You will get bug fixes & web app redesign using React|Next.js|Node.js|MongoDB|PostgreSQL
Top Rated
Top Rated
Project details
Looking for a full-stack developer to fix bugs and redesign your app?
I specialize in React.js, Next.js, Node.js, TypeScript, MongoDB, and PostgreSQL.
I have 4+ years of experience delivering clean, modern, responsive apps.
What I offer:
• Bug Fixing & Code Cleanup: Solve frontend, backend, or database issues.
• Code Optimization & Refactoring: Improve performance and maintainable code.
• UI/UX Redesign: Modern, clean, and responsive interface improvements.
• Database & API Integration: Work with MongoDB, PostgreSQL, MySQL, REST APIs.
• Performance & Security: Optimize speed, responsiveness, and secure your app.
• Testing & Validation: Ensure bug-free and reliable functionality.
• Documentation & Comments: Clear explanations for easy maintenance.
• Support & Maintenance: Continuous updates, improvements, and fixes.
• Free Consultation: Discuss your project requirements before starting.
If you need bug fixes, UI redesign, or code optimization,
I deliver high-quality, timely solutions tailored to your needs.
Free Consultation available—let’s chat. I’ll provide a clear timeline
and cost estimate once I understand your project.
I specialize in React.js, Next.js, Node.js, TypeScript, MongoDB, and PostgreSQL.
I have 4+ years of experience delivering clean, modern, responsive apps.
What I offer:
• Bug Fixing & Code Cleanup: Solve frontend, backend, or database issues.
• Code Optimization & Refactoring: Improve performance and maintainable code.
• UI/UX Redesign: Modern, clean, and responsive interface improvements.
• Database & API Integration: Work with MongoDB, PostgreSQL, MySQL, REST APIs.
• Performance & Security: Optimize speed, responsiveness, and secure your app.
• Testing & Validation: Ensure bug-free and reliable functionality.
• Documentation & Comments: Clear explanations for easy maintenance.
• Support & Maintenance: Continuous updates, improvements, and fixes.
• Free Consultation: Discuss your project requirements before starting.
If you need bug fixes, UI redesign, or code optimization,
I deliver high-quality, timely solutions tailored to your needs.
Free Consultation available—let’s chat. I’ll provide a clear timeline
and cost estimate once I understand your project.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$30
|
Standard
$96
|
Advanced
$198
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Frequently asked questions
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DB
Dejon B.
Jul 13, 2026
Deploying A Claude Artifact Web Application
MD Rakiul did an incredible job on our web development project. He took the time to understand our requirements, communicated clearly at every milestone, and delivered clean, highly performant code. He went above and beyond to optimize the platform's performance and ensure everything was scaling correctly. A top-tier developer who is reliable and highly skilled. Will definitely hire him again for future builds!
HA
Hammad A.
Nov 6, 2025
React.js Developer
SN
Siraj U N.
Oct 5, 2025
Urgent: Fix Social Media Login Issue in Full-Stack Website
High-level skills and great problem-solving.
Highly recommend!
Highly recommend!
SB
Sabeeha B.
Oct 3, 2025
Convert Landing Page Design to Responsive React Component
Great work! The landing page was delivered exactly as I requested—clean, modern, and fully responsive. The code is well-structured and easy to follow, and I really appreciate the clear comments throughout. Smooth scrolling and hover effects were implemented perfectly. Communication was excellent, and the project was completed on time. Highly recommend working with this freelancer!
About MD Rakibul
Expert AI SaaS MVP Developer | AI Agents & Workflow Automation
100%
Job Success
Satkhira, Bangladesh - 6:08 am local time
Have an AI SaaS idea, an MVP that needs improvement, or an existing product that needs new features?
I help founders and businesses build AI-powered SaaS products from idea to production. I can handle the frontend, backend, database, AI integrations, automation, billing, and deployment.
Instead of managing separate developers for different parts of your product, you can work with one developer who understands how everything needs to work together.
I focus on building practical products for real users not just demos.
WHAT I BUILD
• AI-powered SaaS applications
• SaaS MVPs for startups
• AI agents and workflow automation
• Multi-tenant SaaS platforms
• Customer and admin dashboards
• CRM and internal business tools
• AI document processing
• AI content and productivity tools
• Custom web applications
• Improvements and new features for existing products
AI & AUTOMATION
I use AI where it actually adds value to your product.
