The Death of Writing Code: OpenAI's Engineer on the Rise of Harness Engineering

About this episode

Arnaud Fournier discusses the shift from traditional coding to harness engineering in AI-driven software development.

Coding Chats Episode 77 — Arnaud Fournier, Forward Deployed Engineer at OpenAI, talks to John Crickett about how AI is fundamentally reshaping software engineering. He explores how OpenAI's own engineers have largely moved away from writing code line-by-line, shifting instead to what he calls "harness engineering" — orchestrating agents, preparing context, and steering AI to do the heavy lifting. The conversation covers practical ground for engineers at every level: how to successfully adopt agentic coding in your workflow, best practices for integrating tools like Codex into enterprise environments, and what it's really like to work at the frontier of AI deployment across industries like semiconductors, life sciences, and finance. Chapters 00:00 Understanding the Role of Forward Deployed Engineers 03:21 The Integration Process: Challenges and Solutions 06:25 Optimizing AI Solutions with Codex 09:38 Leveraging Codex for Team Efficiency 12:28 Best Practices for Using Codex in Engineering Workflows 15:29 Setting Up for Success in Enterprise AI Projects 18:26 Navigating Stakeholder Engagement and Requirements 21:16 The Future of AI in Enterprise Solutions 25:53 Building…

People in this episode

Host: John Crickett

Guest: Arnaud Fournier

Topics covered

• AI in software engineering
• harness engineering
• agentic coding
• Codex integration
• enterprise AI projects
• future of AI

Keywords

• AI
• software engineering
• harness engineering
• Codex
• enterprise AI
• agentic coding
• OpenAI

Mentioned in this episode

Organizations: OpenAI, Codex

Places: semiconductors, life sciences, finance

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