Johan Ledoux

Fullstack Product Engineer

I design and build software products, developer tools and the infrastructure behind them.

GitHub LinkedIn

Currently

Fullstack Product Engineer

Syracuse Technology

2026—now

Building and evolving software products across application architecture, backend systems, infrastructure and delivery.

Mastère Ingénierie Web & Architecture Logicielle

ESGI Paris

2023—now

Software architecture, web engineering and modern application infrastructure.

Co-founder

2025—now

Rootage

Co-building a digital engineering studio helping organizations design, automate and operate custom software and infrastructure.

rootage.fr

Open source

unschema-graph

Type-safe utilities for building and managing Schema.org JSON-LD graphs in Astro.

maintained

Designed to make structured data easier to compose, reuse and maintain across modern static websites.

TypeScript
Astro
Schema.org
JSON-LD

★ 3npm v0.10.0

Documentation GitHub npm

Notes

View all notes

Technical notes, development logs and experiments around software engineering, web architecture, infrastructure and open source.

Oct 3, 2026 en

Why I built unschema-graph

Why I wanted a simpler, typed way to build maintainable Schema.org JSON-LD graphs in Astro.

devlog unschema-graph json-ld schema.org

Previously

Jaiio

2023—2026

Built product, data and infrastructure across a second-hand fashion platform.

Worked across application development, internal tooling, automation, cloud infrastructure, analytics and operational systems.