Backend Development and APIs

APIs that match the product

An API should describe the actions the product actually has, not a generic set of endpoints copied from a tutorial. We start from the flows: what a person creates, what they are allowed to see, and what has to stay consistent when two people act at once. The interface of the API is a design problem. Getting it wrong means the web or mobile app has to invent rules the server should have owned.

We build those APIs with Node.js, using Express or NestJS depending on the size of the product. The stack is one we can staff and maintain, and it fits the React and Next.js work we do on the front end. Authentication, validation, and clear errors are part of the API, not a layer added after the happy path works on a laptop.

Database design before the tables multiply

The database is where a product becomes honest. Orders, users, files, and statuses need a shape that matches the business, including the awkward cases: a cancelled order, a user with two roles, a record that must not be deleted because something else points at it. We design that model before we pour data into it.

A clear schema is also what makes later features possible. If you add reporting, a new client app, or an automation that reads the same data, the model either helps or it fights you. We would rather spend the time on the model at the start than rename tables six months in, when a mobile app is already depending on the old names.

Cloud infrastructure you can explain

Hosting is part of the delivery. We set up the application in a cloud environment with the pieces the product needs: the app process, the database, file storage if you have it, and a way to ship a new version without guessing. Environments are separated so a test does not write to the system your customers use.

We document how to deploy and what to look at when something fails. A backend your team cannot operate is not finished, even if the endpoints work on the day of the demo. Reliability includes the boring runbook: where the logs are, how a backup is taken, and who can roll a release back.

Security and growth without a rewrite

Security here is specific. Secrets are not committed to the repository. Access is limited to the people and services that need it. Input is validated. The actions that change data check who is asking. We do not bolt a scanner on at the end and call the system hardened. The checks live in the code paths that matter.

For us, scalable means the design does not collapse when you add users or a second client. It does not mean an infinitely large architecture on day one. We build the simplest system that can grow: clear boundaries, a database that is not doing two jobs, and an API the web app and the mobile app can share. The outcome is a reliable API, not a diagram full of boxes you do not need yet.

How a backend project runs

A typical timeline is six to twelve weeks. A narrow API in front of an existing database is shorter. A new product with several roles, payments, or file handling sits toward the long end. We phase the work so the first usable slice can be tested by the front-end team instead of waiting for every endpoint.

The schedule is confirmed after we see the flows and any systems we have to integrate with. Bring the product sketch, the data you already keep, and the apps that will call the API. If the interface is being designed at the same time, we work from the same flows so the screens and the endpoints do not diverge.

What is included

• Node.js & Express
• Database Design
• API Development
• Cloud Infrastructure

The timeline above is typical for this service. We confirm the schedule for your project once we understand the scope. When you are ready, book a consultation or start a project brief.