Autor: Juanlu, elGuerre

¡Hola! Soy Juan Luis —aunque muchos me conocen como Juanlu o "El Guerre"—, desarrollador de software con más de 20 años de experiencia y un claro enfoque técnico en tecnologías Microsoft, especialmente .NET y Azure. Me dedico a diseñar, liderar y construir soluciones eficientes y escalables para entornos empresariales. A lo largo de mi carrera, he trabajado como arquitecto, tech lead y referente técnico en múltiples proyectos nacionales e internacionales, liderando desde la definición de arquitecturas hasta la implementación de microservicios en Azure (AKS, App Services, CosmosDB, API Management…). También tengo una sólida base en DevOps, CI/CD con Azure DevOps y uso de herramientas como Docker, Terraform y Helm. Además de la parte técnica, soy mentor, formador y ponente, con presencia activa en comunidades tecnológicas, tanto internas como públicas. Me apasiona la innovación, la automatización y seguir aprendiendo día a día. Me esfuerzo por mantener un enfoque pragmático, ágil y orientado a la calidad, tanto en el desarrollo como en la gestión de equipos y proyectos. Fuera del trabajo, disfruto planificando viajes con mi familia, corriendo para despejar la mente y perfeccionando mi inglés a base de frases útiles del día a día. También soy el autor de este blog, donde comparto lo que aprendo y construyo, especialmente en torno a .NET, Azure, IA generativa y buenas prácticas en el desarrollo de software.

⚙️ How I Fully Automated My New Dev Machine Setup. Windows + Terminal (PowerShell + WSL)

New envrionment setup

Last week I received my new Yoga Pro 9 16IAH10 – Type 83L0 (specs here), and of course… installing everything manually wasn’t an option 😅. So, I automated the entire process — from Windows setup to terminal styling — using PowerShell and a few carefully crafted scripts. 🇪🇸 Spanish Summary / 🇬🇧 English Summary 🇪🇸 … Sigue leyendo ⚙️ How I Fully Automated My New Dev Machine Setup. Windows + Terminal (PowerShell + WSL) →

The Day npm decided to Break: Fixing Angular 18 Builds on Windows – and the hidden config that caused it all

The Day npm Decided to Break: Fixing Angular 18 Builds on Windows — and the Hidden Config that Caused It All

💭 Introduction Today, for no apparent reason—or at least that’s what it seemed to me—I stumbled upon a problem that completely broke my build. It started with what looked like a typical npm install, but suddenly nothing worked anymore. If you’ve ever faced cryptic errors like: Cannot find module @rollup/rollup-win32-x64-msvc Cannot find module @esbuild/win32-x64 …then … Sigue leyendo The Day npm decided to Break: Fixing Angular 18 Builds on Windows – and the hidden config that caused it all →

Publish WordPress Drafts with Custom GPT + OpenAPI

ChatGPT Image Sep 10, 2025, 12_35_56 AM

Learn how to connect a Custom GPT to WordPress.com with OpenAPI, OAuth2 tokens, and publish drafts automatically.

From Loud & Hot to Cool & Quiet

From Loud & Hot to Cool & Quiet

The Order That Finally Silenced My Dell XPS 15 (Docker Tweaks Optional) How I cooled a Dell XPS 15, cut fan noise & temps with BIOS + power‑plan tweaks—plus optional Docker & WSL2 tuning. Copy‑paste ready for WordPress. Why This Matters — A Personal Field Report This is my personal story fixing performance and overheating problems on a Dell XPS 15 (9570, … Sigue leyendo From Loud & Hot to Cool & Quiet →

How to install Redis & Mongo on a «Raspberry pi» using Docker and connect remotely

How to Install Redis and MongoDB on a Raspberry Pi Using Docker

📘 Introduction Deploying Redis and MongoDB 4.x on a Raspberry Pi means dealing with ARM compatibility, container networking, and security best practices. Redis is fully multi-architecture, while MongoDB requires using version 4.x on Pi to avoid ARMv8.2-A dependency errors. You'll install Docker on the Pi, deploy both services with Docker Compose, manage your Pi from … Sigue leyendo How to install Redis & Mongo on a «Raspberry pi» using Docker and connect remotely →

Boosting Developer Productivity with Git Worktree and AI Agents

git worktree

Introduction As a developer exploring the integration of AI agents like Claude, Gemini CLI, and ChatGPT into my daily workflow, I recently discovered a powerful but often overlooked Git feature: git worktree. At first, it sounded like one of those "cool but unnecessary" Git features. But once I started working with AI agents in parallel … Sigue leyendo Boosting Developer Productivity with Git Worktree and AI Agents →

Extending Semantic Kernel with MCP and Google Gemini: Real‑Time Weather Agent

Introduction In our previous article, you learned how to expose a weather API using [McpServerToolType] and [McpServerTool]. In this follow-up, we’ll integrate that same API with Semantic Kernel, but we’ll use Google Gemini v2.5 as the LLM to enable automatic tool invocation, something not possible with ONNX at moment I'm writing this post. Architecture Overview … Sigue leyendo Extending Semantic Kernel with MCP and Google Gemini: Real‑Time Weather Agent →

Implementing Embeddings via ONNX with Semantic Kernel for Local RAG Solutions in .NET

Flowchart diagram showing a RAG pipeline: a user sends a request to a .NET API, which performs embedding generation (highlighted with a large magnifying glass), then queries a vector database, and finally uses Phi-3 LLM to generate the response.

Introduction In our previous article "Building a RAG API with .NET, Semantic Kernel, Phi-3 and Qdrant", we focused on setting up a local Retrieval-Augmented Generation (RAG) API with minimal dependencies on external services. One key piece of that architecture, which we only briefly touched upon, is the embedding service. In this follow-up, we'll dive deeper … Sigue leyendo Implementing Embeddings via ONNX with Semantic Kernel for Local RAG Solutions in .NET →

[TIP] From Custom Converters to Attributes: Polymorphic Serialization Made Easy in .NET

Polymorphic serialization in .NET

Introduction Over the past few days, I’ve been deep in the trenches working with serialization of complex objects in .NET. Like many of us, my go-to method was to create custom JsonConverter classes—the usual routine. But then I stumbled upon something surprising: new polymorphic serialization features introduced in .NET 8. Naturally, curiosity kicked in, and … Sigue leyendo [TIP] From Custom Converters to Attributes: Polymorphic Serialization Made Easy in .NET →

Automate Unit Tests in .NET with GitHub Copilot Agents: Prompt, Iterate, and Win!

Running .NET unit tests generated by Copilot using dotnet test

Introduction Writing effective unit tests is a crucial part of professional software development, especially in modern .NET projects. Lately, I have been refining my approach to unit testing by leveraging GitHub Copilot and the new Copilot Agents feature in Visual Studio Code. Instead of manually writing every test, I discovered a powerful workflow where AI … Sigue leyendo Automate Unit Tests in .NET with GitHub Copilot Agents: Prompt, Iterate, and Win! →