Programming & Development Programming & Software

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

49 Reviews

Dana 193 says,

Brandon has over delivery on my project

for Looking to build MVP for a real estate p on Jul 09, 2025
Dana 193 says,

Its a pleasure working with Brandon. He delivered on time and quality work

for Looking to build MVP for a real estate p on Jun 25, 2025
Modern Business Solutions says,

Brandon, I'm truly impressed with your work on this first milestone. The infrastructure setup is clean, well-documented, and exactly what we needed. Your attention to detail and clear communication throughout the process have been excellent. The documentation you provided shows your expertise and professionalism. I appreciate how you've set us up for success with this solid foundation, and I'm excited to continue working together on the next phases of the project. Great job!

for HIPAA-Compliant Client Mgmt Platform on May 14, 2025
Kenneth 385 says,

Steady progress with frequent and informative updates. Impressive developer!

for Develop Background/Drug Screen Site on Mar 31, 2025
Kenneth 385 says,

Brandon has been prompt and professional through the process. The product is absolutely fantastic. I cannot say enough about the organization and skill that has gone into moving this project forward!

for Develop Background/Drug Screen Site on Mar 09, 2025

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Brandon Washington 1