Back to blog
AISoftware ArchitectureIndie HackingVideo

AI Software Factory with Codex: Plan, Code, Test - Indie Hacking Blog #4

October 22, 2026
•
39 minutes video
Watch on YouTube ↗

Video description

I'm building an AI software factory with Codex to automate planning, coding, and testing. This architecture walkthrough and prototype demo covers a custom workflow engine and a previous run that built a small Rust job queue.

The AI coding agents run a brainstorm, implement, test workflow. I explain the control plane, engine, and worker; YAML process definitions; PostgreSQL state; retries and timeouts; and how structured outputs pass context between steps.

This is an early prototype. The current coding-agent integration uses Codex and a local working directory. The example run needed fixes and restarts while I was developing the engine, and the generated code still needs human review.

I also explain where I want to take it next: changes to a system design document triggering implementation updates and a pull request for an engineer to review. That document-to-PR workflow is the roadmap, not something the prototype does today.

Timestamps: 00:00 What is an AI software factory? 05:56 Modeling development as a workflow 09:00 Architecture and process data models 19:41 Prototype demo: YAML and Codex workflow 28:57 Previous execution and Rust job queue 33:19 Roadmap and why human review matters

Which part of your development workflow would you automate first, and where would you keep a human review step?

#AIEngineering #Codex #SoftwareArchitecture

Source code

View the AI Development Orchestrator repository on GitHub

Watch on YouTube

Watch AI Software Factory with Codex: Plan, Code, Test - Indie Hacking Blog #4 on YouTube

šŸ“§ Stay Updated

Get weekly insights on backend development, architecture patterns, and startup building directly in your inbox.

Free • No spam • Unsubscribe anytime

Share this article

Vitalii Honchar portrait

Meet Vitalii Honchar

Senior Software Engineer specializing in high-load systems, AI/ML infrastructure, and cloud-native architectures. With experience at companies like Pinterest, Revolut, Form3, and Ajax Systems, I focus on building scalable, efficient, and robust systems that solve complex technical challenges.

More About Vitalii →
AI Software Factory with Codex: Plan, Code, Test - Indie Hacking Blog #4 | Vitalii Honchar's Blog