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Fiverr Pro
English
$
USD
I will develop rest API integration PHP soap XML stripe zapier klaviyo payment webhooks
Desmond
About this gig
Need a reliable API developer to connect your applications and automate your business workflows?
You've come to the right place.
I specialize in secure, scalable, and production-ready REST API, SOAP API, XML, JSON, PHP backend development, third-party API integration, webhooks, and payment gateway integration for web applications and SaaS platforms.
Whether you need to connect Stripe, Zapier, Klaviyo, CRMs, ERPs, payment gateways, shipping providers, marketing platforms, or any custom API, I'll build clean, well-documented, and high-performance integrations tailored to your business.
What I Offer
- REST API Development Integration
- SOAP API XML Integration
- PHP Backend Development
- Stripe Payment Gateway Integration
- Zapier Automation & Workflow Integration
- Klaviyo API Integration
- Webhooks Event-Based Automation
- Third-Party API Integration
- OAuth, JWT API Authentication
- JSON/XML Data Processing
- API Debugging Bug Fixes
- API Documentation
Why choose me?
- Clean, secure, scalable code
- Fast communication
- Well-documented solutions
- Reliable post-delivery support
- 100% client satisfaction
Let's build a powerful API solution that saves time, automates processes, and scales your business.
Get to know Desmond
Desmond
Building AI powered systems that automate businesses and drive growth
- FromNigeria
- Member sinceJul 2026
Languages
English, German, Spanish
I'm Desmond, an AI Developer and Automation Engineer specializing in AI solutions, AI agents,GPT applications, AI chatbots, SaaS development, and business automation. I build custom AI powered systems, workflow automation tools, backend solutions, and API integration that help companies improve efficiency, reduce costs, and increase revenue. My expertise includes AI integration, backend development, API development, data automation, and scalable software solutions. I transform business ideas to intelligent digital products using modern AI technologies and automation. machine learning solutions
FAQ
Which APIs can you integrate?
REST APIs, SOAP APIs, Stripe, PayPal, Klaviyo, Zapier, CRMs, ERPs, shipping APIs, marketing platforms, social media APIs, and custom third-party services.
Can you build a custom API from scratch?
Yes. I develop secure RESTful APIs with PHP, including authentication, database integration, documentation, and scalable architecture.
Do you work with authentication methods?
Absolutely. I support OAuth 2.0, JWT, API Keys, Bearer Tokens, Basic Authentication, and custom authentication methods.
Can you fix existing API integration issues?
Yes. I troubleshoot API errors, webhook failures, authentication problems, performance issues, and broken integrations.
Do you provide API documentation?
Yes. Every project includes clear documentation for endpoints, request/response formats, authentication, and usage instructions.
What do you need before starting?
Please provide your project requirements, API documentation (if available), server or hosting access, and any credentials needed for the integration.
