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API-driven backend development

One backend.Every front end.

We design the API contract first, then build the backend behind it — so your web app, mobile apps, partners and internal tools all talk to the same system, and new ones plug in without a rewrite.

See how we work
API contract and mock server published
Week 1
Release cadence for new endpoints
1–2 wk
Uptime SLA once we host it
99.9%

Why backends slow teams down

When the backend grew around one screen at a time, every new channel means new code paths, duplicated rules and a longer release cycle.

01

Logic lives in the UI

Pricing, permissions and validation are copied between the web app and the mobile app — and they no longer agree.

02

No contract, no parallel work

Front-end teams wait for the backend to be finished before they can start, because nobody wrote down what the API will return.

03

Integrations are one-offs

Each partner, payment gateway or ERP gets its own custom endpoint and its own failure mode. Nobody knows which ones are still in use.

04

Undocumented and untested

The only documentation is the code. Changes break clients silently, so the team stops changing anything.

How we build API-first

Our philosophy is simple: the API is the product. Business rules live in one place, behind a versioned contract that every client — yours or a partner's — can rely on.

Contract before code

We write the OpenAPI or GraphQL schema with you in the first week. Front-end and mobile teams build against a mock server from day one, so work runs in parallel instead of in sequence.

Business rules in one place

Pricing, permissions, workflows and validation live in the backend, not in each screen. Every client gets the same answer to the same question.

Secure by default

Token-based authentication, role- and tenant-level authorisation, rate limiting, input validation and audit logs are part of the first release — not a phase two.

Versioned and backward compatible

Breaking changes go into a new version with a deprecation window. Old mobile app builds keep working while users update.

Documented as it ships

Reference docs are generated from the contract and published with every release, with examples your partners can copy and run.

Fast in stages

We ship the first production endpoints within weeks, then add resources in small releases. You use the backend while it grows, instead of waiting for a finished one.

The stack

Languages & runtimes

  • Node.js
  • TypeScript
  • Express / Fastify
  • Next.js route handlers

API styles

  • REST (OpenAPI 3)
  • GraphQL
  • Webhooks
  • Server-sent events

Data

  • MongoDB Atlas
  • Appwrite
  • PostgreSQL
  • Redis

Security & quality

  • JWT / OAuth 2.0
  • Role-based access
  • Contract tests
  • Rate limiting

How an engagement runs

  1. 1Week 1

    Model

    We work through your entities, workflows and edge cases with the people who run them today.

  2. 2Week 1–2

    Contract

    An API schema and mock server are published so every client team can start building immediately.

  3. 3Weeks 2–8

    Build in slices

    Endpoints ship to production in vertical slices — data, rules, tests and docs together — every one to two weeks.

  4. 4Ongoing

    Run and extend

    We host, monitor and version the API, and add new resources as new channels and partners come on.

Case study · Education

Zero downtime through a 300% traffic surge

An education platform's legacy servers crashed during exam and admission spikes. We rebuilt it API-first on Vercel's edge network.

Read the EdTech Platform case study →
Downtime during a 300% surge
0
Response time
120 ms
Web and mobile on one backend
API-first

Questions CTOs ask

REST or GraphQL?

REST for most business systems and partner integrations — it is simpler to cache, secure and document. GraphQL when many different clients need different shapes of the same data. We will recommend one in the modelling week and explain why.

Can you build an API on top of our existing system?

Yes. We often put a clean, documented API in front of a legacy database or application first, then replace what is behind it gradually without clients noticing.

How quickly will we see something working?

The contract and a mock server in the first week or two; the first production endpoints usually within a few weeks, depending on how much existing data needs migrating.

Do we get the source code?

Custom code written for you is yours under the agreement, in a repository in your organisation. Our platform products are licensed separately.

Who maintains it after launch?

We do, under a managed plan — hosting, monitoring, security updates and new versions — with the SLA response times. Your team can contribute alongside us if you prefer.

Related services

Tell us what you run today.We'll tell you what we'd build.

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