I will develop fix or integrate custom rest apis


About this gig
I guess you're looking for a reliable developer to integrate or build APIs for your website or application?
Look no further you're in the right place!
I specialize in integrating all kinds of APIs, from traditional REST/SOAP to powerful AI tools like ChatGPT, OpenAI, and more, using PHP, Laravel, JavaScript, Node.js.
What I Will Build For You:
- E-commerce API Integration (Shopify, WooCommerce, OpenCart, Amazon, eBay)
- CRM & Marketing APIs (HubSpot, Zoho, Mailchimp, ActiveCampaign)
- Payment & Messaging APIs (Stripe, PayPal, Twilio, WhatsApp)
- AI & Google APIs (OpenAI, ChatGPT, Google Sheets, Analytics)
- Shipping APIs (DHL, FedEx)
- Custom API Development (REST, SOAP, GraphQL)
- Custom backend automation flows
- Secure API authentication (OAuth, Tokens)
- Webhooks setup & event handling
- Third-party app integrations (Zapier, Make, etc.)
Why choose me?
- Clean and scalable code
- Fast communication
- On-time delivery
- 100% client satisfaction
Tech Stack: Node.js, JavaScript, Express, REST APIs, MongoDB, Shopify Admin API, Storefront API, Webhooks, OAuth.
Message me before placing order - I will confirm if your project is feasible at low cost.
Get to know James B
Backend and Frontend Developer!
- FromNigeria
- Member sinceMay 2026
- Avg. response time1 hour
Languages
North Ndebele, English, French, Spanish, German, Greek
My Portfolio
FAQ
Can you create a custom webhook or API endpoint for my app?
Yes, I can develop secure, custom endpoints or webhooks to handle incoming/outgoing data for your system or third-party services.
Do you provide API documentation or postman collection?
If requested, I can provide API documentation, Postman collections, or usage guides to help you or your team understand and test the integration.
Can you handle authentication methods like OAuth2, API Keys, or Bearer Tokens?
Yes, I have experience handling all common authentication methods including OAuth2, API keys, bearer tokens, and HMAC signatures.
What Shopify APIs do you integrate?
I integrate Admin API, Storefront API, Products, Orders, Customers, Cart, Checkout, Webhooks, and any custom private app API.
Do you handle both backend and frontend integration?
Yes. I can set up backend logic, authentication, database, and also connect the API to your frontend.
