REST & GraphQL API Backend Development
A REST / GraphQL API Backend costs $900 – $2,200 at PINCLER and takes 8–18 days to build. A documented, tested API backend your web, mobile and partner apps can all build on.
The price moves inside the $900 – $2,200 band based on how many of the features you need, the number of integrations, the number of user roles and whether existing data has to be migrated. That band is possible because AI coding tools write the first draft while senior engineers review every line, add automated tests and harden security. It covers this one workflow with standard integrations and never exceeds $2,500.
- Fixed price
- $900 – $2,200
- Delivery
- 8–18 days
- Built with
- Claude Code · Cursor · GPT · GitHub Copilot
A production-ready REST or GraphQL API with authentication, rate limiting, OpenAPI docs and automated tests. Custom backend development from $900 to $2,200 in 8 to 18 days.
The problem
Startups and agencies often have a mobile app, a website and a partner who all need the same data, yet the logic lives inside one codebase or a no-code tool that cannot be shared. Each new client means copy-pasted endpoints, undocumented behaviour and security gaps such as missing rate limits or leaked IDs. Hiring a backend engineer for this takes months in Dubai or Bangalore and costs far more than the API itself.
What we build
We design and build a clean REST or GraphQL API in Node.js or Python/FastAPI with JWT or API-key authentication, role-based permissions, validation, pagination, rate limiting, webhooks and versioning, backed by PostgreSQL. Claude Code and Cursor generate the schema, resolvers, OpenAPI spec and integration tests from the agreed data model, GitHub Copilot fills in the boilerplate, and we hand-review the authentication and data-access paths. The result is a documented backend your frontend and partners can integrate in an afternoon, delivered with full source code at a fixed price that never exceeds $2,500.
Features included
- REST or GraphQL, your choice
- JWT, OAuth and API-key authentication
- Role and scope-based permissions
- Input validation and consistent error format
- Rate limiting and request logging
- Auto-generated OpenAPI or GraphQL docs
- Webhooks and background jobs
- Integration test suite in CI
What you receive
- Full source code in your GitHub repository
- API deployed on AWS, Railway or your cloud
- Interactive API documentation and Postman collection
- CI pipeline running the test suite
- Handover video and 30-day warranty
How we build it
- Day 0: free 30-minute call to agree resources, auth model and consumers, followed by a written fixed quote
- Days 1–4: schema, data model and authentication are scaffolded along with the OpenAPI or GraphQL spec
- Days 5–9: endpoints, permissions, validation and rate limiting are built with integration tests running in CI
- Days 10–14: your frontend or partner integrates against staging and we fix gaps in the docs and contract
- Days 15–18: deployment to AWS, Railway or your cloud, Postman collection handover and the 30-day warranty begins
What each budget gets you
| Budget | Build | What changes |
|---|---|---|
| $900 | Core API | Up to eight resources with JWT authentication, validation, pagination, OpenAPI docs and deployment to Railway or your cloud |
| $1,500 | Standard build | Adds role and scope-based permissions, rate limiting, request logging, webhooks and an integration test suite running in CI |
| $2,200 | Full platform API | Adds OAuth and API keys, background jobs with Redis, versioning, a Postman collection and load-tested Docker deployment on AWS |
Ideal for
- Mobile app startups
- Agencies building client products
- SaaS teams
- Marketplaces
- Fintech and logistics companies
FAQ
REST / GraphQL API Backend: common questions
How much does a custom API backend cost?
Between $900 and $2,200 depending on the number of resources, integrations and auth requirements, delivered in 8 to 18 days. Fixed price, never more than $2,500.
Should we choose REST or GraphQL?
REST is simpler for public and partner APIs; GraphQL suits apps with many screens needing different slices of data. We recommend one after the discovery call and can expose both if you need to.
Can it scale and who owns it?
Yes. It runs stateless in Docker behind a load balancer with PostgreSQL, so it scales horizontally. The code and infrastructure are in your accounts from day one.
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