You will get Full Stack Developer | MERN Stack | React js | Node JS | Next.js | AI
Project details
Are you searching for a professional Full Stack Developer with expertise in Node.js, MongoDB, and the MERN stack? I’m a dedicated freelance developer experienced in creating modern, scalable web applications and SaaS solutions.
I provide custom development services, carefully built to match your business goals and project requirements.
My MERN Stack Services Include:
Full-stack web application development with MERN stack
Custom website and web app development from scratch
Figma, Adobe XD, or PSD to responsive front-end conversion
REST API development and third-party API integration
Code optimization, debugging, and performance improvements
Responsive, mobile-friendly, and cross-browser compatible designs
Bug fixing, updates, and long-term maintenance support
Full Stack Developer, MERN Stack Developer, React.js, Node.js, Next.js, Express.js, Laravel, PHP, MongoDB, SQL, SaaS Development, API Integration, Web Application Development, AWS, Docker, CI/CD, Authentication Systems, Secure Web Development, Cloud Deployment, UI/UX Design, Website Design, Landing Page Development, Responsive Website Development, Custom Software Solutions.
I provide custom development services, carefully built to match your business goals and project requirements.
My MERN Stack Services Include:
Full-stack web application development with MERN stack
Custom website and web app development from scratch
Figma, Adobe XD, or PSD to responsive front-end conversion
REST API development and third-party API integration
Code optimization, debugging, and performance improvements
Responsive, mobile-friendly, and cross-browser compatible designs
Bug fixing, updates, and long-term maintenance support
Full Stack Developer, MERN Stack Developer, React.js, Node.js, Next.js, Express.js, Laravel, PHP, MongoDB, SQL, SaaS Development, API Integration, Web Application Development, AWS, Docker, CI/CD, Authentication Systems, Secure Web Development, Cloud Deployment, UI/UX Design, Website Design, Landing Page Development, Responsive Website Development, Custom Software Solutions.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, PSD to HTML, Performance OptimizationWhat's included
| Service Tiers |
Starter
$110
|
Standard
$499
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 3 | 3 | Unlimited |
Number of Pages | 3 | 7 | 12 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
8 reviews
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TE
Teddy E.
May 18, 2026
React Developer Needed for Small Website Updates & Long-Term Maintenance
He did a quick and great job on my react project. He went above and beyond to accommodate the specification and delivered on time and within budget. I will surely hire him again and recommend him to colleagues.
PV
Percy V.
May 14, 2026
Full Stack MERN Developer for SaaS Project and payment integration
Amazing attention to detail and excellent communication throughout the entire project.
MS
Muhammad S.
Apr 25, 2024
I want a HTML, CSS, JS, NODEJS, MYSQL developer.
He worked perfectly and covered all the requirements with good pace. Highly recommended!
UM
Uswege M.
Jun 29, 2023
Full stack web developer
it was such a nice experience to work with Hassaan, the communication and speed of delivery was superb. i will definitely work with him again.
KP
Kim P.
Jun 12, 2023
Appraisal Order and Tracking System
Hassaan was amazing to work with on our program. This was a challenging request that required a lot of very detailed requirements. Hassaan was very patients and worked with me and my team every step of the way to be sure this project was 100% what we needed. He exceed all our our expectations. And the support after the site went live being available to fix and change things immediately was so helpful to ensure our business continued to run smoothly. I would recommend Haasan for any project especially if you need a detail oriented person with great communication and follow up.
About Hassaan
AI SaaS Developer | React, Next.js, Node.js | OpenAI , MVP to scale
100%
Job Success
Karachi, Pakistan - 1:23 am local time
I help startups build AI-powered SaaS products using React, Next.js, Node.js, OpenAI, and modern cloud infrastructure.
Over the last 7+ years, I've helped founders launch MVPs, automate workflows, integrate AI agents, and scale production applications used by thousands of users.
Whether you need an AI chatbot, SaaS platform, internal business tool, or custom automation system, I can take your product from idea to production.
