The System Your Revenue Runs On, Safer to Change
Legacy modernization for companies whose revenue runs on a system that’s become risky to change: the part of the product everyone’s afraid to touch. A senior engineer reads the system first, in a free audit. Then we stabilize, migrate or rebuild it in stages at a fixed price, with a warranty, while your releases keep going out.
- −80% infrastructure cost
- −90% downtime incidents
- No cap on parallel uploads
- A free 30-minute call
- A free audit of the system
- Stabilize, migrate or rebuild, at a fixed price
- 3-month warranty; the code is yours
If This Sounds Familiar
Legacy software rarely fails all at once. It gets more expensive to change with every release, until the roadmap waits on the codebase.
“Modifying one thing takes ages.”
A change that should take days takes weeks, because it reaches into parts of the code nobody has mapped.
“Every release breaks something.”
Every release needs a round of manual testing and some luck.
“We should rewrite it, but we can’t stop shipping.”
The system still earns the revenue, so a long rewrite behind a feature freeze was never an option.
“A customer’s security review is blocking the deal.”
The oldest parts fail it first: an end-of-life stack, no audit trail, access nobody can fully account for.
What People Try, and Where It Breaks
What changed is the cost of doing it properly. For a team with tests and a disciplined release process, AI turns a migration that used to be a multi-year roadmap into months, so the rewrite you shelved is worth pricing again. Without that discipline, the same tools produce the next layer of debt faster.
| What people try | Right when | Where it breaks |
|---|---|---|
| Live with it | The pain is low and nothing on your roadmap needs more from the system. | It turns into drift: every feature adds to the debt, and the fix grows the longer it waits. |
| Point your own team and AI tools at it | The codebase already has tests and a release process that can absorb the speed. | Without them, the gains get absorbed by the codebase: the tooling bill arrives, the delivery speed doesn’t. |
| Hire a senior engineer | For the long run: someone has to own the system after the fix. | As the fix itself: one hire can’t change a system and its process alone, and spends the first months learning code nobody wants to touch. |
| Rewrite it from scratch, all at once | The system is small, or its foundation can’t carry what the business needs next. | On a system that earns revenue, a rewrite behind a feature freeze is the riskiest path: a hard cutover, and no way back if it slips. |
How It Works
We read the system before we recommend anything. A free 30-minute call settles whether an audit makes sense; the audit tells you what you own and what to fix first; the path follows from what it finds. You can stop after any step.
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A 30-minute call
Free, with a senior engineer: what the system does for the business, what it’s blocking, and whether an audit is the right next step. No code access, no preparation.
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The audit
A senior engineer reads your code, infrastructure and delivery process and talks to the people who run it. You get a written report, a prioritized fix sequence and a readout call. The findings point to one of four paths: stabilize the system in place, replace it piece by piece while it runs, rebuild it and switch over, or keep it as it is. We don’t lead with the rewrite, and we don’t rule it out. Free, for now; the report is yours either way.
How we choose between the four → -
The work
We price the chosen path as a fixed-price project: scope, date and budget committed, with the delivery risk on us. Releases keep going out, and changes reach production behind automated tests.
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After release
A 3-month warranty covers bugs. You own the code, infrastructure, accounts and documentation. We can stay on as your ongoing team, or hand over to yours.
What You Walk Away With
Automated tests around the behavior that earns revenue, a release process that doesn’t depend on luck, and fixes done in the order that unblocks the business.
A fixed price and a committed timeline for the chosen path. If something material changes mid-way, it’s your call: extend the budget or move it to the next phase.
Code, infrastructure, accounts and documentation stay yours, with nothing built to depend on us. Keep us on, take it in-house, or give it to another team.
If you have a team, they work on the same codebase as it gets safer to change, and pick up the practices that make AI tools pay off.
What It Looked Like in Practice
Consumer platform, sensitive data
fixed-price rebuildInvestor-promised B2B milestone blocked by the codebase
- fixed-price rebuild 7 months
- of the eventual engagement spend ~1%
Evolve Edits
infrastructure cost · per monthDecade-old portal moving terabytes a month through one on-premise machine
- infrastructure cost · per month $1,700 → $300 −80%
- downtime incidents per quarter 125 → 12 −90%
- every client uploads at full speed, however many at once No cap
Healthcare start-up
regression safety netAging codebase now facing enterprise security reviews and an end-of-life stack
- coverage on core business logic 0 tests → 95%+
- vendor security review failed → cleared
- of medical data, served without interruption 100s GB / month
Who Does the Work
Senior engineers who’ve practiced the same written methodology for over a decade. The engineer who runs your audit stays involved in the work that follows, and you talk to the principals, not a sales team.
Safe to Let Us Into Your Code
- We sign an NDA before any access.
- You grant our access, scope it, read-only where the work allows, and can revoke it at any time.
- Our AI coding tools run only under business terms that exclude training on your code, and only with your approval.
- We carry professional liability and cyber insurance.
- The code, infrastructure and accounts we build or change stay yours.
Questions Buyers Actually Ask
Will you push us toward a rewrite?
The audit, your goals, and your company context decide.
Can this happen without stopping our releases?
That’s the default. We stabilize the system in place, or build the new version beside the old one and move users over gradually. A decade-old platform we modernized that way kept running throughout, and its downtime incidents fell 90%.
How much does it cost?
The call and the audit are free, for now. The modernization is priced off the audit’s findings as a fixed-price project with a 3-month warranty, and nothing obliges you to hire us for it.
Will our team be able to run it after you leave?
That’s the design. The code, infrastructure and documentation are handed over, nothing is built to depend on us, and your engineers can work alongside ours while it happens.
What if the audit says the system is mostly fine?
Then you have a straight answer, and the report still gives you the order to fix what’s there. Some systems need tests and a release process, not a migration.
Start With a 30-Minute Call — about the system your revenue runs on
A 30-minute call with a senior engineer about the system and what it’s blocking, then the honest next step: the audit, approaches to weigh, or “not a fit,” said out loud.
Notes on Building High-Quality Software
A short founder’s note and a digest of what we’ve published, sent only when there’s something worth the inbox.