• OpenAI / GPT, Claude, and DeepSeek
• AI Agents
• RAG systems
• LangChain and LangGraph
• Vector search with Pinecone or Qdrant
• AI document processing
• AI assistants and chat applications
• Multi-step AI workflows
• n8n and Make automation
• Custom API integrations
SAAS FEATURES
I can build the core systems behind your product:
• Multi-tenant architecture
• Authentication and authorization
• Organization workspaces
• Role-based access control (RBAC)
• User and admin dashboards
• Stripe and Lemon Squeezy integration
• Subscription and credit-based billing
• Usage tracking
• Database architecture
• REST APIs and backend services
HOW I WORK
I don't start by blindly writing code.
First, I understand what you're building, who will use it, and what features actually matter for the MVP.
Discovery = Define product goals, core features, user flows, and priorities.
Architecture = Plan the frontend, backend, database, APIs, authentication, AI workflows, integrations, and deployment.
Development = Build through clear milestones with regular updates and GitHub commits.
Testing & Launch = Test core workflows, fix issues, improve performance, and deploy to production.
Post-Launch = Continue with new features, AI improvements, automation, maintenance, and scaling.
WHY WORK WITH ME
Full-Stack Development
I can work across the frontend, backend, database, APIs, and AI integrations, helping keep the product architecture connected.
Product-Focused Approach
I focus on what your users actually need and help prioritize features so you don't spend time and budget building unnecessary things.
Practical AI Implementation
Not every problem needs an AI agent or complex RAG system. I choose the approach that makes sense for your product.
Clear Communication
You'll know what I'm working on, what has been completed, and what comes next.
PROJECT EXPERIENCE
AI Document Analyzer
Built an AI-powered platform that allows users to upload and analyze documents using RAG and vector search. The system helps turn large or complex documents into searchable, AI-accessible information, with Stripe credit-based billing to support a scalable SaaS business model.
Multi-Tenant SaaS Platform
Developed a SaaS platform where multiple organizations can securely manage their own teams, users, and data. Included authentication, role-based access, subscription billing, and workspace management providing the core infrastructure needed to run and scale a subscription-based software product.
AI Workflow Automation
Built automated workflows to reduce repetitive manual work across email processing, CRM operations, and multi-step business tasks. Integrated AI and external APIs to help businesses automate processes and connect different systems into a more efficient workflow.
AI Workflow Automation
Built AI-powered automation for email processing, CRM workflows, multi-step tasks, and third-party API integrations.
TECHNOLOGY
Frontend: Next.js, React, TypeScript, Tailwind CSS, shadcn/ui
Backend: Node.js, Express.js, NestJS, Python, FastAPI, REST APIs, GraphQL
Database: PostgreSQL, MongoDB, Supabase, Prisma, Drizzle
AI: OpenAI, Claude, DeepSeek, LangChain, LangGraph, RAG, Pinecone, Qdrant, AI Agents
Automation: n8n, Make, APIs, Webhooks
Deployment: Vercel, AWS, Docker, Railway, GitHub Actions, CI/CD, VPS
LET'S BUILD YOUR PRODUCT
You don't need to have everything figured out before contacting me.
Send me your product idea, design, requirements document, existing MVP, or GitHub repository.
I can help you decide what to build first, which features your MVP needs, where AI adds real value, which architecture makes sense, and how to take the product to production.
If you're building an AI SaaS product, SaaS MVP, AI agent, workflow automation system, or full-stack web application, send me a brief overview of your project.
My goal is simple: build the right product with clean architecture and make it ready for real users.
Steps for completing your project
After purchasing the project, send requirements so MD Rakibul can start the project.
Delivery time starts when MD Rakibul receives requirements from you.
MD Rakibul works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Analysis & Planning
Understand client needs and goals ,Define project scope, features, and tech stack , Prepare a clear roadmap and timeline
Development & Implementation
Build frontend using React.js/Next.js , Develop backend with Node.js, APIs, and database, Integrate third-party services and ensure responsiveness