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Jonathan Gelin

Build on Foundations,
Scale with AI.

I design AI-powered workflows and engineering foundations that make teams faster, happier, and more consistent.

Claude Code Plugins Nx Ecosystem
Get in Touch View Resume
Outcome
Developer Experience
Specify Develop Validate Maintain
Enabler
AI Orchestration
AI Framework Contextual AI Tooling Multi-AI
Architecture
Engineering Foundations
Build System Quality CI/CD Release

« Jonathan joined us on a short six-month contract to help plug a gap in our team and tidy up some internal build tooling. Very quickly, it became clear he was having a much bigger impact, and he ended up staying with us for a year. During that time, he reshaped how we think about and work with our tooling from the ground up. »

Jose Badeau Jose Badeau · Head of Technical Excellence at Caseware

« I have had the pleasure to work with Jonathan for around a year, and I can only recommend him for any software development team. »

Miguel Perez Sanchis Miguel Perez Sanchis · Software Engineer at Julius Baer

« I had the pleasure of working alongside Jonathan during his time with our team, where he made an invaluable impact as an expert in Nx and Typescript. Jonathan immediately set himself apart by designing a clear and actionable path from our current state to the ideal state of monorepo management. His strategic vision, combined with his ability to communicate complex technical concepts in an understandable way, was a key driver in our team's success. »

Ekaterina Zaytseva Ekaterina Zaytseva · Dev Success @ Caseware

« I've had the privilege of collaborating with Jonathan for over two years at our organization, and I am thoroughly impressed by what he was able to achieve as a freelance Frontend Architect. Jonathan was entrusted with the challenge of leading our teams through the migration of a substantial legacy frontend codebase to a modern, state-of-the-art monorepo, employing a micro-frontend architecture utilizing Angular and Nx. This transition was monumental. »

Karel Frederix Karel Frederix · Senior Software Engineer at Marigold

« Working with Jonathan for some years now. He has proven to be a skilled architect, always aiming for solid, clean and maintainable solutions. »

Maarten Cardinaels Maarten Cardinaels · Tech lead at AvioBook

« Jonathan was the architect when we migrated from AngularJS to Angular. »

Ben Beckers Ben Beckers · Software Engineer bij Selligent Marketing Cloud

« Jonathan is an extremely skilled front-end architect with the right mix of knowledge, patience and network to weigh in with authority. Apart from that, he sports a can-do mentality and manages to raise the quality bar across an Engineering department. Sound boarding with him does not get boring: never condescending, always enlightening. »

Igor Kalders Igor Kalders · Engineering Manager at Marigold
Architecture

Engineering Foundations

Strong conventions and architecture are required to scale teams and enable AI tooling

Build System

Nx-powered · Monorepo · Polyrepo · Plugin Base · Polyglot

Quality

Sync Generators · Conformance · Auto Fixes · Consistent

CI/CD

Generated · Polyglot · Remote Cache · Distributed

Release

Unified · Changelog · Tech-aware · Single Version

Enabler

AI Orchestration

Intelligent tooling that respects your conventions

AI Framework

Agents · Skills · MCPs · Commands · Hooks

Contextual

Project Graph · Conventions · Architecture · Design System

AI Tooling

Claude Code · Editors · Nx Cloud · MCPs

Multi-AI

Claude · Codex · Gemini · Goose · Llama

Outcome

Developer Experience

Concrete outcomes when foundations and AI work together

Specify

Requirements · ADRs · Stories · API Contracts

Develop

Code Gen · Tests · Refactor · Patterns

Validate

CI/CD · Reviews · Conformance · Auto-Fix

Maintain

Support · Docs · Upgrades · Migration

Content

Articles

Sharing knowledge on Nx, AI tooling, and developer experience

📦 Skill is the new package format for AI ARTICLE

📦 Skill is the new package format for AI

How reusable, markdown-based instructions are becoming the npm of AI agent development

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You Don’t Need NVM, SDKMAN, Pyenv, Rustup, Homebrew or even Nix. Try Mise Instead. ARTICLE

You Don’t Need NVM, SDKMAN, Pyenv, Rustup, Homebrew or even Nix. Try Mise Instead.

Mise can manage all your development environments across multiple technologies

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🏘️ Poly Monorepos with Nx ARTICLE

🏘️ Poly Monorepos with Nx

Poly or Mono Repos? The best of the two worlds!

