You will get backend developer | Node.js developer |Expree.Js |MongoDB |API integration
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Project details
Are you looking for a reliable backend developer to build a robust and scalable backend for your application? You've come to the right place!
Hi! I'm a professional Full Stack Web Application and backend developer with over 9 years of experience in Mern Stack ( React.js , Node.js , Express.js , MongoDB , AWS), Mean Stack, Python, Flask, Django and Nest.js.
๐๐ฒ๐ฟ๐ฒ'๐ ๐๐ต๐ฎ๐ ๐ ๐ฏ๐ฟ๐ถ๐ป๐ด ๐๐ผ ๐๐ต๐ฒ ๐๐ฎ๐ฏ๐น๐ฒ:
โ Custom Backend Development: Using Node.js and Express.js for powerful server-side solutions.
โ Database Expertise: MongoDB, PostgreSQL/MySQL, with Mongoose and Sequelize for data modeling.
โ API Development: Building RESTful and GraphQL APIs for seamless integration.
โ Security: Implementing JWT, OAuth, Bcrypt, and Helmet for robust protection.
โ Real-Time Features: Adding Socket.io for live chat and notifications.
โ Performance: Enhancing speed and scalability with modern optimization techniques.
โTesting: Ensuring reliability with Jest, Mocha, and Chai
โ Backend web development using Node.js and Express.js
โ Third-party API Integration
Technology I am expert in:
โ Node.Js
โ Express
โ MongoDB
โ JavaScript
Let's collaborate to build a successful product
Hi! I'm a professional Full Stack Web Application and backend developer with over 9 years of experience in Mern Stack ( React.js , Node.js , Express.js , MongoDB , AWS), Mean Stack, Python, Flask, Django and Nest.js.
๐๐ฒ๐ฟ๐ฒ'๐ ๐๐ต๐ฎ๐ ๐ ๐ฏ๐ฟ๐ถ๐ป๐ด ๐๐ผ ๐๐ต๐ฒ ๐๐ฎ๐ฏ๐น๐ฒ:
โ Custom Backend Development: Using Node.js and Express.js for powerful server-side solutions.
โ Database Expertise: MongoDB, PostgreSQL/MySQL, with Mongoose and Sequelize for data modeling.
โ API Development: Building RESTful and GraphQL APIs for seamless integration.
โ Security: Implementing JWT, OAuth, Bcrypt, and Helmet for robust protection.
โ Real-Time Features: Adding Socket.io for live chat and notifications.
โ Performance: Enhancing speed and scalability with modern optimization techniques.
โTesting: Ensuring reliability with Jest, Mocha, and Chai
โ Backend web development using Node.js and Express.js
โ Third-party API Integration
Technology I am expert in:
โ Node.Js
โ Express
โ MongoDB
โ JavaScript
Let's collaborate to build a successful product
Programming Languages
PHP, HTML & CSS, JavaScriptCoding Expertise
Cross Browser & Device Compatibility, PSD to HTML, DesignWhat's included $5,000
These options are included with the project scope.
$5,000
- Delivery Time 40 days
- Number of Revisions 0
- Number of Pages 7
37 reviews
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AE
Akinsola E.
Apr 9, 2026
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Peretz H.
Nov 11, 2025
React TypeScript SQL Node
RD
Rui D.
Sep 9, 2025
Full-Stack Developer for BSV Fee Delegator Review & Refactor (Node.js, Docker)
I worked with this contractor on a comprehensive review and refactor of our backend project, (Node.js/TypeScript, Docker, Redis, AWS).
They delivered exactly what was needed:
โข โ A detailed Phase 1 audit of the entire codebase, with a clear, prioritized report on bugs, inefficiencies, and security concerns.
โข โ Refactoring and improvements that made the backend more reliable, secure, and maintainable.
โข โ Updated Docker and deployment scripts that simplified our infrastructure setup.
โข โ Expanded and clarified documentation, including Swagger/OpenAPI for all API endpoints.
โข โ Strong communication โ daily progress updates, proactive feedback, and quick turnaround on blockers.
The work was thorough, technically solid, and clearly documented. I would highly recommend this freelancer for any blockchain or backend infrastructure project.
They delivered exactly what was needed:
โข โ A detailed Phase 1 audit of the entire codebase, with a clear, prioritized report on bugs, inefficiencies, and security concerns.
โข โ Refactoring and improvements that made the backend more reliable, secure, and maintainable.
โข โ Updated Docker and deployment scripts that simplified our infrastructure setup.
โข โ Expanded and clarified documentation, including Swagger/OpenAPI for all API endpoints.
โข โ Strong communication โ daily progress updates, proactive feedback, and quick turnaround on blockers.
The work was thorough, technically solid, and clearly documented. I would highly recommend this freelancer for any blockchain or backend infrastructure project.
KC
Kris C.
