Henricus Louwhoff

Henricus is a backend software developer with a passion for complex systems and elegant code architecture. Specializing in Elixir and Rust, he thrives on solving challenging technical problems and untangling intricate backend logic, though he openly admits frontend development isn't his forte. When he's not deep in code, Henricus enjoys analog and digital photography and considers being a dad his greatest achievement and defining characteristic.

January 2, 2026

The Benefits of Quine Apps

I’ve been experimenting with Quine apps recently, building a blog and a kanban board that work entirely offline. The approach is simple but powerful, and it’s made me rethink how we build web applications. A Quine app is self-contained code that can modify itself. When you add or change items in my kanban board, they’re temporarily sto...

December 31, 2025

The Shift to Spec-Driven Development: From Vibe Coding to Agent-Powered Precision

What Is Spec-Driven Development? Spec-driven development represents a fundamental shift in how we approach AI-assisted coding. Instead of the iterative “vibe coding” approach (where developers prompt an AI, review code, adjust, and repeat), spec-driven development flips the traditional relationship between specifications and code. The ...

November 28, 2025

What Happens When You Stop Writing Code and Start Explaining It Really Well

I was challenged to design a workforce management system with a few constraints: make it highly customisable with fewer primitives, break it into smaller services, and design it to be built 99.5% by AI agents rather than people. What would you do differently if an agent was the primary developer? I'm building Mosaic to find out. It's a...

October 14, 2025

My AI-Supported Development Workflow

Inspired by a16z's exploration of the AI software development stack, I've built an approach that uses multiple AI models, each for what it does best. This is how I work through projects from start to finish. The Planning Phase I begin every project by brainstorming with GPT-5 High, which excels at big-picture thinking and structured pl...

September 2, 2025

Let the Tools Do the Talking: Why Automated Code Style Enforcement is Essential for AI-Assisted Development

In our previous post about building an AI toolkit for our team, we explored how AI agents are becoming integral to our development workflow. Today, let's dive into a critical foundation that makes AI-assisted development truly effective: automated code style enforcement. The Challenge: Teaching AI Agents Your Team's Style When AI agent...

September 2, 2025

Building an AI Toolkit for Development Teams: A Comprehensive Guide to Agent Configuration Files

As AI agents become increasingly integrated into software development workflows, establishing a structured approach to agent configuration is crucial for team efficiency and consistency. This guide outlines a comprehensive system for organizing AI agent instructions through strategic file placement and content organization. The Three-T...