API Development & Integration

A scenario where data produced by one system needs to be processed by another, yet the two systems are not connected — this situation gives rise to manual copying, separate data files, and workflows riddled with synchronization errors. Whether your mobile application needs to communicate with your web application, your e-commerce site needs to automatically send orders to your ERP, or you need to use third-party service data within your own system, a well-designed API layer is essential.

Our Solution Approach

In API development and integration projects, architectural decisions come first: REST or GraphQL, which data is transferred in what order, how authentication works, and what happens in error scenarios. This flow is clarified before any code is written. APIs developed with Node.js or Python are documented to OpenAPI/Swagger standards, so the integrating team can understand what is happening simply by reading the documentation.

Scope & Features

• RESTful API development — Resource-based, HTTP-compliant, versioned API design and OpenAPI documentation
• GraphQL API — Flexible query structure where the frontend team fetches exactly the data it needs; eliminates over-fetching and under-fetching
• Webhook infrastructure — Event-driven data transmission; real-time notifications to other systems and secure payload validation
• API Gateway setup — Central layer through which all API traffic passes; rate limiting, logging, and auth control in a single point
• Authentication and authorization — JWT, OAuth 2.0, API key management; endpoint-level access control
• Third-party integrations — Secure API connections with payment, marketplace, shipping, accounting, CRM and operations systems
• Rate limiting and quota management — Excessive request protection, client-based quota tracking and 429 error handling
• Integration testing and sandbox — Sandbox environment testable without touching the live API, and automated integration tests

Technical Standards

APIs developed with Node.js (Express or Fastify) or Python (FastAPI) are supported by Prisma or SQLAlchemy ORM, PostgreSQL or MSSQL database, and a Redis caching layer. All APIs are documented in OpenAPI 3.0 format. Deployment is carried out via Docker containers.

Who Is It For?

• Software teams that need a reliable backend API for mobile applications, web applications, or third-party services
• Organizations that want to connect multiple internal systems to one another and migrate to a centralized API layer
• Businesses that use or want to improve an existing system’s API and are seeking technical consulting

Expected Outcomes

• Data flow between systems becomes automatic and reliable; the need for manual transfer is eliminated
• Since mobile applications, web applications, and third-party services all draw from the same data source, inconsistencies are avoided
• With documented and versioned APIs, new integrations are completed much more quickly
• Centralized auth and rate limiting minimizes security vulnerabilities and the risk of abuse