🤖AI/ML in Practice
AI agents, model comparisons, cost optimization. I test DeepSeek vs Claude, build A2A protocol wrappers, and tell you what's hype and what actually works.
🛠️Dev Tools & Fun Builds
Browser extensions, CLI tools, workflow hacks. If I wished a tool existed and it didn't, I probably built it — and open sourced it.