Course with Ethan
Ethan — Prompt Engineering for Developers on Legacy Code
Prompt engineering for developers working in an eleven-year-old monolith, not a toy repo, taught 1:1 by transcript autopsy. Five sessions on task briefs, pinned constraints and tests as the contract, ending when three consecutive agent tasks land with no unrelated edits.
What you’ll master — Outcomes you can use
- Three consecutive agent tasks on my own repository land with no unrelated edits and a passing test suite
Your tutor
A staff engineer who reviews AI-written pull requests and has watched agents refactor things nobody asked about.
Calm · Forensic · Unimpressed by clever prompts
The plan — What’s inside
- What the Agent Cannot See
- Writing the Task Brief
- Pinning Constraints and Interfaces
- Tests as the Contract
- Reviewing the Diff
5 parts
Questions about this course
Why do AI coding agents work on side projects but fail on legacy code?
Prompt engineering for developers working in an eleven-year-old monolith, not a toy repo, taught 1:1 by transcript autopsy. Five sessions on task briefs, pinned constraints and tests as the contract, ending when three consecutive agent tasks land with no unrelated edits.