Technical debt in the vibe-coding era
Coding agents produce code at a new speed. Technical debt too.
In 2026 there are teams shipping three times more code than two years ago with the same headcount. Coding agents have become a real multiplier of delivery capacity. And with that multiplier came a side effect that many technical leads are starting to see reflected in maintenance cost.
When writing code stops being the bottleneck, understanding, reviewing and maintaining what has already been written becomes one. It is a subtle shift, but it flips the team’s priorities top to bottom.
The symptoms we are seeing
- Features that ship in a week and need two more to stabilize.
- Duplicated logic that nobody notices until a bug shows up in an unexpected place.
- Generated tests that pass but do not cover what matters.
- Documentation that does not match the code because it was generated at the start of the sprint and never updated at the end.
None of these are exclusive to the AI era. All of them accelerate when the volume of code grows faster than review capacity.
What is working
- Architecture before the sprint. Ten minutes of structural decision save a week of refactor.
- Human review on decisions, not on lines. Reviews shift from “is this code well written?” to “does this change belong here?”.
- Boundaries for the agent. Defined contexts, required tests, and branches that do not merge without human judgment.
- Periodic audits. Every two or three months someone looks at code growth and decides what stays and what goes.
How we approach it
We work with teams seeing these symptoms for the first time. We audit the current state, identify where debt is accumulating fastest, and propose a realistic cleanup plan.
Generation speed is a competitive advantage. Whether it holds over time depends on how the code left behind is managed.