Jun 26, 2025
Refinement of Links Analysis Program
Mandeep is very talented. We have been discussing projects, and I was able to hire him for a project that involved converting Python code to JavaScript and creating a script to run and collect data for display automatically. Every time, it's "yes we can do that," I understand," "we'll get it done." Then the quote shot from 8 hrs to this isn't possible to it's possible for 30+ hours. I wrote the programs I didn't have time to troubleshoot. No way it should take 30 hrs. After I said "no" he was able to complete an initial run for 8 hrs (I checked the timesheet, it was 10 hrs 20 min). While a section of the job was completed, some things were not, and they wanted 10+ hrs to fix. Again, I wrote the original code, no way it's going to take 10 hours for simple fixes, but he was backing into a number and finding every chance to do it. I'm not sure if this is Mandeep or Esferasoft Solutions Pvt Ltd. I won't be hiring either one of them again.
GW
Gina W.
Jun 6, 2025
Mean software Developer
About mandeep
MERN Stack Developer|AI SAAS WebApp|React|NextJS Developer| MERN Stack
95%
Job Success
Chandigarh, Indiaย - 4:44 am local time
I specialize in modern JavaScript development using Next.js, React, Node.js, and TypeScript, focusing on building full stack applications that are fast, secure, and scalable. My expertise includes MERN stack development, SaaS architecture, REST APIs, and AI-powered web applications.
My goal is to turn ideas into real, working digital products by combining strong system design, clean coding practices, and modern cloud technologies.
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CORE EXPERTISE
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I focus on building systems that are scalable, maintainable, and optimized for real-world business use.
โข Full Stack Next.js development (SSR, SSG, SEO optimized apps)
โข React.js frontend development with modern architecture
โข Node.js and Express.js backend systems
โข MERN stack application development
โข TypeScript-based scalable applications
โข REST API and GraphQL API development
โข SaaS application architecture and development
โข AI-powered application development using OpenAI
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AI & OPENAI DEVELOPMENT
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I build AI-driven applications using OpenAI and modern LLM technologies. I help businesses integrate AI into real products, not just prototypes.
โข ChatGPT integration into web applications
โข AI SaaS platforms and automation tools
โข AI chatbots and virtual assistants
โข Workflow automation using AI models
โข AI-powered dashboards and analytics systems
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FULL STACK DEVELOPMENT
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Frontend:
โข Next.js
โข React.js
โข TypeScript
โข Tailwind CSS
โข Material UI
Backend:
โข Node.js
โข Express.js
โข Authentication (JWT, OAuth)
โข WebSockets for real-time apps
โข API development and integration
Databases:
โข MongoDB
โข PostgreSQL
โข Firebase
โข Redis
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SAAS & PRODUCT DEVELOPMENT
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I build scalable SaaS platforms with multi-user architecture, subscription systems, and API-driven backend systems.
โข SaaS application development
โข Multi-tenant architecture design
โข Subscription and payment integration
โข Admin dashboards and analytics systems
โข Cloud-based deployment systems
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CLOUD & DEPLOYMENT
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โข AWS (EC2, S3, Lambda)
โข Vercel deployment for Next.js
โข Docker containerization
โข CI/CD pipelines
โข Linux server management
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PROJECT EXPERIENCE
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I have delivered a wide range of applications including:
โข SaaS platforms
โข AI-powered applications
โข CRM and ERP systems
โข E-commerce applications
โข Healthcare systems
โข Real estate platforms
โข GPS tracking systems
โข Job portals
โข Analytics dashboards
โข Custom enterprise systems
Each project is built with scalability, performance, and security as core principles.
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WHY CLIENTS WORK WITH ME
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โข 9+ years of professional full stack experience
โข Strong expertise in Next.js, React, Node.js, and MERN stack
โข Deep understanding of SaaS and AI application architecture
โข Clean, scalable, and production-ready code
โข Strong communication and problem-solving ability
โข Focus on business outcomes and product success
โข Experience working with startups and enterprise teams
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WHAT I CAN HELP YOU BUILD
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โข Full Stack Next.js applications
โข MERN stack web applications
โข SaaS platforms with scalable architecture
โข AI-powered applications using OpenAI
โข Custom dashboards and admin panels
โข REST API and backend systems
โข Real-time web applications
โข Cloud-based scalable platforms
If you are looking for a Full Stack Next.js & AI Developer to build scalable SaaS applications and modern web platforms, feel free to connect.
Thanks
Mandeep
Steps for completing your project
After purchasing the project, send requirements so mandeep can start the project.
Delivery time starts when mandeep receives requirements from you.
mandeep works on your project following the steps below.
Revisions may occur after the delivery date.
1. I will follow the below steps while developing this project
Step 1: Identify & Meet with Stakeholders. Step 2: Set & Prioritize Goals. Step 3: Define Deliverables. Step 4: Create the Project Schedule. Step 5: Identify Issues and Complete a Risk Assessment. Step 6: Present the Project Plan to Stakeholders.