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Many founders build the first version with an agency and plan to hire their own developers once the product proves itself. Whether that transition takes two weeks or six months depends mostly on decisions made before the first line of code. This guide covers what to agree up front, what the handover package should contain, and how to run the overlap.
To hand off an MVP codebase from an agency to your own developers, settle ownership in the contract, keep the repository and every service account in your company's name from the start, and require a handover package: the code with full history, an architecture overview, environment setup, the deployment pipeline, an access list and a backlog of known issues. Then run an overlap of a few weeks in which your developers ship their first change while the agency is still available for questions.
The most common handover problem is not bad code. It is that the code, the servers and the accounts sit with the agency, and the founder discovers this when they want to leave. Three things prevent it, and all three belong in the first weeks of the project.
Ask for this list in writing before the final milestone, and treat it as part of acceptance rather than a favour. Each item answers a question your new developers would otherwise have to ask, often months after the people who knew the answer have moved on.
The full repository with its commit history, not an exported copy. History explains why code looks the way it does.
A few pages on how the apps, backend and admin panel fit together, and the decisions that are not obvious from the code.
Steps that take a new developer from a clean laptop to the app running against a test backend on the first day.
Where staging and production live, how configuration is managed, and where keys are stored, without passing them around in chat.
The pipeline that builds and ships the apps and the backend, and the steps for a release that currently live in someone's head.
Every external service with its owner and purpose, plus known issues and the next features that were deliberately left out.
API documentation and the data model deserve a special mention. If your developers understand the data, they can find their way around almost any code. On Liniowiec, a navigation app we built, the time spent designing the database, with versioned routes and clear relations, is what keeps the product easy to extend in later stages.
The riskiest way to hand over a product is a single date after which the agency is gone and the new team is alone. The safer way is a short overlap where both are working on the product and the responsibility moves across step by step.
First week: your developers set up the project from the documentation and walk through the architecture with the agency. Every gap they find in the setup gets fixed in the documents, not just explained.
Next two weeks: your team builds one real, small feature end to end, with the agency reviewing the code. This exposes the parts of the codebase that are hard to understand.
Final weeks: your team runs a release on its own, the agency answers questions, and access for the agency's accounts is removed at the end.
The length depends on the size of the product and whether your developers already know the stack. A team that has worked with Flutter before needs less time than one learning it on your product.
You cannot review code quality yourself, but you can ask about the choices that decide it. These are the ones that matter most when someone else has to continue the work.
Is there one architecture across the app? In Flutter, for example, a consistent state management approach such as BLoC or Riverpod throughout, rather than a different pattern on every screen.
Was the data model designed or improvised? A schema built quickly without thinking about how the product will grow is the most expensive thing to inherit.
Are business rules in one place? Cancellation windows, prices and permissions should live in the backend, not copied into the app and the admin panel separately.
Are there tests where money and data are involved? Full test coverage is rare in an MVP; tests around payments, permissions and data sync are not optional.
A handover is not automatically the right next step. Hiring a first developer takes time, and one person inherits every part of the product at once: the apps, the backend, the admin panel and the releases. Many founders keep the agency through launch and the first iterations, and hire once the roadmap is steady enough to plan around.
A common middle path is to hire one senior developer who works alongside the agency for a few months, then takes over as the team grows. We compared the models in hiring developers or an agency.
Whichever path you choose, it only stays open if the build was set up for it, which is why we treat the handover as part of end to end app development rather than an afterthought.
If you are about to commission an MVP, raise the handover in the first conversation, not the last. It changes how the contract, the accounts and the documentation are set up, and costs very little at that point. Our approach is described in MVP development for startups and fixed price MVP development.
If you are planning the build on a tight budget, read MVP development for bootstrapped startups as well. For how we work as a Flutter app development company, including the stack we build on, see the service page.
Agree the handover in the contract before the build starts, keep the repository and every service account in your company's name from day one, and ask for a handover package: the code with its history, an architecture overview, environment setup, deployment pipeline, an access list and a backlog of known issues. Then plan a few weeks of overlap in which your developers ship a first change with the agency still available.
Usually when the product has proven demand and changes weekly, so that a full time team pays for itself. Many founders keep the agency through launch and the first iterations, then hire and hand over once the roadmap is steady enough to plan hiring around.
It depends on the contract, so read the intellectual property clause before signing. In our contracts the economic copyrights transfer to the client once the final milestone is paid, and the repository and accounts are handed over with them.
The transfer of access takes days. Getting a new team productive takes longer; plan two to six weeks of overlap depending on the size of the product and whether your developers already know the stack.
A mainstream stack with a large hiring pool, one consistent architecture across the app, a data model that was designed rather than improvised, a reproducible setup for running the project locally, and short documentation of the decisions that are not obvious from the code.
Thomas sets the company's long term strategy and direction, identifies market opportunities, and owns business development and client acquisition. He builds strategic partnerships that last beyond a single project. He works with clients from the first strategy conversation, so their business goals, not just their feature list, drive every decision.
Tell us what you are building and when you expect to hire. We will show you how the contract, the accounts and the handover are set up so the choice stays yours.