You will get SaaS web app, custom web application as a full stack developer
Top Rated
Top Rated
Project details
Hello,
Are you looking for a powerful, scalable and modern web application that not only looks great but also performs flawlessly?
I specialize in web app development and advanced SaaS web app building that deliver high-performance solutions tailored to your business goals. As a professional full stack developer, I create secure, fast and user-friendly systems, from frontend UI to backend architecture.
Whether you need a startup MVP, business automation tool, or a complete AI web app, I will turn your idea into a fully functional, ready-to-launch solution.
What I Can Build:
Custom web application from scratch
Full stack SaaS web app development (multi-user systems)
AI-powered web app & smart automation tools
Admin dashboards & user management systems
Database & API integrations
Payment gateway integration (Stripe, PayPal, etc.)
Responsive, modern UI/UX design
Clean, scalable & maintainable code
E-commerce Functionality
Why Hire Me?
Experienced full stack developer
Clean, scalable & secure architecture
Reliable communication & on-time delivery
100% client satisfaction focus
Let’s build a powerful custom web application together, contact me before placing an order.
Thank You.
Are you looking for a powerful, scalable and modern web application that not only looks great but also performs flawlessly?
I specialize in web app development and advanced SaaS web app building that deliver high-performance solutions tailored to your business goals. As a professional full stack developer, I create secure, fast and user-friendly systems, from frontend UI to backend architecture.
Whether you need a startup MVP, business automation tool, or a complete AI web app, I will turn your idea into a fully functional, ready-to-launch solution.
What I Can Build:
Custom web application from scratch
Full stack SaaS web app development (multi-user systems)
AI-powered web app & smart automation tools
Admin dashboards & user management systems
Database & API integrations
Payment gateway integration (Stripe, PayPal, etc.)
Responsive, modern UI/UX design
Clean, scalable & maintainable code
E-commerce Functionality
Why Hire Me?
Experienced full stack developer
Clean, scalable & secure architecture
Reliable communication & on-time delivery
100% client satisfaction focus
Let’s build a powerful custom web application together, contact me before placing an order.
Thank You.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$60
|
Standard
$190
|
Advanced
$390
|
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 10 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Number of Pages | 1 | 5 | 10 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Frequently asked questions
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Allan D.
Mar 13, 2026
Full-Stack React/Node Developer Needed (MERN, Chat UI, API & RAG Integration) – Aussie SaaS Project
Tanjid is an amazing human and an even better dev. A dev I'll be working with for a lifetime. Thank you for your work so far, I cant wait for our future collaborations!
PE
Paul E.
Feb 18, 2026
URUBI — PHASE 2 CONTINUATION
PE
Paul E.
Feb 13, 2026
Urubi Phase 2 Landing Page – Developer Brief
PE
Paul E.
Jan 11, 2026
Full-Stack Developer Needed to Build MVP Web App
I had a great experience working with Shafin from start to finish. He delivered a fairly complex MVP involving backend logic, admin systems, incentives, referrals, leaderboards, settlement logic, and security/guardrails — and handled everything professionally and systematically.
What I appreciated most was:
Excellent communication throughout the project
Willingness to iterate, fix edge cases, and respect a strict QA/acceptance process
Strong backend logic and attention to data integrity and security
Very cooperative during final handover, including transferring full ownership of GitHub, hosting, database, and access
Calm, reliable, and solution-oriented when issues came up
He successfully delivered the project across multiple milestones, passed detailed QA, and supported a proper production-grade handover.
I would absolutely work with him again and recommend him to anyone who needs a serious, responsible developer for a real product (not just a quick script or prototype).
Thank you for your patience, humility and professionalism.
What I appreciated most was:
Excellent communication throughout the project
Willingness to iterate, fix edge cases, and respect a strict QA/acceptance process
Strong backend logic and attention to data integrity and security
Very cooperative during final handover, including transferring full ownership of GitHub, hosting, database, and access
Calm, reliable, and solution-oriented when issues came up
He successfully delivered the project across multiple milestones, passed detailed QA, and supported a proper production-grade handover.
I would absolutely work with him again and recommend him to anyone who needs a serious, responsible developer for a real product (not just a quick script or prototype).
Thank you for your patience, humility and professionalism.
PE
Paul E.
Dec 18, 2025
Full-Stack Developer Needed to Build MVP Web App
Amazing developer! I wholeheartedly recommend him. He is professional, patient, very skilled. He delivered ahead of schedule and more importantly, delivered everything we agreed. I look forward to working with him again.
About Tanjid Karim
Full Stack Developer | React Native | Web | MERN | React | Mobile App
100%
Job Success
Barishal, Bangladesh - 4:54 am local time
Hello, I'm Tanjid Karim, a professional Full Stack Developer, MERN Stack Developer, React Developer, and React Native Mobile App Developer with proven experience in building fast, scalable, and high-performance digital products.
As a Full Stack Developer and MERN Stack Developer, I help startups, businesses and entrepreneurs develop modern custom web applications and mobile apps that deliver real results.
I specialize in MongoDB, Express.js, React.js, and Node.js to create secure, responsive and production-ready applications. Working as a React Developer, I build clean, maintainable and scalable solutions tailored to your business goals.
I also work as a React Developer, building dynamic, user-friendly & high-performance frontends using React.js and Next.js with optimized speed and SEO best practices. As an experienced MERN Stack Developer and Full Stack Developer, I ensure high-quality architecture and performance.
As a React Native Mobile App Developer, I create cross-platform mobile apps for Android and iOS that are fast, smooth & fully integrated with backend systems. Being a React Native Mobile App Developer and Full Stack Developer, I ensure your mobile apps are scalable and production-ready.
What I Offer:
âś” Full Stack Web Development
âś” Full Stack Developer (MERN Stack)
âś” Custom Web Application Development
âś” React.js & Next.js Frontend Development
âś” React Native Mobile App Development
âś” Convert Figma to React / Next.js
âś” REST API & Backend Development (Node.js)
âś” Bug Fixing & Performance Optimization
As a Full Stack Developer, MERN Stack Developer, React Developer, and React Native Mobile App Developer, I focus on delivering clean code, scalable architecture, and high-quality solutions optimized for performance and user experience.
If you’re looking for a reliable Full Stack Developer, MERN Stack Developer, React Developer, or React Native Mobile App Developer, let’s work together to create something powerful and scalable.
Steps for completing your project
After purchasing the project, send requirements so Tanjid Karim can start the project.
Delivery time starts when Tanjid Karim receives requirements from you.
Tanjid Karim works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Analysis & Project Planning
I will carefully review your SaaS web app or custom web application requirements, define the project scope, features, and tech stack, and create a clear development roadmap to ensure smooth execution.
UI/UX Design & Wireframing
I will design modern, user-friendly interfaces for your SaaS application, including wireframes or UI mockups, ensuring a clean, responsive, and conversion-focused user experience.