Driving Innovation and accelerating growth through AI-Augmented Tech Leadership.

I'm Sébastien, aka Plopix, I live in California, and I come from France. I am a passionate technologist, architect, and problem-solver who has gone all-in on AI-augmented development. With a deep focus on scalability, performance, and system architecture, I build and orchestrate agentic workflows that multiply engineering output — combining agents, custom skills, MCP servers, and CLI tools to push the boundaries of what a team can ship.

This is my space to share my experience, projects, and thoughts on AI-driven engineering and the ever-evolving tech landscape. Welcome!

AI Workflow & Tooling

I run a multi-agent development workflow daily. At the core is CMUX to manage my different shells with coding agents running combined with a custom RALPH loop built with Bun that orchestrates work across Claude Code, Codex, and Gemini CLI simultaneously.

  • Custom Skills — I author agent skills like a PRD skill that generates structured PRD.json files for automated implementation planning.
  • MCP Servers & CLI Tools — I build MCP servers to extend agent capabilities and CLI tools to streamline agentic workflows and developer experience.
  • Plugins — Custom notification plugins that alert me when agents need attention, complete tasks, or hit blockers.
  • Git Worktree Integration — Agents work in isolated Git worktrees, enabling parallel development without branch conflicts.

This setup lets me operate as an AI-augmented engineering team — shipping faster, with higher quality, and across more fronts than traditional workflows allow.

Latest publications

  • The article is a practical guide on how to build a Service API (also described as an integration or middleware/service layer) using Crystallize (a headless commerce and PIM-type tool) with modern JavaScript/TypeScript tooling… and, if I'm being honest, it is the one that is long overdue.

  • Server-side Rendering, Static Site Generation, Client-side Rendering. CSR with Prerendering, Progressive Hydration, Partial Pre rendering, etc. The differences, trade-offs, and similarities between most common web rendering solutions and why you should care about them as a developer.

  • Explore the Crystallize's Subscription API, how it works, and its benefits and differences from some competitors.

  • Dive into the intricacies of authentication vs. authorization and learn how these security measures work in tandem to safeguard systems.

Latest talks & livestreams

Missive.js
Missive.js

The Service Bus that you needed Fully-typed Service Bus for Node.js fueled by fancy Middlewares, Envelopes and Stamps.

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Cliffhanger
CLIffhanger

A CLI that runs your scripts and exposes them as tools through a built-in, extensible MCP server.

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Badges!

We all want to show off our achievements, right? Here are some badges I earned over the years.