You will get an AI SaaS MVP with React, NestJS and LLM integration
Project details
I help startups and founders turn ideas into AI-powered MVPs and scalable backend systems.
With experience building full-stack products using React, React Native, NestJS, PostgreSQL and LLM integrations, I focus on delivering production-ready features that can grow with your product.
A recent example is MonAmiChef, an AI cooking assistant that generates personalized recipes based on user preferences and nutrition goals. The system uses a shared backend architecture supporting both mobile and web clients and exposes an API for external integrations.
In this project, I can help you build:
• AI-powered features (chatbots, generation, automation)
• scalable backend APIs using NestJS
• AI SaaS MVPs ready for launch
• integrations with OpenAI or Gemini
• clean architecture and reliable AI workflows
My goal is to deliver clean, maintainable code and a working system you can actually build on.
With experience building full-stack products using React, React Native, NestJS, PostgreSQL and LLM integrations, I focus on delivering production-ready features that can grow with your product.
A recent example is MonAmiChef, an AI cooking assistant that generates personalized recipes based on user preferences and nutrition goals. The system uses a shared backend architecture supporting both mobile and web clients and exposes an API for external integrations.
In this project, I can help you build:
• AI-powered features (chatbots, generation, automation)
• scalable backend APIs using NestJS
• AI SaaS MVPs ready for launch
• integrations with OpenAI or Gemini
• clean architecture and reliable AI workflows
My goal is to deliver clean, maintainable code and a working system you can actually build on.
Programming Languages
TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$450
|
Advanced
$950
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | - | |
Content Upload | - | - | - |
Responsive Design | - | - | |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$60 - $250
API documentation + setup guide
+$60Frequently asked questions
About Lenny
AI SaaS Developer | React, NestJS & LLM Integration for Production App
Creteil, France - 9:50 am local time
I help founders and startups go from idea to scalable product with clean architecture, strong validation layers, and reliable deployments.
What I specialize in:
- Backend Architecture
- NestJS + PostgreSQL
- Secure REST APIs
- Data validation with Zod
- Auth, roles & scalable systems
- Frontend & Mobile
- React / React Native
- TypeScript-first development
- Clean UI with performance focus
- AI Integration
- OpenAI, Anthropic, Gemini APIs
- Structured outputs
- Reliable AI pipelines for real-world apps
- DevOps & Deployment
- Docker
- CI/CD pipelines
- Supabase deployments
I focus on shipping fast without compromising structure or long-term scalability.
Currently available for:
- SaaS MVP development
- AI feature integration
- Backend refactoring
- Technical reinforcement for growing teams
Let’s build something solid.
Steps for completing your project
After purchasing the project, send requirements so Lenny can start the project.
Delivery time starts when Lenny receives requirements from you.
Lenny works on your project following the steps below.
Revisions may occur after the delivery date.
Discussion
We review your project requirements, goals, and technical constraints to define the best implementation approach.
Architecture & Setup
I set up the project structure, backend architecture, and required integrations.