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Luis Mori Guerra

Engineering Manager / Technical Lead

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How AI Helps Engineers Evolve and Scale Modern AppsThe Pieces of Modern, Effective Software DesignBlueprint Over Bytes: How Modern Engineering Shifted From Writing Code to Designing SystemsFrom Intuition to Metrics: How to Know You're Using AI CorrectlyClaude Sonnet 4.6 1M vs Composer 2.5 Fast: A Practical LLM Comparison

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Software Architecture

A topic hub collecting every article tagged Software Architecture. Use it to explore related posts and follow this theme across the site.

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Software Architecture System Design Engineering DevOps AI Agents

The Pieces of Modern, Effective Software Design

A practical ladder for growing a software system from one app and one database into observable, event-driven, permission-aware, AI-ready architecture.

Jun 1, 2026 18 min read
AI Agents Prompt Engineering LLM Software Architecture Evaluation Anthropic OpenAI

How to Write Robust System Prompts for AI Agents Across LLMs

There is no truly bulletproof system prompt. But there is a practical engineering standard for making prompts far more robust across Sonnet, Haiku, GPT, and reasoning-style models.

Apr 22, 2026 20 min read
Spec Kit Legacy Modernization Spec-Driven Development Brownfield Software Architecture Migration Strategy

Before You Copy Legacy Code: A Spec-to-Spec Migration Workflow for Modernizing One Feature

An exploratory, source-backed article on reverse-engineering one feature into current-state specs in the old repo, then using those artifacts to drive a safer implementation in a new repo and a new stack.

Apr 14, 2026 18 min read

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