Become a sponsor to Sergio Fernández
Hi there! 👋 I'm Sergio Fernández Rubio (GeiserX), a Staff AI Engineer with a pre-AI-era background on on DevOps, Cloud, Kubernetes, Networking and Software Engineering.
My journey started when I was just a curious 12-year-old kid, begging my mom to buy me the book "Hacking Exposed 4: Network Security Secrets & Solutions" published by McGraw Hill. I still get chills thinking about it!
Honestly though, after reading it, I realized I'd prefer building things rather than breaking them. Fast forward over two decades, and here I am — fully embracing life in the cloud, building and scaling apps, and loving every second of it.
Featured work
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GeiserX/awesome-spain
Una selección de software open source que da soporte específico a España
Python 276 -
GeiserX/Telegram-Archive
Own your Telegram history. Automated, incremental backups with a local web viewer that feels just like the real app. Docker-ready and supports public chat sharing
Python 111 -
GeiserX/awesome-europe
A curated list of open source software for Europe — institutions, regulations, standards, and cross-border infrastructure
Python 75 -
GeiserX/LynxPrompt
Self-hosted & federated platform for AI IDE/Tools Rules and Commands via WebUI & CLI - Generate, browse, store, share AGENTS.md, CLAUDE.md, and more
TypeScript 34 -
GeiserX/whisper-subs
Jellyfin plugin for local AI-powered subtitle generation using Whisper - all processing stays on your server
C# 41 -
GeiserX/Pumperly
Open-source fuel & EV route planner. Real-time prices across enabled countries. Self-hostable.
TypeScript 17