CoreFi.Tech

API Development

APIs your partners trust and your engineers enjoy.

Secure, documented, versioned REST and GraphQL APIs and integrations — built for reliability and scale.

Discuss your API project
API DEVELOPMENT
01
API DesignRESTful and GraphQL API architecture and specification
02
API BuildImplementation with authentication, rate limiting, and monitoring
03
IntegrationThird-party API connections, webhooks, and data sync
04
SecurityOAuth, API keys, CORS, input validation, and audit logging

Brittle integrations cost more than you think

Poorly designed APIs create cascading failures, security holes, and developer frustration. Well-designed APIs become your competitive moat.

API engineering standards

Security-first design

OAuth 2.0, rate limiting, input validation, and audit logging built in.

Developer experience

Auto-generated docs, SDKs, and sandbox environments.

Version management

Non-breaking evolution with proper versioning strategy.

Scale-ready

Designed for high throughput with caching, queuing, and monitoring.

What we build

Capabilities

01

API Design

RESTful and GraphQL API architecture and specification

02

API Build

Implementation with authentication, rate limiting, and monitoring

03

Integration

Third-party API connections, webhooks, and data sync

04

Security

OAuth, API keys, CORS, input validation, and audit logging

Our process

How we deliver

01

Specification

OpenAPI/GraphQL schema design and review.

02

Build

Implementation with full test coverage.

03

Document

Auto-generated docs, SDKs, and examples.

04

Deploy

Monitoring, rate limiting, and scale testing.

Business outcomes

99.99%API uptime target
< 50msP95 response time
100%Endpoint documentation coverage

Technology stack

What we build with

Node.jsTypeScriptPostgreSQLRedisGraphQLRESTAWS API GatewayDocker

Frequently asked questions

Tell us what you're building.

We'll show you the fastest credible path to ship it.

Discuss your API project

A senior engineer on the first call. No sales handoff, no obligation.