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I will integrate apis into your javascript or nodejs application
Antonio Manzano
About this gig
Need a reliable API integration for your JavaScript or Node.js application?
I integrate REST APIs, third-party services, webhooks, authentication flows, and database connections into React, Next.js, Node.js, and Express.js projects.
I can help with:
· API keys, tokens, and OAuth
· REST endpoints and JSON data
· Webhooks and event handling
· Frontend-to-backend connections
· Database storage and synchronization
· Error handling, testing, and debugging
· Fixing existing API integrations
You will receive:
· Clean and maintainable source code
· Tested requests and responses
· Clear communication and progress updates
· Detailed comments when included in your package
· A summary of the integration and changes made
Please contact me before ordering and send the API documentation, required endpoints, authentication method, expected workflow, and relevant project files or repository access.
Third-party subscriptions, API fees, paid accounts, and provider credentials are not included. Revisions cover only the agreed integration. New APIs, endpoints, features, or unrelated fixes may require an extra or custom offer.
Get to know Antonio Manzano
Antonio Manzano
Software Developer, Web Apps, Automation and APIs
- FromSpain
- Member sinceJul 2026
- Avg. response time1 hour
Languages
Spanish, English
I am a Computer Engineering student currently entering my fourth year, focused on software development, automation, and practical digital solutions. I can help you build scripts, web applications, custom tools, API integrations, and automation workflows, as well as fix bugs, improve existing code, and create clear technical documentation. I approach every project with attention to detail, transparent communication, and a strong commitment to delivering reliable, well-structured, and maintainable results.
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FAQ
What do you need before starting?
Please provide the API documentation, required endpoints, authentication method, expected workflow, project files or repository access, and any relevant examples or error messages.
Can you integrate any API?
I can integrate most well-documented REST APIs. Please contact me before ordering so I can review the documentation, access requirements, limitations, and correct package.
Are API fees or subscriptions included?
No. Any API fees, paid plans, subscriptions, accounts, credentials, or usage charges required by the provider must be supplied and paid by the client.
What counts as a revision?
A revision covers adjustments directly related to the originally agreed API integration. New endpoints, APIs, workflows, features, or unrelated fixes are not included.
Will you test the integration?
Yes. I will test the agreed requests, responses, authentication, error handling, and workflow using the available development environment. The client should also verify it in the final production environment.
