Guillermo Lynen
Available

From requirement
to deploy

Full Stack Developer

I build systems that scale, analyze them with business judgment, and lead them with team vision. 7+ years doing it.

7+
Years of experience
12+
Technologies mastered
3
Distinct roles in one

// HOW I THINK

Four principles that guide every project

// judgment

I understand the problem before writing code

Functional analysis is not a formality — it is where a project is won or lost. Years on both sides taught me that the most valuable code solves the right problem.

// user

I think about who will use what I build

Nine years of graphic design before code are not a detail — they are why I never lost sight of the user. The interface is the product for whoever uses it.

// architecture

I build so it can scale

Architecture that cannot be maintained or scaled is not an achievement, it is a problem. I design systems and write code that can be maintained, scaled, and self-managed by clients through CMS and other content systems.

// quality

I do not ship until I would use it myself

Testing is not the last step — it is the only honest way to know if what I built delivers what I promised. I review as a user, not as the author.

// WHAT I BUILD WITH

My technology stack

In a world where technology advances every day, my stack is the result of years of experience, learning, and adaptation — with the goal of keeping on learning and improving my skills.

zsh
guillermo@stack:~$ ls -R ./stack/ --prod
# frontend/
ReactNext.jsAngularTypeScriptJavaScriptTailwind CSSBootstrap
# datos/
PostgreSQLMySQLMongoDBSQL Server
# backend/
Node.jsLaravelPHPPythonRubyExpressSymfonyC#
# ia/
Open CodeClaude CodeClaude DesignGeminiChatGPT
# devops/
DockerGitGitlab CI/CD
# 27 paquetes · 5 categorías · 100% en producción

// CONTEXT

Where the judgment comes from

7+ years in technology, starting as a systems administrator and functional analyst through to leading development of large-scale internal systems with end-to-end delivery. That teaches you to build things that actually have to work, with real teams and users who cannot afford mistakes. Today in the private sector, I bring that same judgment to every project.

$ git log --oneline --graph

a1f9c2eHEAD → main
Full Stack Developer
feat: lead architecture and end-to-end delivery
CodingCo·2024 — present
7b3d014v2.0
Technical Lead
feat: team, standards and systems that scale
GOPAP·2019 — 2024
3e8a9d1v1.0
Product Owner
init: functional analysis and product vision
GOBACE·2016 — 2019

Prefer the full CV?

$ CONTACT --OPEN

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Buenos Aires · Argentina