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Fiverr Pro
English
$
USD
I will integrate any rest api, whatsapp business api or payment gateway
yabidev
About this gig
Two systems that should talk to each other, but do not? That is what I fix.
I connect APIs for a living - and I build my own products on top of them, so I know what breaks in production: expired tokens, silent webhook failures, rate limits, and sandbox setups that fall apart the day you go live.
What I integrate:
- Any REST, JSON, XML, SOAP or GraphQL API into your site, app or backend
- WhatsApp Business API and Meta Cloud API, including app review
- Payment gateways: Stripe, PayPal, one-time, subscriptions and webhooks
- Marketplace and e-commerce APIs: product, order, price and stock sync
- CRM, ERP, Google Sheets, Telegram and OpenAI integrations
- Webhooks, scheduled jobs and two-way data sync
- Custom APIs built from scratch, with auth and documentation
I also fix integrations somebody else left broken - failing calls, wrong auth flow, data not arriving.
You always get:
- Working code with proper error handling, retries and logging
- A short handover doc so your next developer is not lost
- Production keys never hardcoded
- 14 days free bug support after delivery
Send me the API docs or the error you are getting before ordering and I will tell you what it needs.
Get to know yabidev
yabidev
Full Stack Developer SaaS Integrations Automation and Business Growth
- FromTurkey
- Member sinceJun 2026
- Avg. response time1 hour
Languages
English
I'm part of yabidev, a 3-person full-stack team helping SMEs build and grow their digital presence — custom websites, SaaS/API integrations, WhatsApp business automation, marketplace integrations, and performance-driven Meta/Instagram ad campaigns. We've built and shipped SaaS products from scratch, so I get both the technical and business side of what clients actually use. I also have a cybersecurity background, so things don't fall apart in production. I move fast, communicate clearly, and care about real results — bring me a vague idea, I'll turn it into a working system.
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FAQ
I don't have API documentation. Can you still help?
Usually yes. Send me the platform name or a dashboard screenshot and I'll find the docs myself. If the platform genuinely has no API, I'll tell you before you order instead of taking the job.
Can you fix an integration another developer built?
Yes, that's a large part of what I do. Send me the error message or the failing endpoint and I'll diagnose it first. If it needs a rebuild rather than a patch, I'll say so upfront.
How do I share my API keys safely?
Send test/sandbox credentials through Fiverr messages only, never in a public place. Keys go into environment variables, never into the code. I can also work with keys you rotate right after delivery.
Do you handle WhatsApp Business API setup?
Yes, including Meta Cloud API setup, webhook verification, template messages and the app review process for the permissions you need.
What about payment gateways?
Stripe and PayPal, one-time payments, subscriptions, Connect/multi-vendor flows and webhook handling for failed or refunded payments.
Will it break when the API changes?
I build with error handling and logging so failures are visible instead of silent. I fix bugs free for 14 days, and monthly maintenance is available for APIs that change often.
Can you build an API, not just connect one?
Yes. Custom REST APIs with authentication, rate limiting, versioning and Postman documentation your team can actually use.
