Next.js development
Hire a Next.js developer for your build or codebase takeover
Your new Next.js build needs a developer who can ship it. You may also need React functionality added to an existing product, an AI integration connected to your workflow, or extra development capacity alongside your team. Maybe the Vercel deployment is broken. Maybe you inherited a codebase that nobody wants to touch.
Dimensa is a web studio. You work with one dedicated point of contact who is hands-on with your code. There is no account manager, sales handoff or agency layer in between. We can start with a new build, a defined project, ongoing development or a focused codebase investigation.
Scope
We build and maintain Next.js and React applications, including API routes, authentication, database connections and third-party integrations. We add AI features such as model integrations, structured outputs and application-specific workflows. We also work on performance issues, WebGL and three.js scenes, and Vercel deployments.
Project work means building a defined feature or application. Ongoing development means continuing from an existing backlog once the codebase and working process are clear. Urgent incident work is different: a failed deployment, broken production route or missing form submission starts with a focused diagnosis. We do not promise a repair before we know where the fault is.
How a codebase takeover starts
We do not begin by proposing a rewrite. First, we get the repository running locally where possible and check its actual state. That includes the package manager and lockfile, dependency versions, scripts, framework version and local setup instructions.
Then we review the build process and deployment logs. We trace important API and data flows, inspect environment-variable usage, and check which services the application depends on. We look for differences between local development, preview deployments and production. We also list open errors, missing access, outdated dependencies and areas where a small change could have a wider effect.
The result is a practical assessment: what works, what does not, what is risky and what can be changed safely. Only after that do we propose focused implementation work, ongoing development or a larger structural change. If the codebase is recoverable, we will tell you. If a limited rebuild is the safer option, we will explain why.
Proof from real debugging work
A 3D hero section once appeared completely broken. Nothing was visible, so it would have been easy to start changing camera positions, point sizes or shader logic. Instead, we instrumented the live WebGL context by patching drawArrays and readPixels. The logs showed real draw calls and pixel output. The scene was rendering 30,912 points every frame. The actual problem was visibility: the fragment shader's "low" color, #33445a, was too close to the page background, #0b1017. The scene was working; it was effectively hidden by its own color choice.
Another site was running at 29fps instead of 60fps. The 3D canvas looked like the obvious suspect, but we did not tune the scene first. We bisected the page layers by switching them off one at a time. The cause was backdrop-blur-md on a fixed header. It was re-blurring the animated canvas behind the header on every frame. Removing one CSS class doubled the framerate.
We also found a form that told visitors their quote request had succeeded. The API route only logged the submission to the console. It never stored the request anywhere, so every submission was silently lost. We changed the flow so success is reported only after the submission genuinely persists. These are the kinds of checks we run before assuming the visible symptom identifies the real cause.
How the engagement works
Send us the repository or URL, the current stack, the exact error and the result you need. If it is a takeover, include anything you know about the last working version, deployment setup and available access.
We review the scope and decide whether the next step is a focused investigation, a project proposal or a deployment diagnosis. After the investigation, you receive a written plan with the findings, risks and recommended work. We implement only after you approve the scope. The handover includes the relevant changes and technical notes.
We do not commit to a fixed delivery date before we have assessed the codebase. The code, dependencies and deployment state determine the actual work.
How pricing works
For web-app or AI integration work, you start with a paid consult. After the consult, you get a proposal with a fixed price. The consult is not implementation and does not automatically include feature development.
For a deployment incident, our Fix an issue service starts with a fixed-price diagnosis, with a maximum of one hour of investigation. You then get a fixed price for the repair before any work starts. You receive a written answer within 12 hours, including evenings and weekends. This is not a 24/7 service.
Hosting, domains, paid APIs, model usage, databases and other third-party costs are not included unless stated separately. New features, large refactors, migrations and work outside the agreed scope are also not silently included. We state those costs separately before implementation.
Get started
Send the URL or repository, the framework and relevant stack, the exact error, and the result you want. Tell us whether this is a new build, ongoing development, an urgent deployment issue or a takeover from another developer.
We will review what you send and tell you what information is missing, whether a diagnosis is the right first step, and what the next paid scope would be. You do not need to guess whether the answer is a fix, a focused investigation or a larger project.
Frequently asked questions
Frequently asked questions
Can you take over an existing Next.js project?
Yes. We first run the project locally where possible, inspect its dependencies, build process, deployment state and data flows, and identify missing access or documentation. You receive findings and a proposed next step before we suggest major changes.
Can you work on a React codebase you did not build yourselves?
Yes. Existing code does not need to be written by us. We work from the repository, current behaviour, logs and technical constraints instead of assuming that unfamiliar code needs to be replaced.
Can you fix a Next.js app that will not deploy to Vercel?
Yes, we investigate failed builds, runtime errors, environment variables, configuration and API routes. The first step is a diagnosis so the repair addresses the actual cause. An outage in Vercel's own infrastructure cannot be repaired by us, although we can help distinguish that from an application problem.
How much does it cost to hire a Next.js developer?
It depends on the work. A web-app or AI integration starts with a paid consult, followed by a quote with a fixed price. A deployment incident starts with a fixed-price diagnosis, limited to one hour, and you get a fixed price for the repair before we start. Hosting, third-party services and work outside the agreed scope are separate.
Can you work alongside our existing development team?
Yes. We can take on a defined feature, investigate a technical problem, review a deployment or help clear a stalled part of the backlog. We work directly with the people who need the technical information, with access and handover agreed at the start.
Do you need to rebuild an existing React or Next.js app from scratch?
No. A rewrite is not the default. We first check what is working, where the risks are and whether the current structure can support the required changes; a limited rebuild is considered only when the assessment shows that it is safer or more efficient.