You will get Senior MERN Stack Developer | React, Node, Express & MongoDB Web Apps

Name: You will get Senior MERN Stack Developer | React, Node, Express & MongoDB Web Apps
Availability: InStock

Yasir A. Yasir A.

4.8

Top Rated

Yasir A. Yasir A.

4.8

Top Rated

Project details

Are you looking for a professional MERN Stack developer who can build a fast, secure, and scalable web application?

I am a Senior MERN Stack Developer with 7+ years of experience working with React, Node.js, Express, and MongoDB to build production-ready web applications for startups and businesses.
I focus on clean code, performance, and real business use, not just basic CRUD apps.

What I will build for you:
• Full MERN stack web applications
• React.js frontend (modern & responsive UI)
• Node.js & Express backend APIs
• MongoDB database design
• Authentication (JWT / role-based access)
• REST API & third-party integrations
• Bug fixes & performance optimization
• Dashboard & admin panels

Why clients choose me:
• Clean, scalable architecture
• Professional communication
• On-time delivery
• Production-ready solutions

Whether you need a startup MVP, business web app, or MERN stack fixes, I can deliver a reliable solution.
Please message me before ordering so we can discuss your project clearly.

Programming Languages

JavaScript, Python, Java

Coding Expertise

Localization, Performance Optimization, Design

What's included

Service Tiers	Starter $120	Standard $240	Advanced $450
Delivery Time	4 days	7 days	12 days
Number of Revisions	2	4	7
Design Customization	-	-	-
Content Upload	-	-	-
Responsive Design	-	-	-
Source Code	-	-	-

4.8

51 reviews

90% Complete

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6% Complete

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Build MVP SaaS for AI-Powered Proposal Generation

Developer Needed for Proof of Concept (POC) Yasir conducted himself professionally throughout the project, and the work completed met expectations. While we encountered some hiccups that led to scope changes and extended timelines, both parties reached a mutual agreement to pause and resume work in the future. I would recommend Yasir and his team.

Discussion discussion ai agents Great experience working together. Provided useful consultation on the platform’s workflow and developer experience. Clear communication and valuable insights, would definitely collaborate again.

Test Task - Automation Systems Operator

WordPress courses website Excellent freelancer. Yasir delivered a fully functional LMS platform with Stripe, PayPal, emails, certificates, RTL layout, and strong mobile responsiveness. Everything worked as requested, the site was stable, and there were no critical bugs. Communication was clear, professional, and responsive throughout. Highly recommended.

About Yasir

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Full-Stack Developer | AI Development & Automation | n8n, LLM, Agents

96% Job Success

4.8 (51 reviews)

Karachi, Pakistan - 1:14 pm local time

I bridge the gap between complex code and business ROI. Whether you are a startup building an MVP or an enterprise integrating Generative AI, I provide end-to-end technical leadership.

As a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐅𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫, I represent the top 1% of talent on Upwork, with a proven track record of delivering complex, high-stakes systems for global clients. Stop managing manual workflows and start scaling with intelligent systems. If your product requires robust Full-Stack Development, AI Integration, or Business Automation that performs in real-world environments, you need a systems architect.

I build production-ready software designed to eliminate manual bottlenecks, streamline operations, and scale alongside your business.

- Full-Stack Development: Scalable architecture using the MERN/PERN stack, Next.js, and TypeScript.
- AI & LLM Implementation: Custom AI Agents, RAG systems, and API integrations with OpenAI (GPT-4o), Claude 3.5, and Gemini.
- Workflow Automation: Building "Second Brain" systems and lead pipelines using n8n, Make, and Zapier to connect your entire tech stack.
- Backend & API Architecture: High-performance server-side logic with Node.js (NestJS/Express) and Python (FastAPI/Django).
- DevOps & Deployment: Secure, containerized environments using Docker, Kubernetes, and AWS.

𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐭𝐚𝐜𝐤:
- Frontend: React.js, Next.js (App Router), Tailwind CSS, Redux.
- Backend: Node.js, TypeScript, Python, NestJS, FastAPI, Django.
- Databases: PostgreSQL, MongoDB, Supabase, Redis, Pinecone (Vector DB).
- AI/ML: LangChain, OpenAI API, Anthropic, Vector Embeddings, Custom LLM Workflows.
- Automation: n8n, Make dot com, Zapier, Cron Jobs, Webhooks.
- Infrastructure: AWS (EC2, S3, Lambda), Docker, Kubernetes, CI/CD.
- FinTech: Stripe Integration (Subscriptions, Connect, Webhooks).

𝐖𝐡𝐲 𝐏𝐚𝐫𝐭𝐧𝐞𝐫 𝐖𝐢𝐭𝐡 𝐌𝐞?
Business owners don't just need "code" they need reliability. I ensure your software is maintainable, your data is secure, and your automations actually save time. I treat every project as a partnership, focusing on clear communication and technical excellence.

Ready to automate your growth? Click "𝐈𝐧𝐯𝐢𝐭𝐞 𝐭𝐨 𝐉𝐨𝐛" or "𝐒𝐞𝐧𝐝 𝐌𝐞𝐬𝐬𝐚𝐠𝐞" to discuss your project architecture and how we can turn your vision into a scalable reality.

Steps for completing your project

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

Delivery time starts when Yasir receives requirements from you.

Yasir works on your project following the steps below.

Revisions may occur after the delivery date.

Let's have a meeting to discuss details for 100% satisfaction

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

Select service tier

Starter$120

Standard$240

Advanced$450

Starter MERN Website

2-page React app with Node/Express backend, MongoDB, responsive UI.

Delivery Time 4 days
Number of Revisions 2

4 days delivery — Jun 15, 2026

Revisions may occur after this date.

Upwork Payment Protection

Fund the project upfront. Yasir gets paid once you are satisfied with the work.