API Development
Well-documented, secure and scalable REST and GraphQL APIs with the observability to run them in production.
What is API Development?
API development is the work of designing and building the interfaces that let applications, services, and partners exchange data securely and reliably. ADM Technology builds REST and GraphQL APIs with OpenAPI documentation, authentication, rate limiting, and versioning, delivering sub-100ms p95 latency, 100% documented endpoints, and a versioning strategy that ships zero breaking changes.
Overview
Robust REST & GraphQL services
We design API-first backends with clear contracts, authentication, rate limiting and documentation — built to integrate cleanly with web, mobile and partner systems.
<100ms
p95 latency
100%
Documented
0
Breaking changes
Exactly what we do, step by step
Every API Development engagement follows a clear, phased path — so you know precisely what work happens, in what order, and what comes out of each stage.
API Design
We model your resources, endpoints, and payloads up front, choosing REST or GraphQL per use case and writing the OpenAPI or schema contract before a line of implementation code is committed.
Auth & Security
We implement authentication, authorisation, and rate limiting using OAuth2, JWT, or API keys, with input validation and abuse protection sized to your traffic and threat model.
Core Implementation
We build the endpoints, resolvers, and business logic against the agreed contract, with clean error handling, pagination, and consistent response shapes across the surface.
Events & Webhooks
We add webhooks and event streams so consumers react in real time, with signed payloads, retry logic, and delivery logs for reliable integration with third parties.
Testing & Contracts
We write contract, integration, and load tests that verify behaviour and performance, catching breaking changes in CI before they ever reach a consumer.
Docs & Versioning
We publish interactive OpenAPI documentation and set a versioning strategy with deprecation windows, so partners integrate quickly and upgrades never break existing clients.
What's included in every engagement
The building blocks we bring to your product — proven, production-grade and tailored to your goals.
Exactly what you walk away with
Tangible, hand-off ready assets — no black boxes, full ownership.
Related services
API Development — common questions
Straight answers to what teams ask us most before starting. Need specifics? Talk to a senior engineer.
It depends on your consumers. REST suits straightforward, cacheable, resource-based access and wide compatibility; GraphQL suits clients that need flexible, precise queries over complex, related data. We assess your use cases in the design phase and often combine both where each fits best.
Let's build something exceptional together.
Tell us where you're headed. We'll show you how to get there faster — with production-grade software and a senior team.