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The Copenhagen PHP Meetup: AI Coding Night - Claude vs Codex Live Refactoring
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🚀 AI Coding Night
Claude vs Codex
Live Refactoring Kata
📅 Wednesday, August 5
🕘 21:00 CET
⏱ Duration: 2 Hours
Build. Refactor. Learn. Together.
Forget AI presentations.
Join The Copenhagen PHP Meetup Group for a hands-on coding workshop where developers collaborate in teams, tackle a real refactoring challenge, and learn from each other's ideas, code, and AI workflows.
Choose your side:
🤖 Team Claude
or
⚡ Team Codex
Both teams receive exactly the same legacy code and the same refactoring challenge.
The goal isn't to prove one AI is better.
The goal is to discover different approaches, improve your engineering skills, and learn from both your own team and the other team.
Workshop Format
👋 Introduction (15 Minutes)
Welcome & Team Selection
Introduction to the Refactoring Kata
Understand the Legacy Code
Workshop Rules
🔄 Coding Iterations
Each iteration follows the same format:
💻 20 Minutes
Work together in breakout rooms.
Refactor the code in small, safe iterations using your AI coding assistant as your pair programmer.
Collaborate with your teammates, discuss ideas, and continuously improve your solution.
💬 5 Minutes
Everyone comes back together.
Each team presents their progress.
We'll compare different approaches, prompts, refactoring strategies, and engineering decisions.
This is where everyone learns from each other.
We'll complete three iterations during the evening.
If everyone is having fun and wants to continue, we'll simply keep going with Iteration 4 and 5.
This Is a Collaborative Workshop
This is not a competition.
It's a collaborative engineering exercise where every participant contributes ideas and learns from others.
You'll learn:
Different refactoring techniques
AI Pair Programming
Better prompting for software development
Clean Code practices
Different engineering approaches
How other developers solve the same challenge
Through discussion, feedback, and collaboration
The comparison after every iteration is just as valuable as the coding itself.
Requirements
To get the most out of this workshop, you should:
💻 Be able to read and write code in PHP or JavaScript
🤖 Have basic experience using AI coding assistants
⚙️ Have Claude Code or Codex installed and ready to use
🌿 Be familiar with basic Git/GitHub workflows
🧠 Enjoy solving coding challenges and refactoring existing code
🤝 Be willing to collaborate, share ideas, and help others learn
❤️ Have fun experimenting and improving together
What to Bring
💻 Your laptop
🛠️ Your favorite code editor
🤖 Claude Code or Codex
🌿 GitHub account
🚀 Curiosity and a collaborative mindset
Live on YouTube
The workshop will be recorded and streamed live on @skillsforteams.
Highlights and key learnings will also be available afterwards on the YouTube channel, so the community can continue learning from the different approaches.
And most importantly—have fun writing better software. 🚀
Meet Your Host
John Behrens
Agile & QA Coach · AI Enablement
I've spent more than 25 years building software and helping teams improve the way they develop it—as a developer, QA engineer, Scrum Master, Agile Coach, and trainer. Today my focus is on AI Enablement, bringing practical AI into everyday software engineering.
Why I'm Hosting This
I'm running this workshop for free because I genuinely love these kinds of coding exercises.
It reminds me of the old Software Craftsmanship meetups: developers coding together, exchanging ideas, and learning from each other. This isn't another AI presentation—it's a real community workshop, just the AI way.
If you'd like to work with me professionally, I'm currently open to technical roles in Agile, QA, and AI Enablement.
LinkedIn: https://www.linkedin.com/in/john-behrens-sft/
YouTube (@skillsforteams): https://www.youtube.com/@skillsforteams
