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API Integration & Development

$70/hr Starting at $500

I specialize in developing and integrating robust APIs that power modern applications. Whether you need to connect with third-party services like Stripe, Twilio, or Zapier—or build custom RESTful or GraphQL APIs from scratch—I can architect secure, scalable endpoints that your frontend or third-party systems can rely on.


✅ Included in This API Integration & Development Service

🔌 Third-Party API Integrations

  • Stripe (payments, subscriptions, invoicing)

  • Twilio (SMS, voice, 2FA)

  • Zapier (workflow automation)

  • SendGrid / Mailgun

  • Google APIs (Maps, Calendar, OAuth, etc.)

  • Facebook, LinkedIn, or other social logins


⚙️ Custom API Development

  • RESTful or GraphQL API design from scratch

  • CRUD operations, pagination, filtering

  • Token-based security (JWT, OAuth 2.0)

  • Role-based access and permission logic

  • Full API documentation (Postman or Swagger)


🔐 Authentication & Security

  • API key management

  • CORS configuration

  • Rate limiting and request validation

  • Encrypted data transmission (HTTPS, TLS)


🧪 Testing & Validation

  • Unit and integration testing for APIs

  • Mock server setup for frontend collaboration

  • Error handling and logging (Sentry, Winston, etc.)


🚀 Deployment & Maintenance

  • Deploy APIs to cloud environments (AWS, Heroku, Vercel, etc.)

  • CI/CD setup for smooth updates

  • Ongoing support for endpoint changes or scaling needs


All integrations are built with maintainability and future-proofing in mind, so your system is ready to evolve.

About

$70/hr Ongoing

Download Resume

I specialize in developing and integrating robust APIs that power modern applications. Whether you need to connect with third-party services like Stripe, Twilio, or Zapier—or build custom RESTful or GraphQL APIs from scratch—I can architect secure, scalable endpoints that your frontend or third-party systems can rely on.


✅ Included in This API Integration & Development Service

🔌 Third-Party API Integrations

  • Stripe (payments, subscriptions, invoicing)

  • Twilio (SMS, voice, 2FA)

  • Zapier (workflow automation)

  • SendGrid / Mailgun

  • Google APIs (Maps, Calendar, OAuth, etc.)

  • Facebook, LinkedIn, or other social logins


⚙️ Custom API Development

  • RESTful or GraphQL API design from scratch

  • CRUD operations, pagination, filtering

  • Token-based security (JWT, OAuth 2.0)

  • Role-based access and permission logic

  • Full API documentation (Postman or Swagger)


🔐 Authentication & Security

  • API key management

  • CORS configuration

  • Rate limiting and request validation

  • Encrypted data transmission (HTTPS, TLS)


🧪 Testing & Validation

  • Unit and integration testing for APIs

  • Mock server setup for frontend collaboration

  • Error handling and logging (Sentry, Winston, etc.)


🚀 Deployment & Maintenance

  • Deploy APIs to cloud environments (AWS, Heroku, Vercel, etc.)

  • CI/CD setup for smooth updates

  • Ongoing support for endpoint changes or scaling needs


All integrations are built with maintainability and future-proofing in mind, so your system is ready to evolve.

Skills & Expertise

API DevelopmentBackend DevelopmentExpress JsExpress.jsGraphqlIntegration TestingJSONNode JsNode.jsOAuthPostman SoftwareRestfulRestful Web ServicesStripeStripe IntegrationTwilioTwilio APITwilio SDKWeb HookZapier Integrations

Related Work Collections

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