You will get Build Scalable APIs, Web Apps & Backend with Node.js (Express/MongoDB)
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Project details
Need a secure, scalable, and fast backend for your web or mobile app?
I will build a custom Node.js backend using Express.js, MongoDB, and modern best practices—perfect for MVPs, admin panels, SaaS apps, or API-based systems.
Depending on your package (Starter, Standard, Advanced), your backend can include:
✅ RESTful API development
✅ JWT authentication & role-based access
✅ MongoDB database integration
✅ File uploads & cloud storage
✅ Error handling & validation
✅ API documentation (Swagger or Postman)
✅ Hosting (Heroku, Vercel, or your choice)
Whether you need a simple CRUD API or a complete production-grade backend, I’ll ensure your project is delivered clean, optimized, and well-documented.
Let’s build something solid—on time, and with clean code.
I will build a custom Node.js backend using Express.js, MongoDB, and modern best practices—perfect for MVPs, admin panels, SaaS apps, or API-based systems.
Depending on your package (Starter, Standard, Advanced), your backend can include:
✅ RESTful API development
✅ JWT authentication & role-based access
✅ MongoDB database integration
✅ File uploads & cloud storage
✅ Error handling & validation
✅ API documentation (Swagger or Postman)
✅ Hosting (Heroku, Vercel, or your choice)
Whether you need a simple CRUD API or a complete production-grade backend, I’ll ensure your project is delivered clean, optimized, and well-documented.
Let’s build something solid—on time, and with clean code.
Database Type
MS SQL, PostgreSQL, MongoDB, Azure Cosmos DBWhat's included
| Service Tiers |
Starter
$60
|
Standard
$120
|
Advanced
$250
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Number of Tables Added | 2 | 5 | 10 |
Schema Diagram | |||
Permissions Setup | |||
Import/Export Data | |||
Admin Panel Setup |
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RC
Ryan C.
Nov 27, 2025
Developer Needed to Build Custom Invoicing & Billing App
Working with him was a smooth and hassle-free experience. He understood the requirements clearly, delivered quality work on time, and communicated professionally throughout the project. If you’re looking for someone reliable and skilled, he’s definitely a great choice.
RC
Ryan C.
Nov 4, 2025
Developer Needed to Build Custom Invoicing & Billing App
Working with Kuldeep was a really good experience. He understood what I needed, kept in touch regularly, and completed the work on time. The quality was great, and everything went smoothly. I really appreciate his effort and would be happy to work with him again in the future.
PN
Prijwal N.
Sep 29, 2025
Port NodeJS Code and Integrate Apryse Drawing Tools
SY
Shivam Kumar Y.
Sep 6, 2025
Spike Alert System to Existing Social Media Analytics Tool
My experience working with Kuldeep was excellent. He is highly professional, communicates clearly, and delivers quality work on time. I really appreciate his dedication and problem-solving approach. I would definitely love to work with Kuldeep again on future projects!
VA
Venkata A.
Aug 23, 2025
Python Developer for Summarization Application
About Kuldeep
Full Stack Developer | React, Next.js, Node.js | SaaS & AI Integration
93%
Job Success
Khategaon, India - 10:41 am local time
𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐅𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫 | 𝟗𝟑% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 | 𝟕+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
Building a web application is one thing. Building a product that is fast, scalable, and easy to maintain is another.
Many startups and businesses come to me when they are facing challenges like slow development, messy code, performance bottlenecks, or the need to rapidly turn an idea into an MVP. My role is simple: help you build reliable, production-ready software that supports your business goals.
For the past 7+ years, I have been helping clients develop SaaS platforms, AI-driven web applications, business dashboards, APIs, and automation solutions using modern technologies like React, Node.js, Next.js (App Router), and MongoDB.
𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 𝐘𝐨𝐮 𝐖𝐢𝐭𝐡
SaaS Application Development: End-to-end multi-tenant platforms with user management, security, and scalability built-in.
React.js & Next.js Frontend Development: High-performance, SEO-friendly web interfaces built with modern server-side components.
Node.js & Express.js Backend Development: Robust server-side logic, secure authentication systems, and microservices architecture.
AI Integrations & Agents: Connecting LLMs (OpenAI, Claude API) to automate business logic, data summarization, and interactive AI features.
REST API & GraphQL Development: Building and documenting clean, scalable APIs for internal or external applications.
Payment Gateway Integration: Secure subscription workflows and metered billing pipelines via Stripe.
Database Design & Optimization: Structuring data models for high availability using MongoDB, PostgreSQL, and MySQL.
💻 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤
Frontend: React.js, Next.js, TypeScript, Tailwind CSS, Redux Toolkit
Backend: Node.js, Express.js, Python (FastAPI/Flask), REST APIs, GraphQL
Database: MongoDB, PostgreSQL, MySQL, Redis
Cloud & Tools: AWS (S3, EC2, Lambda), Docker, Git, Jira, Vercel, CI/CD pipelines
Third-Party Integrations: OpenAI API, Stripe, Firebase, Twilio, SendGrid
𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬
Cyberstash: Built a comprehensive Cyber Defense Platform featuring real-time threat monitoring dashboards, automated risk detection, and centralized security management.
NuPod: Developed a custom optimization and mathematical calculation engine for an Australian construction firm, automating project planning and increasing operational efficiency.
PropFinda: Designed and developed an AI-powered property management platform automating tenant onboarding, maintenance scheduling, and business back-office workflows.
🤝𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐭𝐨 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞
Clear and Consistent Communication: Regular progress updates with zero guesswork.
Clean, Maintainable, and Scalable Code: I write code that your next developer will easily understand.
On-Time Delivery: Strict adherence to project milestones and launch dates.
Business-First Mindset: I build features that drive user retention, revenue, and long-term business value.
If you are looking for a senior developer who deeply understands both the technical and business sides of building a software product, I would love to connect. Click the 'Invite' button to discuss your project!
Steps for completing your project
After purchasing the project, send requirements so Kuldeep can start the project.
Delivery time starts when Kuldeep receives requirements from you.
Kuldeep works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering & Discussion
Understand your project goals, features, and preferred tech stack.
API Design & Database Schema
Plan API routes and define MongoDB collections or schemas.