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Fiverr Pro
Deutsch
$
USD
I will develop or integrate any API, development or fixing
Sumbal
Über diesen Service
Looking for a backend developer who actually delivers?
I don't just integrate APIs I build systems that power real businesses. In 3+ years, I've built fintech platforms processing real payments, AI products serving thousands of users, and telecom systems handling live calls.
Your project isn't a side experiment it's a product that needs to work flawlessly.
What I'll Do For You:
⭐ Build your backend & REST APIs from scratch
⭐ Integrate any third-party API into your app
⭐ Set up payments, AI, messaging, or any service
⭐ Fix bugs & optimize slow backends
APIs I've Shipped In Production:
Stripe
️ Plaid ️
PayPal ️
Alpaca
Trading ️
OpenAI / ChatGPT ️
AI Chatbots ️
Twilio ️
SendGrid ️
Socket.io ️
VoIP ️
Brokerage ️ KYC ️
Portfolio APIs ️
️ AWS ️
Docker
️ PostgreSQL ️
MongoDB ️
️ Node.js | Express.js | TypeScript | PostgreSQL | MongoDB | AWS
Why Clients Trust Me:
️ Production-tested code not tutorial-level work
️ Clean documentation your team can maintain
️ Fast replies & on-time delivery every time
️ Free support after delivery
Message me before ordering honest estimate, no surprises.
Let's build something that works ⭐
Lerne Sumbal kennen
Sumbal
Nodejs Backend Developer
- AusPakistan
- Mitglied seitMai 2026
- ⌀ Antwortzeit1 Stunde
Sprachen
Urdu, Punjabi, Englisch
I am a software engineer specialising in scalable and reliable backend systems across fintech and telecom domains. I am proficient in Node.js, Express.js, TypeScript, Microservices Architecture, SQL, NoSQL, AWS, and RESTful API development. I have hands-on experience in real-time communication and payment gateway integrations.
Mein Portfolio
FAQ
Why should I choose you over other developers?
Because I've built real systems — not just practice projects. I've shipped fintech platforms handling real money, AI chatbots serving thousands of users, and telecom backends managing live calls across 4 companies. You get production-tested code, clear communication, on-time delivery, and free post-
I'm not technical — can you still help me?
100%! Most of my clients aren't developers. Just tell me what you want your app to do — I'll handle all the technical work and explain everything in simple terms. You focus on your business, I'll focus on building it.
Can you integrate payment gateways or AI like ChatGPT?
Yes — I've done both in production. I've integrated Stripe, Plaid, and PayPal for real payment processing, and OpenAI/ChatGPT for AI-powered features. If you have a specific API in mind, message me and I'll confirm.
Can you work on my existing project or just new ones?
Both! I regularly work on existing codebases — fixing bugs, adding features, optimizing performance, or integrating new services. Just share your repository and describe what you need. New projects from scratch are welcome too.
What if something doesn't work after delivery?
I offer free post-delivery support. If anything isn't working as expected, I'll fix it — no extra charge. Every package includes revisions, and I don't consider a project done until you're fully satisfied with the result.
