API Development Services

Build robust, scalable, and secure APIs that power modern applications. From RESTful services to GraphQL endpoints, we create APIs that drive seamless integration and exceptional user experiences.

100+ APIs Built
99.9% Uptime
50ms Avg Response Time

Professional API Development

At DevPy, we specialize in creating high-performance APIs that serve as the backbone of modern applications. Our APIs are designed with scalability, security, and developer experience in mind, ensuring seamless integration across platforms and services.

Whether you need a simple REST API for your mobile app or a complex microservices architecture, we deliver solutions that are well-documented, thoroughly tested, and built to handle enterprise-scale traffic.

RESTful & GraphQL APIs
Comprehensive Documentation
Real-time & WebSocket Support
Enterprise Security Standards

Our API Development Services

Comprehensive API solutions for modern application architectures

RESTful API Development

Build scalable REST APIs following industry best practices with proper HTTP methods, status codes, and resource modeling.

  • RESTful design principles
  • JSON/XML data formats
  • Proper HTTP status codes
  • Rate limiting & throttling

GraphQL APIs

Flexible GraphQL APIs that allow clients to request exactly the data they need, reducing over-fetching and improving performance.

  • Single endpoint flexibility
  • Type-safe schema definition
  • Real-time subscriptions
  • Introspection capabilities

Microservices Architecture

Design and implement microservices-based architectures with proper service discovery, load balancing, and fault tolerance.

  • Service decomposition
  • API gateway implementation
  • Inter-service communication
  • Circuit breaker patterns

Real-time APIs

WebSocket and Server-Sent Events implementation for real-time data streaming and live updates in your applications.

  • WebSocket connections
  • Server-sent events
  • Real-time notifications
  • Live data synchronization

API Documentation

Comprehensive API documentation using OpenAPI/Swagger specifications with interactive testing capabilities.

  • OpenAPI/Swagger specs
  • Interactive documentation
  • Code examples
  • Postman collections

Third-party Integrations

Seamless integration with external APIs and services including payment gateways, social platforms, and business tools.

  • Payment gateway integration
  • Social media APIs
  • CRM & ERP connections
  • Custom API wrappers

Technologies We Use

Modern tools and frameworks for building robust APIs

Node.js Python FastAPI GraphQL REST APIs WebSockets Docker JWT/OAuth Postman Redis MongoDB PostgreSQL

API Development Success Stories

Real-world examples of our API solutions in action

Mobile Banking API

Built a secure banking API handling 1M+ daily transactions with real-time fraud detection and multi-factor authentication.

1M+ Daily Transactions
99.99% Uptime
Node.js JWT Redis

E-commerce GraphQL API

Developed a flexible GraphQL API for a multi-vendor marketplace, reducing data transfer by 60% and improving mobile performance.

60% Data Reduction
3x Faster Loading
GraphQL Apollo MongoDB

Real-time Chat API

Created a WebSocket-based real-time messaging API supporting 50K+ concurrent users with message encryption and file sharing.

50K+ Concurrent Users
10ms Message Latency
WebSocket Socket.io PostgreSQL

Ready to Build Your API?

Let's create robust, scalable APIs that power your applications and drive your business forward. Our expert team is ready to turn your ideas into reality.