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Fiverr Pro
English
$
USD
I will create or fix custom backend development and API integration services
David Api
About this gig
Hi there! I specialize in REST API development, API integration, webhook automation, and fixing complex API issues using Node.js, JavaScript, and PHP.
Whether you're dealing with JSON/XML errors, OAuth authentication issues, or SOAP API integration, I will deliver a secure, scalable, and reliable solution.
What I can do for you:
- Fix broken API integrations (REST, SOAP, Webhooks)
- Build custom REST APIs from scratch
- Integrate third-party APIs (Stripe, Shopify, CRM, etc.)
- Handle JSON & XML data parsing and transformation
- OAuth 2.0 authentication setup (secure connections)
- Webhook development for real-time data sync
- Node.js / PHP backend API development
- Database integration (MySQL, MongoDB, Firebase)
- Error handling, logging & performance optimization
- Automation workflows & background jobs
Why choose me?
- Clean, scalable & production-ready code
- Fast communication & clear updates
- Focus on performance, security & reliability
- Built for real business use (not just code)
Send me a message before ordering so we can discuss your project and get it done right.
Get to know David Api
David Api
API Backend Development Expert
- FromUnited Kingdom
- Member sinceApr 2026
Languages
English, German, Spanish, French
Hi, I'm David, an API and Backend Development Expert.
I help businesses scale by removing manual tasks through smart, clean, and sharp API integrations. Focusing purely on core technical solutions, I am highly experienced in building robust REST API, Webhook, and OAuth connections that "just work." Let's automate your data flow and technical backend for success today!
