You will get full stack web developer for Mean Mern Stack Node js React js Next js tasks

Project details
Are you looking for an experienced full-stack Web Application | MERN Developer with expertise in React js, Next js, Node js, Firebase, Express js, SaaS Developer, MongoDB, AWS etc. I have designed and developed many Web Applications, Custom Websites, and SaaS solutions from scratch to a result driven product.
In Web Application development I provide the following services:
• Complete MEAN Stack-based development
• Website Development using React.js, Node.js, MongoDB, MERN
• Web Application Development using MERN
• PSD/Xd/Figma design conversion into responsive website using React.js, Redux and Node.js
• APIs development and integration
• Code debugging and optimization for fast loading
• Mobile responsiveness and cross-browser compatibility.
• SEO-friendly web structure to rank high on Search engines.
• Full-stack Web Application development
• Bug fixings in websites
Let's discuss your project requirements in the Upwork Chat before proceeding with your order in order to make sure we are on the same page.
Full Stack Web Application Developer l MERN Stack Developer l React js l Node js l MongoDB l Figma to React js | Express js | Next js | Mern stack | SaaS
In Web Application development I provide the following services:
• Complete MEAN Stack-based development
• Website Development using React.js, Node.js, MongoDB, MERN
• Web Application Development using MERN
• PSD/Xd/Figma design conversion into responsive website using React.js, Redux and Node.js
• APIs development and integration
• Code debugging and optimization for fast loading
• Mobile responsiveness and cross-browser compatibility.
• SEO-friendly web structure to rank high on Search engines.
• Full-stack Web Application development
• Bug fixings in websites
Let's discuss your project requirements in the Upwork Chat before proceeding with your order in order to make sure we are on the same page.
Full Stack Web Application Developer l MERN Stack Developer l React js l Node js l MongoDB l Figma to React js | Express js | Next js | Mern stack | SaaS
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, PSD to HTML, DesignWhat's included
| Service Tiers |
Starter
$199
|
Standard
$499
|
Advanced
$1,999
|
|---|---|---|---|
| Delivery Time | 3 days | 8 days | 15 days |
Number of Revisions | 2 | 3 | 4 |
Number of Pages | 1 | 3 | 8 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | - | - | |
Source Code |
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Abdur R.
Apr 6, 2026
AI Automation Engineer – Twilio SMS + AI Voice Agent + OpenAI + n8n (Node.js)
Exceptional developer! Built our AI voice agent on Twilio with great accuracy and professionalism. He handled the entire integration call logic, webhooks, AI responses without any issues. Always responsive, always delivering. If you need a Twilio or AI voice automation expert, look no further. Will definitely rehire!
RF
Rph F.
Mar 16, 2026
WhatsApp AI Chatbot Developer Needed — Automate Customer Support & Lead Generation
Working with this freelancer was a very positive experience. He is highly skilled in automation and clearly knows what he is doing when it comes to building smart automated solutions. The work was delivered professionally and the communication throughout the project was excellent. He understood the requirements quickly and implemented everything smoothly. I will definitely work with him again in the future.
KA
Kamran A.
Sep 16, 2024
Multivendor Flutter App Full Stack Developer
Usama did an excellent job on the full-stack Flutter app. His work was impressive, and I thoroughly enjoyed collaborating with him. His communication was clear and effective, and he consistently met deadlines. When faced with an additional challenge, Usama was upfront about it and helped me find the right resources to address it. I appreciate his dedication and skill and look forward to working with him on future projects
About Usama
AI Automation Engineer | AI Voice Agent Developer | N8N automation
100%
Job Success
Islamabad, Pakistan - 1:06 am local time
I’m an 𝗔𝗜 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 & 𝗦𝗮𝗮𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with hands-on experience building 𝗚𝗣𝗧-𝟰, 𝗟𝗮𝗻𝗴𝗖𝗵𝗮𝗶𝗻, 𝗮𝗻𝗱 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻-𝗯𝗮𝘀𝗲𝗱 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 — from MVPs to full-scale platforms.
𝗠𝘆 𝗴𝗼𝗮𝗹: to design AI systems that actually deliver ROI, efficiency, and user engagement — not just demos.
⚡ 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱
🧠 AI SaaS & Automation Tools — complete AI platforms that scale with your business
🤖 AI Chatbots & Agents — LLM-powered assistants for support, sales, and workflow automation
📚 RAG Systems (Retrieval-Augmented Generation) — chatbots trained on PDFs, CRMs, and internal data
💬 Custom GPTs — fine-tuned assistants that match your company’s voice & knowledge
🌍 Full-Stack Development — MVPs, APIs, dashboards, and backend logic (FastAPI, Next.js, Node.js)
🧩 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸
OpenAI (GPT-4, GPT-3.5), LangChain, LlamaIndex, RAG, Pinecone, FAISS
FastAPI, Flask, React, Next.js, Node.js, PostgreSQL
Integrations: Twilio, Slack, WhatsApp, CRMs, Custom APIs
💡 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲
✅ I build scalable AI solutions — not one-off prototypes.
✅ I focus on business impact: user adoption, automation efficiency, and measurable ROI.
✅ I deliver end-to-end builds — from idea → prototype → live product.
✅ Clear communication, reliable timelines, and strong technical documentation.
📊 𝗥𝗲𝗰𝗲𝗻𝘁 𝗥𝗲𝘀𝘂𝗹𝘁𝘀
Automated customer support with GPT-4 chatbot → 𝟲𝟱% lower response time
Built an internal RAG assistant for SaaS team → cut manual work by 𝟳𝟬%
Developed AI MVP that scaled to 10K users within 2 months
💬 𝗟𝗲𝘁’𝘀 𝗯𝘂𝗶𝗹𝗱 𝘆𝗼𝘂𝗿 𝗻𝗲𝘅𝘁 𝗔𝗜 𝗽𝗿𝗼𝗱𝘂𝗰𝘁.
Whether you’re validating an MVP or scaling a full SaaS platform, I’ll help you turn your idea into a functional, revenue-driven AI product — fast and effectively.
Steps for completing your project
After purchasing the project, send requirements so Usama can start the project.
Delivery time starts when Usama receives requirements from you.
Usama works on your project following the steps below.
Revisions may occur after the delivery date.
Initial Details
Development Work