Your CTO, developer or agency has left
The person who owned the system is gone, the handover was incomplete or never happened, and whoever is left does not know how it builds, how it deploys, or where the data lives.
Software takeover & rescue · Regain control → confirm maintainability → takeover plan
Your developer left and the original team is gone? First take the system back safely
"Our engineering team left — can you just take it over?" We can assess it. But the first step of a takeover is not to start changing code. It is to confirm whether you can truly regain control of the system, whether the system can be safely maintained, and only then decide whether to take over directly, refactor in parts, replace gradually, or rebuild.
When this applies
If you are in any of these situations, this page is written for you.
What these situations have in common is not "we haven't started building" — it's "there is already a running system, but the person responsible for it is gone." The real fear here is not missing features; it's that nobody dares to touch it and nobody knows whether a change will break something.
Production still runs, but nobody dares to change it
The system serves customers every day, but there are no tests, no deployment process and no way to roll back — changing a single line feels like it could bring the whole thing down.
No documentation — only source code or a cloud login
All you have might be one repo, one cloud login, or a few accounts left by an agency — with no architecture diagram, deployment notes or dependency list.
An AI / vibe-coded prototype is already in production
Something built quickly with ChatGPT, Cursor, Lovable or vibe coding is already serving real users, but nobody can maintain it and no one is sure it is safe.
Free quick self-check · no source code or credentials required
Take 2 minutes: can this system be safely taken over right now?
Answer the 6 questions below. Using the same "regain control → confirm maintainability" logic, this tool estimates your current takeover risk and suggests a more sensible direction — take over directly, refactor in parts, replace gradually, or (only when necessary) rebuild. Everything is computed in your browser: nothing is uploaded, nothing is stored, and you do not have to hand over any account or source code first.
This is a self-assessment, not a formal audit or guarantee; a real takeover still requires an actual inventory of control and maintainability.
This assessment is computed instantly from your answers and is for initial guidance only; the real takeover is based on an on-site inventory. We do not quote a fixed price before an inventory, and we do not assume every system must be rewritten.
Takeover process
The takeover has three stages — each is confirmed before moving on.
We do not promise "we'll take all of it" up front. A takeover has an order: first confirm you can regain control, then confirm the system can be safely maintained, and only then propose a takeover plan based on the results. If any stage is blocked, we tell you honestly where the risk is.
Stage 01
Regain control (Access & Ownership)
Inventory and confirm whether you truly hold: the code repo, domain, DNS, cloud accounts, database, environment variables and secrets, third-party APIs, payments, email, monitoring and backups, and CI/CD. When control is incomplete, we first help you recover the permissions you should hold — this is the prerequisite for everything that follows.
Stage 02
Confirm it can be safely maintained (Maintainability)
Verify whether the system can be safely built, tested, deployed, rolled back, migrated and restored from backup, and whether access and responsibility are clear. The goal of this step is to surface the real risk of "will a change break something" — not to rush into adding features.
Stage 03
Takeover plan (Takeover Plan)
Based on the first two stages, we propose a takeover path you can discuss: take over and maintain, partial refactor, gradual replacement, or rebuild only when necessary. We do not assume every system must be rewritten — what can be safely maintained is maintained, what should be rebuilt is rebuilt, and the trade-offs are spelled out for you to decide.
What you get
A takeover is not a verbal promise — it's a set of documents you keep and can understand.
After the takeover you hold a set of reusable assets, so that no matter who maintains the system next, there is a reliable baseline to follow — no more "only one person knows how it works." The exact deliverables are adjusted to the system's condition and scope.
- System Architecture MapHow services, modules and data flow connect together.
- Access MapWhich accounts, permissions and keys control which resources.
- Dependency MapThird-party packages, APIs and service dependencies.
- Risk RegisterKnown risks, their impact and a suggested order to address them.
- Deployment RunbookHow to build, deploy, roll back and handle common situations.
- Backup-Recovery PlanHow data is backed up and whether it can actually be restored.
- 30-60-90 Day PlanA 30/60/90-day plan after takeover: what to stabilize first, what to change next.
Takeover options
Four possible directions — we do not assume every one needs a rewrite.
"Should we redo it?" is the most common — and most casually mis-advised — question in a takeover. A rewrite sounds decisive, but it is often the most expensive and highest-risk path. We recommend the most sensible direction based on the real results of the control and maintainability checks, and we spell out the trade-offs.
Honest boundaries
First, what we do not guarantee.
We do not guarantee every system can be saved
After the control and maintainability checks, some systems genuinely are not worth maintaining. We say so honestly rather than taking it on regardless.
No fixed price before an inventory
Without first confirming control and the system's condition, any quote is only a guess. We check first, then discuss scope and cost.
Rewrite is not the default, and we make no legal/audit conclusions
What can be maintained is not rewritten; legal, audit and compliance judgments still belong to the relevant professionals. We provide a discussable technical basis.
Your situation may be closer to one of these
Not sure whether you need a "takeover" or a "rescue"?
If your problem is not "the team left and nobody can take over" but rather something built halfway, stuck just before go-live, or you just want to figure out where to start, the entry points below may suit you better.
FAQ
FAQ: the scope and boundaries of a takeover, made clear.
Our developers all left. Can you take over our existing system directly?
We can assess it. The first step is not to start changing code, but to confirm whether you can regain control of the repo, domain, DNS, cloud, database, environment variables and accounts, and to check whether the system can be safely built, tested, deployed, rolled back and restored from backup — then decide on a direct takeover or another path based on the results.
There is only source code and no documentation at all. Can it still be taken over?
In most cases yes, but an inventory comes first. We reconstruct the architecture, dependencies and deployment method from the existing source code, cloud configuration and running services, and produce a System Architecture Map, Access Map and Deployment Runbook so future maintenance has a reliable baseline.
Does taking over always mean a full rewrite?
Rewrite is never the default. Based on risk and cost we propose four options — take over and maintain, partial refactor, gradual replacement, or rebuild only when necessary — and explain the trade-offs. A system that can be safely maintained is not rewritten, avoiding unnecessary rebuild cost.
Will you quote a fixed price up front or guarantee the system can be saved?
We do not quote a fixed price before an inventory, and we do not guarantee every system can be saved. We first run a verifiable control and maintainability check, then write the risks and viable paths into a document you can discuss, so you can decide the next step with clear information.
Start by checking your existing system
Let us check your current system first.
Tell us where you stand: has the original team left, what accounts and source code do you hold, is the system still serving users, and what worries you most. We start with a control and maintainability check, then decide the next step — no quote first, no promise to rewrite first.