I will integrate apis and webhooks into your existing application


About this gig
Need your existing application to connect reliably to an API, webhook, or external service?
I build focused integrations inside existing React, Next.js, Node.js, JavaScript, and TypeScript applications.
I can help with work such as:
Connecting to third-party REST APIs
Sending or receiving webhooks
Authentication and token handling
Mapping and validating payloads
Moving data between systems
Handling API errors and failed requests
Database updates tied to integration events
Troubleshooting broken or unreliable integrations
Adding test coverage for integration logic
I have more than 20 years of software engineering experience and still work hands-on in production codebases.
Before I begin, Ill review the API documentation, required data flow, and relevant application code so we agree on what the integration needs to do.
If the API is undocumented, unusually complex, or the work is larger than the selected package, Ill explain that before expanding the scope. The goal is a reliable connection, not unnecessary architecture.
Get to know Amber D
Workflow Automation Software Engineer
- FromUnited States
- Member sinceSep 2026
- Avg. response time17 hours
Languages
English
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FAQ
What do you need from me before you start?
Please provide a description of what needs to connect, what data needs to move between the systems, and what should happen when the integration succeeds or fails. I will also need access to the relevant application code and the API or webhook documentation. Please do not send passwords, API keys, to
What counts as one API integration?
One integration is a defined connection between your app and one external API or service for an agreed data flow. It may use multiple related endpoints. Unrelated services, separate workflows, or substantially different data flows may require additional scope.
Can you work with APIs that require authentication?
Yes. I can work with common API authentication methods including API keys, bearer tokens, and OAuth-based integrations. Authentication complexity varies, so an unusually involved OAuth implementation or custom identity flow may require a larger package or custom offer.
Can you build or fix webhooks?
Yes. I can add webhook receiving or sending, validate incoming payloads, process events, connect webhook activity to application or database behavior, and troubleshoot existing webhook integrations that are failing or behaving inconsistently.
What if the API is poorly documented or undocumented?
Yes, but poorly documented APIs can require extra discovery. If I find that the integration needs more investigation than the selected package covers, I’ll explain what I found and confirm the additional scope before continuing.
Does this Gig include production deployment?
Yes, when the release process is straightforward and access is appropriate. Hosting, infrastructure, CI/CD changes, permissions, or complex deployment procedures may require separate scope. I’ll confirm that before making production changes.