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🍒 Cherry-Picked Nx v19.4 Updates ARTICLE

🍒 Cherry-Picked Nx v19.4 Updates

Exploring My Selected Features from Nx Releases

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🍒 Cherry-Picked Nx v19.2 Updates ARTICLE

🍒 Cherry-Picked Nx v19.2 Updates

Exploring My Selected Features from Nx Releases

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👥 Reproducible Nx Workspace with HugeNx’s Conventions ARTICLE

👥 Reproducible Nx Workspace with HugeNx’s Conventions

An Opinionated Approach to Maintaining and Scaling HugeNx Monorepos

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🩹 Nx Crystal Plugin Picking the Essentials ARTICLE

🩹 Nx Crystal Plugin Picking the Essentials

Exploring Workarounds and Custom Solutions for Early Days of Nx 18

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⛔ Target Exclusions in Nx Project Crystal ARTICLE

⛔ Target Exclusions in Nx Project Crystal

Exploring Workarounds and Custom Solutions for Excluding Targets in the Early Days of Nx 18

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🦞 Start Your OpenClaw Monorepo — Your AI Assistant Needs One ARTICLE

🦞 Start Your OpenClaw Monorepo — Your AI Assistant Needs One

A personal take on applying monorepo principles to an AI-powered life workspace

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💡 10 Tips for Successful Nx Plugin Architecture ARTICLE

💡 10 Tips for Successful Nx Plugin Architecture

Insights from Using Nx Plugin Architecture in Monorepos

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🍒 Cherry-Picked Nx v19.6 Updates ARTICLE

🍒 Cherry-Picked Nx v19.6 Updates

Exploring My Selected Features from Nx Releases

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🔎 Deep Dive into Nx Affected ARTICLE

🔎 Deep Dive into Nx Affected

Understanding and Optimizing Nx Affected in Monorepos

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🍒 Cherry-Picked Nx v19 Updates ARTICLE

🍒 Cherry-Picked Nx v19 Updates

Exploring My Selected Features from Nx Releases

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🍒 Cherry-Picked Nx v18.3 Updates ARTICLE

🍒 Cherry-Picked Nx v18.3 Updates

Exploring My Selected Features from Nx Releases

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🍒 Cherry-Picked Nx v18.1 Updates ARTICLE

🍒 Cherry-Picked Nx v18.1 Updates

Exploring My Selected Features from Nx Releases

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⏰ It’s time to talk about Import Map, Micro Frontend, and Nx Monorepo ARTICLE

⏰ It’s time to talk about Import Map, Micro Frontend, and Nx Monorepo

How leveraging native import map overrides can significantly benefit your micro frontend architecture

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🤖 AI-Powered SDLC: Building an AI Framework for Developer Experience ARTICLE

🤖 AI-Powered SDLC: Building an AI Framework for Developer Experience

A practical guide to integrating AI across your Software Development Lifecycle

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Hashnode Loader with Astro 5 NOTE

Hashnode Loader with Astro 5

Create Custom Loader for new Astro Content Collection

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🍒 Cherry-Picked Nx v19.5 Updates ARTICLE

🍒 Cherry-Picked Nx v19.5 Updates

Exploring My Selected Features from Nx Releases

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🍒 Cherry-Picked Nx v19.3 Updates ARTICLE

🍒 Cherry-Picked Nx v19.3 Updates

Exploring My Selected Features from Nx Releases

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🍒 Cherry-Picked Nx v19.1 Updates ARTICLE

🍒 Cherry-Picked Nx v19.1 Updates

Exploring My Selected Features from Nx Releases

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🍒 Cherry-Picked Nx v18.2 Updates ARTICLE

🍒 Cherry-Picked Nx v18.2 Updates

Exploring My Selected Features from Nx Releases

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📤 Local Library Development with Nx Release and Verdaccio ARTICLE

📤 Local Library Development with Nx Release and Verdaccio

Automating Your Workflow with Custom Scripts and Verdaccio in Nx Environments

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💎 Discovering Nx Project Crystal’s Magic ARTICLE

💎 Discovering Nx Project Crystal’s Magic

Navigating the Evolution of Nx Configuration Towards Effortless Development

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