Skip to content

AI engineering for teamsCapability

Vibe-Coded App? Independent Audit and Hardening of Code AI Already Wrote

I review AI-written code against the behaviour you need, reproduce failures, and quote bounded fixes with regression checks.

For
Founders and CTOs with an AI-built application
Checked

Sounds familiar?

Tick what applies to you

The situation AI engineering for teams
The app looks finished. You cannot yet tell whether it handles real work.

Tick the lines that describe your case.

Describe my task

How I solve it

What I build

I produce an independent verdict on the agreed behaviour, then harden the parts we decide to keep. Each finding has a reproduction, its consequence and a proposed fix. I check the repaired path against a regression case before accepting it.

The process

How it works

5 steps. Scope and a fixed price are agreed before the first one.

  1. Agree the important user journeys and the boundaries of the audit.

  2. Run the app with synthetic accounts and data in an isolated environment.

  3. Check access, validation, persistence, retries and failure handling where they affect those journeys.

  4. Reproduce findings and separate confirmed defects from questions that need more evidence.

  5. Quote the fixes, add regression checks and record the result of each repair.

Handover

What you get

  • A prioritised report with reproducible findings.
  • A record of tested and untested paths.
  • A bounded repair proposal and, if commissioned, verified fixes.

Built with

  • Your existing application
  • an isolated test environment
  • synthetic fixtures
  • regression tests
  • a findings report and an acceptance record
  • I choose tools after reading the code

Proof

Done before, with dates and numbers

Capability Work I do; the proof below is from related projects.

Before → after

The intended change is from a working demo with unclear failure handling to an application whose agreed paths have explicit acceptance evidence. My backing is internal review work, a local harness repair and agent acceptance tooling. It does not establish a delivered independent audit for a client.

  • My own repositories

    review experiments and a local agent-harness fix inform this method. These are internal engineering work, not a delivered client audit.

What you can look at

For this engagement I would provide a synthetic failing journey, the regression check and the verdict for the repaired version. A public sample still needs preparing; no client audit is presented here.

Capability based on internal review and agent tooling. No client delivery or business outcome is claimed. The local harness fix was not accepted upstream.

Price and timeline

What it costs and how it runs

The audit has its own agreed scope, fixed price and delivery date. Hardening is quoted separately as a Custom Engineering Project, from USD 1,500. The Tracking Health Check package is not presented as a general code audit.

QuoteFixed before work starts

Price
Independent code audit: scope and fixed price agreed in writing. Hardening is a Custom Engineering Project from USD 1,500. Discussing the task is free.
Timeline
Audit scope, delivery date and acceptance checks agreed before work starts. Fixes are quoted separately.
First step
Describe the task. I reply within one working day, free, and tell you which option fits — or that you can fix it yourself.
Describe a task like this

A note from Daniilbefore you decide

When you don’t need this

If your team already reproduces defects, reviews changes independently and tests the important failure paths, keep that process. A disposable prototype may only need a clear decision about what is safe to try with synthetic data.

— Daniil

Questions

What people ask about this

Do you rewrite the whole app?

Only if the evidence supports that scope. I start with reproducible failures and a written priority list.

Does a clean audit guarantee security?

No. The verdict covers the agreed scope and records what was checked, what failed and what remains untested.

More like this

All situations
Daniil Maximkin

Hi, I’m Daniil.

I work with you from defining the problem to implementation and handover. You talk to the person who does the work. I work in English and Russian.

My story My work

Have a task like this?

Describe your task

The first answer is free, within one working day. Or write directly: next@taskfordaniel.com