Originally posted on Linkedin on Aug 27, 2025
Since many people have asked me lately what my Agentic Coding setup looks like, here it is.
💼 My Work/Time division:
70%: R&D of AI-powered tools for commercial business
20%: Engineering of state-of-the-art transformer-based neural networks on all kinds of data and scientific projects
10%: Research and reproduction of ML papers (wish it was more with the paper onslaught nowadays)
Hence I mainly use AI tools to build... more AI tools 😏
🤖 LLM Service Providers:
Claude Max plan 20x Pro (€180/mo) - Includes regular Claude with Projects + virtually unlimited Claude Code
OpenAI Plus (€20/mo) - Includes codex-cli, their coding agent similar to Claude Code
👨💻 Editor:
VS Code - Heavy with extensions, but Claude Code integration with Diffs works well
Command-line - just using claude [task] works great, cli works everywhere
🔀 Setup:
Claude Web App: Set up Projects with documentation, voice transcripts, and rules. I develop ideas here, using web search to validate claims. For larger/research projects, I cross-pollinate ideas between Claude, OpenAI, and Gemini, adding my feedback on-the-fly.
Claude Code: The actual coding workhorse - still unbeatable among coding agentsCodex-cli: Code reviews using GPT-5-Thinking (Plus plan suffices since reviewing is less consumptive)
🛠️ Project Structure:
─ CLAUDE.md - Project introduction and rules (Codex reads this too)
─ planning/
── tickets/ - JIRA-style tickets with requirements, definition of done
── reports/ - Implementation details after modifications by Claude Code
── review/ - Codex reviews with filenames, code samples, specific issues
🚀 Actual Flow:
1) Ticket Generation - Claude creates scoped, minimal JIRA-style tickets based on Project definition and my input
2) Development - Claude Code: branch → code → commit → PR (supervised by me)
3) Code Review - Codex reviews, supervised by me
4) Amendments - Claude fixes issues based on review, generates change report
5) Re-review by Codex - If critical issues remain, repeat 4-5
6) Final Review - Critical review by Claude Code + my input
7) Merge - Back to step 1
I do not automate the flow completely - I read the generated code and can steer it in another direction if i do not like it. I seldom let Claude auto-accept changes.
So basically I run two terminals side-by-side in VS Code, 1 for Claude, 1 for Codex, and let them code and review turn-by-turn.
With new goodies and tools arriving every month, this workflow will definitely evolve. But I'm quite happy with the current setup - having both Claude and GPT-5 bicker and refine code is quite assuring to see.