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starker-xp/README.md

Guillaume CAOUISSIN

Backend developer & DevOps — specialized in legacy modernization, CI/CD pipelines, and Infrastructure as Code.

About

I founded Miinded, a company where I wore many hats: Web3 development (Solidity & Bitcoin smart contracts, dApps), backend services with NestJS (custom modules, APIs), and a Unity 2D game project I took over and delivered — learning C# on the job to meet critical deadlines. Beyond application code, I've built and maintained full InfraOps stacks — CI/CD pipelines, infrastructure automation, and deployment workflows.

My core profile: migrating legacy codebases, cleaning up technical debt, and setting up the CI/CD & IaC foundations that make teams move faster.

Currently building an AI-driven commercial project around condominium accounting — goals: solve my own real-world need, learn to scope AI usage effectively, and understand the true production costs of AI-assisted development. Also deepening my Terraform and Ansible skills for Infrastructure as Code.

Tech stack

Area Technologies
Backend NestJS, Node.js, C# / .NET Core, PHP, Symfony
Frontend VueJS, NuxtJS
Databases MySQL, Redis, RabbitMQ, Postgres
Web3 Solidity, Bitcoin, Smart Contracts
Game dev Unity 2D, C#
InfraOps / CI/CD Docker, Kubernetes, CI/CD pipelines, IaC
Currently learning Terraform, Ansible

Open-source projects

NestJS packages (production)

Project Description
nestjs-storage NestJS module for file storage abstraction
nestjs-blockchain NestJS module for blockchain integration
nestjs-monitoring NestJS module for monitoring application

Legacy migration tooling (production)

Built to migrate a PHP 4.x application to PHP 5.x — 200+ client databases, one-month deadline.

Project Description
database-checker MySQL schema diff & sync tool — generates ALTER/CREATE/DROP statements between a JSON reference schema and a live database
code-migrator Automated legacy code migration to PSR-4 namespaces — extensible transformation pipeline using PHP's native tokenizer

API wrappers (production)

Project Description
buzzexpert-bundle Symfony bundle — full wrapper for the Buzz-Expert API (SMS, MMS, voice messages) with token-based auth and multi-account support

R&D / Experimentation (archived)

Project Description
cqrses-bundle From-scratch implementation of CQRS and Event Sourcing patterns for Symfony — automatic code scaffolding for a given business domain (archived)

The projects above represent a sample of my open-source contributions. Production work at Miinded (40+ projects, 15M€ generated for clients) is in private repositories.

Pinned Loading

  1. cqrses-bundle cqrses-bundle Public

    Implémentation de l'architecture CQRS + Event Sourcing

    PHP

  2. database-checker database-checker Public

    PHP 1

  3. docker docker Public

    Env de dev

  4. lapero.net lapero.net Public

    PHP