You will get Launch a Full-Stack AI SaaS App from 0 to 1 with React & GPT


Project details
I’ll build your AI-powered SaaS app from 0 to 1 using React, Express, and GPT. With 10+ full-stack apps built, I deliver clean, scalable code fast—perfect for startup founders and solo builders ready to launch.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance OptimizationWhat's included
| Service Tiers |
Starter
$250
|
Standard
$950
|
Advanced
$1,900
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 18 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 4 | 8 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Custom Domain + Deployment to Vercel/AWS
(+ 1 Day)
+$150
API Documentation (Swagger/Postman)
(+ 1 Day)
+$100
Extra Revision
(+ 1 Day)
+$50Frequently asked questions
About Sean
Full stack Engineer focused on Frontend development
Irvine, United States - 10:37 pm local time
Hi, I'm Yonghyun Jin—a seasoned full-stack developer with a passion for building AI-driven SaaS applications. I've co-founded and led the development of platforms that streamline financial operations for businesses. With over 10 full-stack projects under my belt,
🔧 Core Competencies:
- Full-Stack Development: Expertise in React, Next.js, and Tailwind for responsive front-end interfaces, coupled with FastAPI and Python for robust back-end solutions.
- AI Integration: Implemented OCR and GPT systems to automate receipt-to-transaction mapping, reducing manual input by 80%.
- Fintech Solutions: Integrated Plaid for real-time transaction syncing, efficiently handling over 2.5K items per user.
- DevOps & Deployment: Skilled in deploying scalable applications using Docker and AWS ECS, ensuring high availability and performance.
- Open Source Contributions: Actively contributed to GitLab and MUI Toolpad, enhancing frontend performance and code maintainability.
🌟 Why Collaborate with Me?
- Proven track record in delivering end-to-end solutions that align with client goals.
- Strong communication skills with experience collaborating across time zones.
- Commitment to clean, maintainable code and best development practices.
Let's work together to bring your vision to life with scalable, efficient, and user-friendly applications.
Steps for completing your project
After purchasing the project, send requirements so Sean can start the project.
Delivery time starts when Sean receives requirements from you.
Sean works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Review & Tech Stack Confirmation
I review your submitted requirements and confirm the stack (React, Express, GPT, etc.) based on your goals and timeline.
UI/UX + Backend Architecture Setup
I set up the frontend layout and backend structure, including routing, authentication, and database schemas.


