George Millo on Agentic Coding
From Elixir Mentor by Jacob Luetzow
March 22, 2026 · 1h 31m · Season 1 · Episode 78
About this episode
George Millo discusses the impact of LLM-driven development and agentic coding on software engineering.
George Millo — creator of Learn Phoenix Live View and alumnus of the Gauntlet AI fellowship — joins me to talk through what really changes when you commit to LLM-driven development. George went through Gauntlet's intensive 10-week program built around LLM maximalism, came out the other side rethinking how he builds software, and has spent the past year working on an AI-first engineering team applying those lessons in production. We spend a lot of time on the practical realities of agentic coding: verification debt (the gap that grows between your mental model and what the AI actually built), the importance of planning before prompting, why George works in small self-contained PRs, and how he uses Codex and Claude Code in parallel tabs without losing track of what's happening. We also get into the debate around vibe coding, spec-driven development, testing pitfalls, and why deep technical knowledge matters more now — not less — when AI is writing most of the code. The conversation covers where Elixir fits in an AI-first world: the BEAM's process model as a natural fit for agent architectures, Phoenix shipping with an agent.md file, Tidewave's approach to closing the feedback loop…
People in this episode
Host: Jacob Luetzow
Guest: George Millo
Topics covered
- agentic coding
- LLM-driven development
- AI-first engineering
- software development
- Elixir
- security risks
- verification debt
Keywords
- LLM
- agentic coding
- verification debt
- AI-assisted development
- Elixir
- Phoenix
- software engineering
- security risks
- Codex
- Claude Code
Mentioned in this episode
Organizations: Learn Phoenix Live View, Gauntlet AI, Codex, Claude Code, Tidewave, JavaScript, OpenClaw
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