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Fiverr Pro
English
$
USD
I will integrate third party apis into react nextjs and nodejs apps
Ahmad Raza
About this gig
Need a reliable third-party API integrated into your web application?
I am a Full Stack Software Engineer and Team Lead with 3+ years of experience building production integrations for healthcare, fintech, payments, analytics and communication systems.
I can help with:
REST API integration and development
OAuth, API keys, JWT and token refresh
Webhooks and signature verification
Payment, SMS, email, healthcare and trading APIs
Request and response mapping
Database storage and synchronization
Pagination, rate limits, retries and timeouts
Validation, logging and error handling
React, Next.js, Node.js, Express and TypeScript
Postman testing and API documentation
I focus on secure configuration, predictable failure handling and maintainable codenot temporary patches.
Each package covers a defined API flow. Paid subscriptions, provider fees, production credentials, major UI work and undocumented APIs are not included unless agreed.
Please message me before ordering with the API documentation, current stack and expected workflow.
Get to know Ahmad Raza
Ahmad Raza
MERN Stack Developer and Vibe Coded App Specialist
- FromIndia
- Member sinceJan 2022
- Avg. response time1 hour
- Last delivery1 year
Languages
Hindi, Urdu, English
• FULL STACK ENGINEER & TEAM LEAD with 3+ years of experience
• TECH STACK: React, Next.js, Node.js, Express, TypeScript, MongoDB, SQL and Redis
• SERVICES: Web app development, bug fixing, API integration, database optimization and deployment
• VIBE CODED APPS: I review, fix, refactor and make AI-generated apps production-ready
• DEPLOYMENT: Docker, PM2, Nginx and DigitalOcean
• WORK STYLE: Clean architecture, reliable delivery and clear communication
Other Software Development Services I Offer
FAQ
Which types of APIs can you integrate?
I can integrate documented REST APIs including payments, SMS, email, healthcare, analytics, authentication, CRM, trading, storage and business platforms. I will review the documentation before confirming the scope.
What does one API integration include?
It includes the specific workflow described in the package or custom offer. This may involve authentication, requests, response mapping, error handling, database storage and frontend integration depending on the selected package.
What counts as one API endpoint?
One endpoint means one API operation, such as fetching customers, creating a payment, updating an order or receiving a webhook. Different operations or HTTP methods may count separately.
Can you work with an undocumented API?
Usually not through a standard package. I need official documentation, sample requests and responses, authentication details and test access. Undocumented or reverse-engineered integrations require separate evaluation.
Can you implement OAuth and token refresh?
Yes. I can implement supported OAuth flows, access-token storage, refresh tokens, expiration handling and authorization callbacks after reviewing the provider documentation.
Can you integrate and secure webhooks?
Yes. I can implement webhook endpoints, signature verification, payload validation, idempotency, event storage, error handling and retry-safe processing where supported by the provider.
Will you provide the API account or credentials?
No. The buyer must create the provider account, accept its terms and provide authorized sandbox credentials. Subscription fees, API charges and provider approval are the buyer's responsibility.
Can you integrate the API into an existing codebase?
Yes. I can work with existing React, Next.js, Node.js, Express, TypeScript, MongoDB and SQL applications after reviewing the repository, architecture and setup instructions.
Can you also develop a custom REST API?
Yes. I can build Node.js and Express REST APIs with validation, authentication, database integration and documentation. A custom offer may be required because API development differs from third-party integration.
Does the package include deployment?
Premium includes basic deployment assistance when the existing environment is ready. New server setup, Docker configuration, Nginx, CI/CD or infrastructure troubleshooting may require an extra or custom offer.
