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Fiverr Pro
English
$
USD
I will integrate amazon, ebay, walmart api for multichannel selling
Sarwar A
About this gig
Struggling with Amazon SP-API? You're in the right place.
I develop and maintain a production SP-API application that syncs listings, pricing, and inventory across Amazon, Walmart, and eBay processing thousands of SKUs daily. I know the painful parts: LWA authentication, Feeds API, throttling, and rate-limit handling.
What I can build for you:
- Amazon SP-API integration (Listings, Feeds, Orders, Reports, Notifications)
- Walmart Marketplace API integration
- eBay API integration (Browse, Inventory, Fulfillment)
- Multichannel inventory & price sync automation
- Order import & fulfillment workflows
- Automated repricing logic
- Fixing broken or half-finished integrations
- MWS SP-API migration
Tech stack: Python (FastAPI/Django), Node.js, PostgreSQL/MySQL, AWS, Docker deployed with secure IAM roles and CI/CD.
Why me? 5+ years of backend experience, AWS Certified DevOps Engineer Professional, and a live multichannel app I maintain daily not tutorial knowledge.
Message me before ordering so I can scope your project and give you an exact quote and timeline.
Get to know Sarwar A
Sarwar A
Lead Software Engineer
- FromBangladesh
- Member sinceApr 2026
Languages
English
Lead Software Engineer | AWS & AI Architect
With 5+ years of experience and 1,900+ GitHub contributions this year, I architect secure, scalable systems. I specialize in Full-Stack development (FastAPI, Django, Next.js) and Cloud Infrastructure (AWS, Docker, CI/CD).
Expertise:
🛡️ Security: Zero-Key AWS production setups via IAM.
🤖 AI: Multitenant RAG pipelines with strict data isolation.
⚙️ DevOps: Automated CI/CD, Nginx, & Docker orchestration.
I focus on modular Clean Architecture to ensure your project is built to scale. Let’s build something robust.
My Portfolio
FAQ
Can you automate dropshipping from eBay to Amazon/Walmart?
I build marketplace API integrations for listing, pricing, and inventory management. How you source products is your business decision — I'd recommend reviewing each marketplace's policies. Technically, I can sync product data between any platforms their APIs allow.
Do I need my own developer/API credentials?
Yes — you'll need seller accounts and developer access (Amazon Developer Profile, Walmart API keys, eBay dev account). If you don't have them yet, I'll guide you through the approval process step by step. This is included in every package.
Can you fix an integration another developer left unfinished?
Absolutely — this is one of my most common projects. Send me the repo or a description of what's broken, and I'll assess it before you order so you know exactly what the fix will cost.
Which tech stack do you use?
Python (FastAPI/Django) or Node.js, with PostgreSQL/MySQL, Redis for queues, and deployment on AWS or your VPS via Docker + CI/CD. If you have an existing codebase, I work within your stack.
Will you provide documentation and handover?
Yes. Every delivery includes setup instructions, environment variable documentation, and a handover walkthrough. Premium includes deployment to your server plus a recorded demo.
Can you handle Amazon's rate limits and throttling?
Yes — my production app handles SP-API rate limits daily using token bucket logic, request queuing, and exponential backoff. Your integration won't break under load or get your API access suspended.
