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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
5.0
5.0
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
Software Developer
- FromBangladesh
- Member sinceSep 2019
- Avg. response time1 hour
- Last delivery2 weeks
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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Other Software Development Services I Offer
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
Reviews
1 reviews for this Gig
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S shah_62
United Kingdom
Ongoing collaborationExcellent work by Istiack! The quality exceeded my expectations, communication was excellent, and the final output was outstanding. Very professional, attentive to detail, and delivered exactly what I needed. Highly recommended, and I look forward to working with him again.
$50
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2 days
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Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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Most relevant
S shah_62
United Kingdom
Ongoing collaborationExcellent work by Istiack! The quality exceeded my expectations, communication was excellent, and the final output was outstanding. Very professional, attentive to detail, and delivered exactly what I needed. Highly recommended, and I look forward to working with him again.
$50
Price
2 days
Duration
I Seller's Response
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