🌟 𝗪𝗵𝗮𝘁 𝗜 𝐡𝐚𝘃𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱 𝗳𝗼𝗿 𝗖𝗹𝗶𝗲𝗻𝘁𝘀
𝐅𝐥𝐞𝐱𝐂𝐚𝐭𝐞𝐫𝐢𝐧𝐠𝐇𝐐 : Enterprise catering SaaS; cut order processing time by 40%
𝐌𝐞𝐝𝐢𝐜𝐮𝐬.𝐚𝐢 : AI health platform across 18 markets; integrated LLM-powered patient reporting
𝐂𝐚𝐭𝐜𝐡.𝐜𝐨 : Insurance platform for US freelancers; improved load performance by 35%
𝐆𝐚𝐥𝐢𝐥𝐞𝐨 𝐏𝐫𝐨𝐭𝐨𝐜𝐨𝐥 : Blockchain tokenization platform; built pNFT marketplace and smart contract flows
𝐌𝐚𝐜𝐡𝟑𝟑 (𝟑𝟑𝐟𝐠.𝐜𝐨𝐦) : Space investment research SaaS; gated dashboard used by BlackRock and SpaceX analysts
𝐑𝐞𝐯𝐞𝐚𝐥𝐢𝐱 : Techstars healthtech startup; scaled app from beta to commercial production on AWS
𝐎𝐤𝐚𝐥𝐩𝐡𝐚 : Motion studio portfolio and storefront; cut content update time from hours to minutes
Every project starts with your goal. It ends with a product your users actually want to use.
𝐌𝐲 𝐜𝐨𝐫𝐞 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐬:
• Full Stack Development
• SaaS Application Development
• AI Application Development
• React.js & Next.js
• Node.js & Express.js
• MongoDB & PostgreSQL
• OpenAI & LLM Integrations
• REST APIs & GraphQL
• Stripe Payments & Subscription Systems
• Authentication & Role-Based Access Control
• AWS, Vercel, Docker & CI/CD
𝗪𝗵𝗮𝘁 𝗠𝗮𝗸𝗲𝘀 𝗠𝘆 𝗪𝗼𝗿𝗸 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁
Most developers hand over a working app and disappear. I think about what happens after it goes live. Does it handle traffic spikes? Is the codebase clean enough for your team to build on? Can you add features without rewriting everything?
You are not just getting a developer. You are getting someone who thinks about architecture, performance, and product experience together, not separately.
𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐭𝐲𝐩𝐢𝐜𝐚𝐥𝐥𝐲 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐦𝐞 𝐰𝐡𝐞𝐧 𝐭𝐡𝐞𝐲 𝐧𝐞𝐞𝐝:
• A Full Stack Developer who can own both frontend and backend development
• A SaaS Developer who understands scalability, security, and long-term architecture
• An AI Developer who can integrate practical AI features into real products
• A React.js and Next.js Developer for modern web applications
• A Node.js Developer for APIs, backend systems, and integrations
• A developer who can take an MVP from idea to production
• A technical partner who thinks beyond code and focuses on product success
🌟 𝗧𝗼𝗼𝗹𝘀 & 𝗧𝗲𝗰𝗵 𝗜 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵
React.js, Next.js, Vue.js, Node.js, Express.js, MongoDB, PostgreSQL, Stripe, OpenAI API, Clerk, Prisma, TailwindCSS, Docker, Vercel, AWS
🌟 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲
• You get daily updates, you always know what's done, what's next, and how long it takes
• I flag problems early, not after they cost you time and money
• Code is modular and documented so your team can take it forward without calling me back
• I think like a product builder, not just a coder
🟢 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐟𝐨𝐫 𝐧𝐞𝐰 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬
I work best with founders, startups, and growing companies that value clean architecture, long-term scalability, and thoughtful product development.
If that sounds like your project, let's start a conversation.
𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Full Stack Developer, SaaS Developer, AI Developer, React.js, Next.js, Node.js, PostgreSQL, MongoDB, OpenAI, MVP Development, Web Application Development
Steps for completing your project
After purchasing the project, send requirements so Hassaan can start the project.
Delivery time starts when Hassaan receives requirements from you.
Hassaan works on your project following the steps below.
Revisions may occur after the delivery date.
📝 Requirement Review & Clarification
Review client-provided documents and materials Clarify doubts (if any) via messages or call
Work start
Create a modern, SEO-friendly website. Share for client feedback & revisions Final approval before submmision