Phoenix - Your AI AssistantAPI Integration & Backend Development
Delivery in
2 days
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What you get with this Offer
With 12+ years of full-stack experience, I specialise in secure, reliable API integrations for web applications.
Whether you need to connect third-party services, build a custom REST API, or fix an existing integration that’s unstable or poorly documented, I focus on getting it working properly — clean logic, clear data flow and predictable behaviour.
I can help with:
Third-party API integrations (payments, CRMs, external services)
Custom REST API development
Authentication (tokens, OAuth, API keys)
Webhooks & background processing
Debugging broken or slow API integrations
You’ll get well-structured, maintainable code, clear explanations and integrations that won’t fall apart under real-world usage.
Send me your API docs or requirements and I’ll advise on the best technical approach before we start.
Whether you need to connect third-party services, build a custom REST API, or fix an existing integration that’s unstable or poorly documented, I focus on getting it working properly — clean logic, clear data flow and predictable behaviour.
I can help with:
Third-party API integrations (payments, CRMs, external services)
Custom REST API development
Authentication (tokens, OAuth, API keys)
Webhooks & background processing
Debugging broken or slow API integrations
You’ll get well-structured, maintainable code, clear explanations and integrations that won’t fall apart under real-world usage.
Send me your API docs or requirements and I’ll advise on the best technical approach before we start.
What the Freelancer needs to start the work
API credentials (keys, tokens), your app’s code repository or access, and clear documentation on which API endpoints / features you want to use.