API Development

Seamless, scalable, and secure APIs — built to connect your frontend, mobile, and third-party services.

At Dharmsy, we design and develop robust APIs that empower your applications to exchange data efficiently and securely. Whether you're building a SaaS, mobile app, or enterprise dashboard, we help you streamline backend communication using modern API architectures like REST and GraphQL.

Key Features

  • 🔗 RESTful & GraphQL APIs: Flexible, predictable, and well-documented endpoints.
  • 🔐 Authentication & Authorization: JWT, OAuth2, API keys, and role-based access control.
  • ⚡ High Performance: Optimized for speed with caching, pagination, and indexing.
  • 🛡️ Secure by Design: Input validation, rate limiting, and HTTPS enforced.
  • 🔌 Third-Party Integration: Seamless connection with payment gateways, CRMs, analytics, etc.
  • 📦 Scalable Architecture: Built for scale with microservices, Node.js, Express, and MongoDB/PostgreSQL.

Use Cases

  • 📱 Mobile backend APIs for React Native & Flutter apps
  • 🛒 Custom APIs for eCommerce & CMS
  • 🌐 APIs for web dashboards & admin panels
  • 💳 Payment and subscription gateway integration
  • 📈 Analytics, logging, and monitoring APIs

Technology Stack

  • 🟢 Node.js / Express.js
  • 🔵 PostgreSQL / MongoDB
  • 🧬 GraphQL / REST
  • 🔐 JWT / OAuth2 / Firebase Auth
  • 📊 Swagger / Postman Docs
  • ☁️ AWS Lambda / GCP Cloud Functions / PM2

Why Choose Dharmsy?

  • ✅ 4+ years of experience in backend and API development
  • ✅ Designed APIs used by 500k+ mobile users (Haiyvee App)
  • ✅ Clean code, detailed documentation & versioning support
  • ✅ Freelance-friendly & startup-ready implementation

Frequently Asked Questions

I specialize in RESTful APIs and GraphQL APIs. Whether it's public, private, internal, or third-party integrations—everything is built with security and performance in mind.

Absolutely. I build APIs optimized for mobile apps (React Native, Flutter) and modern frontend frameworks like React.js, Next.js, Angular, and Vue.

Yes, every API comes with detailed Swagger or Postman documentation for easy onboarding of developers and testers.

I follow best practices including rate limiting, input sanitization, HTTPS enforcement, JWT-based auth, and monitoring with tools like Sentry or Datadog.

I offer fixed-price quotes for small projects, hourly billing for consulting, and monthly retainers for long-term API maintenance. Contact me to get a tailored estimate.

Need Expert-Level API Development?

Let’s build secure and scalable APIs that power your apps and business.

Let's Talk →