- Introduction
- 1. The junior's edge
- 2. Teach the agent your world
- 3. The second brain
- 4. Memory that survives the session
- 5. Automation that sticks
- 6. More than one agent
- 7. The team hive-mind
- 8. Guardrails
- 9. A week in the life
- 10. Growing, not outsourcing
- Appendices
The Agentic Junior
This book is 100% completeLast updated on 2026-08-12
They say AI is coming for junior developers first. This is a junior's honest case for the opposite: how driving agents well, on real legacy code, makes you level up faster instead of getting left behind. The failures are left in.
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About the Book
Almost everything written about AI and coding comes from senior engineers or founders. This is written from the other seat: a junior developer maintaining legacy code by day and running coding agents every working day.
No hype, and no "just prompt harder." It's the actual system I use: an instruction file the agent reads before every session, a plain-text second brain it keeps current, durable memory, hooks, multi-agent audits, and the guardrails that stop it doing something you can't undo. The failures are left in, including the agent that confidently got its own arithmetic wrong and the chart it rendered 131,000 pixels wide.
If you're early in your career and the AI conversation makes you nervous about where you fit, this argues the opposite case and shows the working.
Written from the junior's side, with everything drawn from real practice.
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About the Author
Kevin Demeulenaere
Junior developer, still leveling up. I maintain legacy .NET, build some Vue, and run coding agents on real work every day. I write about what I learn as I learn it, with the failures left in. The Agentic Junior is my first book, written from the junior's side because almost everything else about agentic development comes from seniors and founders.
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