API & Backend Development

Hey, I'm Rahman#

I'm the person who designs your database, writes your API, and tests it until it stops breaking in weird ways. No backend team you never meet, no mystery contractor halfway across the world you can't reach when something goes wrong at 11pm. Just me, and my phone is on.

The problem most growing products quietly have#

Think of your backend like the kitchen behind a restaurant. Customers never see it, but it's the whole reason their order comes out right, on time, and doesn't make them sick. A lot of products get built with a kitchen that works fine for the first ten orders a day, then falls apart the day fifty people show up at once. Data gets duplicated, an integration silently fails, or a feature that should take a day takes three weeks because nothing underneath was built to bend.

A solid backend fixes the actual cause, not just the symptom. This is also the part of the job I geek out on, which is why I wrote about the new HTTP QUERY method the week it became an official standard, in plain terms, it's a small but real example of the kind of detail that separates an API that just works from one that quietly breaks under pressure.

Why this actually matters for your business#

A backend that handles traffic spikes without falling over means you don't lose sales on your busiest day, which is exactly the day you can least afford to lose them. Clean, well organized data means fewer support tickets from customers whose order vanished or whose account got mixed up with someone else's. And a backend built to grow means adding a new feature next year is a normal project, not a full rebuild that eats your whole budget.

In plain terms, this service is about making sure the part of your product nobody sees never becomes the reason customers stop trusting you, and making sure your team can move fast later without everything quietly held together with duct tape.

Concrete outcomes clients see

• APIs that respond quickly even when traffic spikes, so busy days do not turn into lost sales
• Data that stays accurate and consistent, so customers do not get charged twice or lose an order
• Clean integrations with the tools you already use, like payments or email, without duct tape workarounds
• A backend built to grow, so adding a new feature next year is a normal project, not a rebuild

How the project runs#

1. Discovery and audit: we talk through what your product needs to do now, and I look at what's already there if anything exists.
2. Architecture and data design: I plan out how data flows and where it lives, in plain terms, before writing a single line of code.
3. Build: I write the actual API and connect it to your database and any outside tools, in short, visible stages.
4. Testing: I try to break it on purpose, with bad data, heavy load, and edge cases, before your customers ever get the chance to.
5. Launch and handoff: we go live together, and you get documentation that explains how everything works, in language a non developer can follow too.

Real results, not promises#

For an e-commerce client whose checkout API slowed to a crawl during a sale, I rebuilt the order processing pipeline and added proper caching. Average response time dropped from 2.4 seconds to under 300 milliseconds, and the site handled their biggest sale day yet without a single outage.

For a booking platform losing data whenever two people booked the same slot at once, I redesigned how the database handled that exact moment. Double bookings dropped to zero in the three months after launch, with no other changes to the app.

A quick look at how I stop bad data before it causes trouble

This is a real pattern I use on every project. Every request gets checked against a strict shape before it touches your database, which in plain terms means a typo, a missing field, or a malicious request gets rejected politely instead of quietly corrupting your data or crashing your server.

import { z } from "zod";

const orderSchema = z.object({
  productId: z.string().uuid(),
  quantity: z.number().int().positive(),
  customerEmail: z.string().email(),
});

export async function POST(request: Request) {
  const body = await request.json();
  const result = orderSchema.safeParse(body);

  if (!result.success) {
    return Response.json({ error: result.error.flatten() }, { status: 422 });
  }

  const order = await createOrder(result.data);
  return Response.json({ status: "created", order }, { status: 201 });
}

Why work with me instead of an agency#

An agency often has one person design the architecture, a different person build it, and a third person answer your support emails, none of whom talk to each other as much as you'd hope. With me, the same person who plans how your data should flow is the one writing the code and the one you email when something breaks. That means fewer things get lost in translation, and decisions get made faster because nobody's waiting on someone else's calendar.

Pricing, timeline, and how we talk#

I don't post fixed prices for this service, on purpose. A small API for one feature and a full backend rebuild for a growing product cost very different amounts, and guessing a number before understanding your actual needs helps nobody. Instead, pricing is discussed fully and openly on the discovery call: I ask what you're building, tell you honestly what it will take, and you get a written quote before any work starts.

Most single API projects ship in 1 to 3 weeks. Full backend builds typically run 4 to 8 weeks depending on how much needs connecting, and I'll give you the real number on the discovery call, not a rough guess. You'll hear from me at least once a week during the build, usually more, with a short update on what's done and what's next. I reply to messages within one business day, usually much sooner, and if something is going to run late, you hear about it early, not at the deadline.

What's included

• A backend and API designed around what your product actually needs to do, not a generic template
• Testing against bad data, heavy load, and edge cases before launch
• Documentation that explains how everything works, in plain language
• Direct access to me by email or message the whole way through

What's not included

• Ongoing server or hosting costs, which are billed by your provider, not by me
• Frontend design or interface work, unless paired with my other services
• Unlimited changes after a stage is signed off; new requests outside the agreed scope are quoted separately, not billed quietly

Full satisfaction, stage by stage#

Every stage of the build is shown to you before we move to the next one, and you sign off on it. If something isn't working the way it should, we fix it as part of that stage, not as an extra paid request, so you are never stuck paying for a backend you're not happy with.

Can you handle my scale or my industry?#

Short answer: usually, yes. I've built backends for e-commerce, booking platforms, and internal tools handling real customer data and payments, not just simple contact forms. If a project needs something outside what I do well, like massive scale infrastructure needing a dedicated ops team, I'll tell you that plainly on the call instead of taking the project anyway. If you also need the interface built or redesigned, it pairs naturally with my web and app development service or my UI/UX design service.

Ready to start?#

Book a free 20 minute call and we'll talk through what your product needs behind the scenes, what it will take to build, and what it will cost, in plain language, before you commit to anything. Book your free discovery call.