Hi, I'm Andres

Software engineer writing about what actually works in production.

Software engineer & solutions architect writing about AWS, .NET, and modern web development.

Latest posts

Security July 13, 2026 · 8 min read

How I Caught a Bot Swarm Hiding in My PostHog Analytics

A real story of detecting bot traffic with PostHog: how a viewport that did not match the screen size gave the crawlers away, and how I pinned them again once they patched that tell using user agent, OS, synthetic referrers, and sub-second event bursts.

#posthog #bot-detection #analytics

Tooling July 11, 2026 · 13 min read

Claude Code as an Orchestrator: Using Cheaper Models to Ship Real Projects

A practical guide to running Claude Code like a small team: a strong orchestrator model that delegates design, implementation, review, and testing to cheaper, faster subagents. With ready-to-copy .md files.

#claude-code #ai-agents #tooling

.NET & C# February 15, 2026 · 12 min read

Middleware in .NET Explained: How the Pipeline Actually Works (and Common Mistakes)

Understand how the ASP.NET Core middleware pipeline works under the hood, learn to write custom middleware correctly, and avoid the mistakes that cause silent bugs in production.

#dotnet #csharp #middleware

Databases October 16, 2025 · 18 min read

PostgreSQL Mistakes You're Probably Making (And How to Fix Them)

A comprehensive guide to avoiding common PostgreSQL pitfalls that can compromise performance, data integrity, and maintainability.

#postgresql #databases #sql

.NET & C# September 29, 2025 · 4 min read

Why You Should Start Using Visual Studio Code for Your .NET Projects

A step-by-step walkthrough of creating, running, and serving a .NET Web API entirely from Visual Studio Code, with no full Visual Studio required.

#dotnet #csharp #vscode

.NET & C# September 28, 2025 · 9 min read

How to Implement API Versioning in .NET Core Web APIs: Best Practices and Migration Guide

Learn how to implement API versioning in .NET Core Web APIs, avoid breaking changes, and migrate existing services safely.

#dotnet #csharp #api-design

JavaScript & React September 24, 2025 · 11 min read

React useState Anti-Patterns Every Reviewer Should Flag

From duplicated state to broken hooks — how to spot and fix the most common useState mistakes in React pull requests.

#react #javascript #hooks

JavaScript & React September 22, 2025 · 3 min read

React Canary Activity: Hide UI Without Unmounting and Preserve State Instantly

Learn how React's new <Activity /> component hides elements without losing state or effects — now available in the Canary release.

#react #javascript #frontend