Guillaume Pineda

SRE & Platform Engineer • Founder of Ouvrage Systems
📍 Konstanz, Germany

Designer of minimalist and high-performance execution infrastructures. I transform technical debt and industrial legacy into declarative, resilient systems built to last.

Brownfield / Legacy • Anything Declarative • AI Exoskeleton • Wasm & Systems

🛠️ Philosophy & Commitments

1. Respect for the Existing (No Clean Slate)

I reject the modern reflex of wanting to rewrite everything as soon as a system is old. Working on legacy industrial codebases (active since 1996) has taught me respect for the work of the elders. I apply patterns like the Strangler Fig, building modern build scaffolding (CMake, Conan) around historic code to support its longevity without disrupting production.

2. Return to First Principles

From network protocols to Pratt parsers, I prioritize mastering theoretical fundamentals (formal grammars, graph theory) so I am never blocked by the black box of modern tools. If a proprietary tool works, I use it (Windows 11, WSL2, remote SSH). I never automate a task without first executing, auditing, and optimizing it by hand.

3. AI as an Exoskeleton (Not an Oracle)

Artificial intelligence must be a mechanical exoskeleton for the builder. It accelerates exploration, boilerplate generation, and hypothesis testing, but architectural design and mental model control remain 100% human. AI should never be treated as a probabilistic oracle to which unmastered black boxes are outsourced.

For an in-depth deep dive into this approach and production engineering takeaways:
👉 From the Whiteboard to First Principles: Building Frugal and Deterministic Systems in the Age of AI

🏛️ The Ouvrage Systems Ecosystem

In April 2026, at age 29, I founded Ouvrage Systems to group low-level, declarative tools (Config as Data) under a single banner for platform engineers and SREs:

• fd-harness: Low-level I/O control and observability harness, intercepting and multiplexing file descriptors (pipe(7), dup2(2), SCM_RIGHTS) for process supervision and streaming.
• ouvrage-calque-go: Declarative templating compiler using semantic overlays (calques), without the complexity of mutable variables found in Helm or Jinja.
• ouvrage-stream-go: Implementation of the Ostream protocol, treating an infrastructure codebase as an immutable stream data bus.
• py-hid-declarative: Type-safe suite of codecs and compilers for USB HID protocols (born from the practical need to map my Thrustmaster T.16000M joystick for console gaming).

⚓ AML Connect: The Industrial Sandbox

To test and demonstrate these tools without violating professional NDA constraints (Siemens cRSP), I use a fictional yet realistic case study: AML Connect (Atlantique Manutention et Levages). I document on this blog the step-by-step modernization of this imaginary port handling company facing 2000s-era technical debt.

📖 Background & Origins

As the eldest of five children raised in the countryside of Loir-et-Cher¹, I grew up with a constant curiosity about how systems work, devouring illustrated encyclopedias (La Grande Imagerie) and pushing family computers to their limits.

After learning programming logic with FreePascal in middle school, self-teaching on Site du Zéro and developpez.net², and completing CPGE MPSI/MP, I joined INSA (class of 2020). There, I developed a taste for deep upfront design (spending time at the whiteboard modeling architectures before coding) and structuring raw domain data (custom log parsers for Elastic, SSOT tracking tool using Vue.js + Google Sheets in a Junior Enterprise).

Since arriving in Konstanz in October 2020, I apply this rigor daily to critical industrial platforms.