Julien Ripouteau

Freelance developer · France

I build products. And developer tools.

AdonisJS core team. Currently building Monocle, observability built on OpenTelemetry.

Freelancing for almost 10 years, for companies of all sizes: backends, developer tools, dashboards, mobile apps, some devops, and plenty of experiments just for fun.

Open source nerd. Hype-driven, but trying to stay pragmatic.

01Currently building

monocle.sh ↗

Monocle · Observability built on OpenTelemetry↗

What: Traces, logs, errors, metrics, uptime, dashboards. All correlated.
For: Any stack that speaks OpenTelemetry, first-class Node.js & AdonisJS
Status: Early access, launched Apr 2026

02Open source

all projects ↗

AdonisJS

A fully featured web framework for Node.js

adonisjs/core★ 19.2K

Sesame

Turn your AdonisJS application into a full-featured OAuth 2.1 authorization server.

Julien-R44/sesame★ 4

Facteur

One notification, multiple delivery channels. TypeScript-first notification library for Node.js, with in-app notification center.

Julien-R44/facteur★ 4

BentoCache

Bentocache is a robust multi-tier caching solution for Node.js applications

julien-r44/bentocache★ 665

Tuyau

E2E typesafe client for AdonisJS

Julien-R44/tuyau★ 214

Hot Hook

Simple Hot Module Reloading (HMR) for Node.js + ESM

julien-r44/hot-hook★ 233

03Writing

rss ↗

Notes on things I build and break.

Sometimes I share cool stuff. Sometimes not so much.

All posts ↗

What's new in Monocle: frontend support, issues, alerts, and a whole new look↗

Multi-service projects and traces, a browser SDK, automatic issues, endpoint alerts, deployments, a reworked Uptime, and a redesign of almost every page. Everything that shipped since June.

Oct 12, 2026

Introducing Monocle↗

Observability in 2026 is kind of a nightmare. So I built the thing I actually wanted: an observability platform for Node.js that works out of the box.

Apr 13, 2026

Introducing @adonisjs/otel - OpenTelemetry integration for AdonisJS↗

Introducing @adonisjs/otel, a package that brings OpenTelemetry to AdonisJS with zero-config setup and sensible defaults.

Dec 20, 2025

Stop copy-pasting! Use Typescript Mixins with Lucid Models↗

Leverage Typescript Mixins with your Lucid models to avoid repetitive code and share behaviors across your models.

Jun 26, 2025

04Experiments

all experiments ↗

Toy aisles with cages full of playground balls

Experiment #01 · After Hours↗

What: Wander through an empty 90s toy store, long after closing time. PSX-style.
Tags: Three.js · Interactive
Date: Oct 2026

A colorful voxel pattern drawn with a few lines of code

Experiment #02 · Voxshade↗

What: Create 3D voxel art in your browser using JavaScript. Write code, explore patterns, and share creations with the community.
Tags: Three.js · Interactive
Date: Jun 2025

Have a project in mind?

open to freelance · replies within a day · --:--

Hire me ↗