Quality engineering for AI-generated code
AI Is Writing More of Your Code Every Sprint. Someone Still Has To Prove It Works.
Your assistants ship more change every sprint than your test capacity was built for. Modenix verifies the change independently of every model that touched it, and every engagement ends in evidence, not an opinion you have to trust.
The flagship service
Merge Assurance
Independent verification of AI-generated code, at the merge gate, before it reaches your main branch.
Your Coverage Went Up. Your Trust Went Down.
When the same assistant writes the implementation and the tests, the tests inherit the implementation's misunderstanding. Both are wrong in the same direction, the suite goes green, and the coverage number climbs while trust falls.
That is circular validation, and no AI code reviewer fixes it. Breaking it requires a verifier that is genuinely independent of the thing that wrote the code and knows what to look for. Ours runs on our own platform, built on thousands of test patterns our engineers identified over 25 years.
* JetBrains State of Developer Ecosystem · Stack Overflow Developer Survey
Why an AI code reviewer does not fix this
The loop on the left is why coverage and trust stopped moving together.
Start here, because most vendors won't
We Report Into Your Dashboard, on Your Metrics.
Your board wants numbers, not testimonials. So our engineers' output lands in the view you already use, beside your own business-unit averages: issues closed, PRs merged, rework rate, escaped defects.
If one of our people sits below your bar, you see it before we say it. Then you get the improvement trend or the replacement. It is an uncomfortable way to sell. Almost nobody does it.
The practice underneath it
Pick the Sentence That Sounds Like Your Week.
Merge Assurance rests on three practices. Quality engineering is all we do. What changes is which problem you have first.
“We’re Shipping AI Features and Can’t Grade Them.”
An agent has no deterministic pass. Risk, legal, or your board is asking how you know it behaves, and there is no answer on file.
“We’re Shipping Faster Than We Can Test.”
Change volume outran the suite. Automation breaks faster than it gets fixed, and coverage numbers stopped predicting production.
“Our Quality Function Doesn’t Hold at This Size.”
Multiple products, environments, and release trains. Testing is inconsistent across teams, and nobody owns the whole picture.
What actually changed
The Bottleneck Moved. Most QA Vendors Are Still Selling to the Old One.
For as long as the industry has existed, the constraint on shipping software has been writing it. That constraint is gone. What's left is the harder half: knowing whether what's shipped is correct, safe, and within bounds.
Almost every testing firm still prices and staffs based on the old constraint: bodies per test case. We reorganized around the new one, which is why our unit of sale is a verified change rather than hours.
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Then
Writing code was slow, so you bought people to write and check more of it.
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Now
Code is cheap and abundant. Confidence is scarce and expensive.
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Consequence
Verification is the constraint on release velocity, and it is under-resourced almost everywhere.
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What we sell
Evidence, produced by named engineers who are measured on your own dashboard.
The Automated Check and the Human Disagree by 24 Points.
Share of AI-written PRs judged mergeable →
Source: METR, 296 AI-written PRs, blinded maintainer review.
Results
What Closing the Gap Produced.
Healthcare client, mid-migration, with manual testing effort down 75%.
Global tire manufacturer. AI-augmented regression replacing a manual cycle.
No added headcount. The gain came from where verification effort was spent.
Three ways in
Start Small. Nothing Here Requires a Program.
Verification Gap Diagnostic
Seven questions, two minutes. A scored read on where your gap is widest, an estimate of your unverified merge ratio, and what to fix first, on screen before we ask who you are.
Three-week Readiness Assessment
We measure change volume against verified change, find where coverage claims and production reality diverge, and hand you a costed 60–90 day plan you can take to a board.
Thirty Minutes With a QA Lead
An engineering lead is in the room, not just a salesperson. Bring the number you have to hit, and we will tell you whether it is reachable, including when it is not.