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Fiverr Pro
English
$
USD
I will develop integrate any rest API payment gateway or third party API for your app
Istiack
About this gig
Need a reliable API developer who delivers complete and tested integration not half-finished code?
I develop and integrate any third party API, payment gateway, REST API, or custom backend API into your website or application using Laravel, Node.js, or PHP. I have delivered 100+ API integrations for businesses in the USA, UK, Canada, Australia, and UAE.
APIs I integrate:
- Payment: Stripe, PayPal, Coinbase, Coinpayments, Blockchain, Crypto APIs
- Communication: Twilio, WhatsApp Business API, SendGrid, Nexmo, Plivo
- Social: Meta Graph API, Twitter API, Google APIs, Instagram API
- Shipping: USPS, Shipment APIs, tracking integrations
- CRM and tools: Airtable, Google Sheets, Active Campaign, HubSpot
- Custom REST and SOAP APIs from any documentation you provide
Tech stack: Laravel, Node.js, PHP, MySQL, PostgreSQL, Docker
Why choose me:
Requirements confirmed in writing before I write one line of code Fully tested and verified working before delivery not 50% done Clean documented code your team can maintain and extend Reply within 1 hour from first message to final delivery 30 days support after delivery
Send me your API documentation link and I will confirm scope and timeline in 1 hour.
Get to know Istiack
Istiack
Laravel Next Developer AI Chatbot and VPS Deployment Expert
- FromBangladesh
- Member sinceSep 2019
- Avg. response time1 hour
- Last delivery2 days
Languages
English, Hindi, Spanish
I build production-grade web systems used by 300+ businesses.
As Founder and CTO of Orbitronix Technologies, I have shipped enterprise platforms with POS, inventory, e-commerce, and AI integrations.
What I deliver:
- Laravel REST APIs with OAuth 2.0
- Next.js websites with GSAP animations
- Stripe and payment gateway integration
- Ubuntu VPS setup with Nginx, SSL, PM2
- AI chatbot with OpenAI or Claude API
- POS and inventory management systems
Stack: Laravel, PHP, Next.js, React, MySQL, Redis, LangChain, FastAPI, Tailwind, GSAP
Clean code. Production ready. Let's build.
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FAQ
What types of APIs do you develop and integrate?
I integrate any third party REST API, payment gateway API, crypto API, communication API, social media API, shipping API, and CRM API. Specific APIs I have production experience with include Stripe, PayPal, Coinbase, Coinpayments, Blockchain, WhatsApp Business API, Twilio, SendGrid, Meta Graph API.
How do you make sure the integration is complete before delivery?
Before I write a single line of code, I confirm every requirement in writing. Before I mark delivery, I run full end-to-end testing — real API calls, edge case handling, error responses, and webhook verification. You receive a tested and working integration, not a draft.
Can you integrate Stripe or PayPal payment gateway into my website?
Yes. I integrate Stripe, PayPal, Coinbase, Coinpayments, Payeer, Perfect Money, Skrill, 2Checkout, Payfast, and most other payment gateways. I handle the full setup — API keys, webhook endpoints, signature verification, payment confirmation callbacks, and refund flows. Clients in the USA, UK
Do I need to send you my API documentation?
Yes — please send your API documentation link before ordering. This allows me to confirm exact scope, timeline, and price upfront. If you do not have documentation, share the API name and I will find it. For custom API development (where I build the API from scratch), share your requirements.
Which tech stack do you use for API development?
I work primarily with Laravel (PHP) and Node.js for backend API development and integration. I also support WordPress, CodeIgniter, and plain PHP projects. For database layers I use MySQL and PostgreSQL. All code follows RESTful standards with proper authentication (OAuth 2.0, JWT, or API keys)
Can you integrate WhatsApp or Twilio SMS API into my application?
Yes. I have production experience with WhatsApp Business Cloud API (Meta-hosted), Twilio SMS, Plivo, Nexmo, and Karix. I handle webhook setup, message template approval, signature verification, and inbound message handling. This service is popular with businesses in the UK, UAE, and South Asia.
Can you fix a broken or incomplete API integration?
Yes — fixing broken integrations is one of my most common requests. Share access to your codebase and I will audit the existing integration, identify the failure points, and deliver a fully working version. I can work in any Laravel, PHP, or Node.js project regardless of who built it originally.
What support do you provide after the API integration is delivered?
Basic includes 3 days support. Standard includes 5 days. Premium includes 14 days. All bugs or issues related to my integration are fixed at no extra charge during the support period. I also provide clean documentation and commented code so your team can maintain or extend the integration
