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You will get Node APIs/Backend using Serverless or Express Framework deployed on AWS, GC

Muhammad A.Status: Offline
Muhammad A. Muhammad A.
4.9
Top Rated
Preview image

Let a pro handle the details

Buy Other Web Programming services from Muhammad, priced and ready to go.
Muhammad A.Status: Offline
Muhammad A. Muhammad A.
4.9
Top Rated
Preview image

Let a pro handle the details

Buy Other Web Programming services from Muhammad, priced and ready to go.

Project details

šŸŒŸ TOP RATED PLUS Developer

šŸ… 6+ years of experience
šŸ† 140+ Successful Projects On Upwork.
šŸ… 3,000+ Upwork Hours
āœ… Senior Full Stack Developer

Backend (Nodejs, PHP, Express, Koa, Hapi)


I'll write efficient, low latency APIs for your backend system and deploy them on AWS Lambda, or any other cloud system. I'll write APIs using NodeJS and serverless framework.

I can also create APIs without using the serverless framework as well so you should be able to deploy them anywhere. I can help you with deployment as well wherever you want to deploy it.

I can help you with other AWS services like AWS API Gateway, SES, S3, SNS, Cognito, Transcoder, and other services of other Cloud platforms like Google Cloud, and Azure.

Why you should work with me?

- Efficient performance
- Low latency
- Using best practices
- Using Nodejs latest version
- Robust and extendable

I can also help you with the integration of the APIs in Admin Panel, Website, Android, or iOS application.
Web Programming Project
API Development, API Integration, Data Dashboard
Programming Languages
PHP, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$250
Standard
$999
Advanced
$1,999
Delivery Time 3 days 10 days 15 days
Number of Revisions
25Unlimited
Source Code
4.9
157 reviews
96% Complete
(151)
3% Complete
(5)
1% Complete
(0)
1% Complete
(0)
1% Complete
(1)

PH

Peter H.
5.00
May 8, 2026
Recording Transcription Portal Muhammad was great to work with throughout the project. He was professional, responsive, and delivered high-quality work on time. Communication was smooth, and he handled feedback quickly and efficiently. The final result exceeded our expectations, and weā€™d gladly work with him again. Highly recommended!

RK

Robert K.
4.00
Feb 17, 2026
Booking Platform Bugs

RK

Robert K.
5.00
Jan 8, 2026
Booking Platform Bugs

SS

Sandy S.
5.00
Jan 8, 2026
Messaging System update Freelancer has been great to work with. Very responsive and knowledgeable.

JT

Jian T.
1.00
Jan 3, 2026
React Native (Expo) Front-End Developer Needed billed me for something we never approved or can even use. just wanted to collect the payment.
Muhammad A.Status: Offline

About Muhammad

Muhammad A.Status: Offline
AI Voice Agent & Full Stack Developer | Vapi, Retell, Twilio | RAG LLM
96% Job Success
4.9 Ā (157 reviews)
Toronto, CanadaĀ - 3:53 am local time
I build production-grade AI voice agents, RAG pipelines, and LLM-powered SaaS platforms using Vapi, Retell AI, Twilio, Deepgram, and ElevenLabs. 12+ years as a full stack developer and founder of Tech Stone Global, serving clients across North America.

Most AI developers can build a demo. I ship systems that survive real users, real call volume, real revenue, and strict SLA requirements.

šŸŽ™ļø š€šˆ š•šØš¢šœšž š€š šžš§š­š¬ (š‚šØš«šž š’š©šžšœš¢ššš„š­š²)

End-to-end AI voice agents and AI receptionists: inbound and outbound calling, appointment booking, lead qualification, real-time transcription, sentiment analysis, CRM integrations (GoHighLevel, HubSpot, custom), and human handoff flows.

āœ” Vapi, Retell AI, Bland when you need fast platform-based deployment
āœ” Custom Twilio + Deepgram + ElevenLabs pipelines when you need full control over latency, cost, and conversation logic
āœ” OpenAI, Claude, and open-source LLMs for the conversational layer

Recent work: HopDial, a VoIP platform with call transcription, AI sentiment analysis, and scalable AWS infrastructure, plus outbound AI calling systems and AI receptionists for SMBs and service businesses.

šŸš€ š‘š€š†, š‹š‹šŒ & š€šˆ š’ššššš’

I run my own production products, so I know what breaks at scale and what actually generates revenue:

āœ” Legal AI platform: production RAG system (LangChain + vector search) serving ~4,000 active users
āœ” ProNotepad: Next.js SaaS with AES-256 encryption, voice-to-text, and AI features. 1,000+ users on web and Android
āœ” WhoseNo: reverse phone lookup platform with 2.68M+ phone records and steady daily traffic
āœ” WhatsApp-first AI business automation platform, plus AI chatbots for web and WhatsApp

Client work includes real estate transaction platforms (Next.js), pharmaceutical marketplaces (React Native + NestJS), and private dining and booking platforms.

šŸ› ļø šš«šØšš®šœš­š¢šØš§ š’š­šššœš¤

Voice AI: Vapi, Retell AI, Twilio, Deepgram, ElevenLabs
AI / LLM: OpenAI, Claude, LangChain, RAG (Pinecone, Chroma)
Frontend: Next.js, React, React Native, Tailwind
Backend: Node.js, NestJS, FastAPI, Python
Databases: PostgreSQL, MySQL, MongoDB, Prisma
Infrastructure: AWS (EC2, Lambda, S3), Cloudflare, Docker
Rapid MVPs: Bubble combined with custom APIs and AI agents when speed-to-market matters

I only list what I've shipped in production, not tools I've experimented with.

šŸŽÆ š–š”šØ šˆ š–šØš«š¤ ššžš¬š­ š–š¢š­š”

1. Founders building serious voice AI or AI SaaS products
2. SMBs and service businesses (clinics, real estate, agencies) that want AI calling agents to book appointments and convert leads
3. Funded startups scaling from prototype to production
4. Agencies needing a senior AI and architecture partner
5. Teams on Bubble that want real AI and backend systems behind their app

12+ years means I've already made the expensive mistakes, so you don't have to. You get clean architecture, honest timelines, and production-ready systems your next developer won't struggle to maintain.

If you're building something serious with AI voice agents, RAG, LLM apps, or AI SaaS, send an invite and share your idea. I'll respond with a technical breakdown, not a generic pitch.

Keywords: AI Voice Agent Developer, Voice AI, AI Receptionist, AI Agent Development, AI Automation, AI Chatbot, Vapi, Retell AI, Twilio, Deepgram, ElevenLabs, RAG, LLM, LangChain, Full Stack Developer, Next.js, Node.js, FastAPI, Appointment Booking, Lead Qualification

Steps for completing your project

After purchasing the project, send requirements so Muhammad can start the project.

Delivery time starts when Muhammad receives requirements from you.

Muhammad works on your project following the steps below.

Revisions may occur after the delivery date.

Send requirements document

You just have to give me the requirements document. I'll compile that and discuss it with you the details and then I'll start writing APIs.

Review the work, release payment, and leave feedback to Muhammad.