You will get Custom AI-Powered SaaS Application: Full-Stack MVP Ready to Launch
Project details
I build custom AI-powered SaaS applications from scratch - not templates, not no-code tools, not ChatGPT wrappers. You bring the product idea, I handle everything: architecture, frontend, backend, AI integration, payments, and deployment.
Every app I build comes with real AI capabilities - intelligent search, content generation, data analysis, conversational interfaces, or what your product needs.
My stack is modern and battle-tested: React/Next.js for fast, responsive frontends. Python/FastAPI or Node.js for scalable backends. OpenAI GPT for AI features. Stripe for payments. PostgreSQL or MongoDB for data. Deployed to Vercel or AWS.
I've shipped production AI applications handling real-time data streams, complex ML pipelines, and thousands of users. You get clean, well-documented source code that you fully own - no vendor lock-in, no ongoing fees to me.
Whether you're a startup founder building your first MVP, a business adding AI to an existing workflow, or an agency needing a reliable builder - I deliver a working, launch-ready product on time with regular progress updates throughout.
One developer. One point of contact. No handoff confusion. Your AI product, built right.
Every app I build comes with real AI capabilities - intelligent search, content generation, data analysis, conversational interfaces, or what your product needs.
My stack is modern and battle-tested: React/Next.js for fast, responsive frontends. Python/FastAPI or Node.js for scalable backends. OpenAI GPT for AI features. Stripe for payments. PostgreSQL or MongoDB for data. Deployed to Vercel or AWS.
I've shipped production AI applications handling real-time data streams, complex ML pipelines, and thousands of users. You get clean, well-documented source code that you fully own - no vendor lock-in, no ongoing fees to me.
Whether you're a startup founder building your first MVP, a business adding AI to an existing workflow, or an agency needing a reliable builder - I deliver a working, launch-ready product on time with regular progress updates throughout.
One developer. One point of contact. No handoff confusion. Your AI product, built right.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$1,499
|
Standard
$3,499
|
Advanced
$7,999
|
|---|---|---|---|
| Delivery Time | 14 days | 28 days | 42 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 5 | 12 | 20 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$449
Additional Revision
+$99
Additional Page
(+ 1 Day)
+$99
Content Upload
(+ 5 Days)
+$399
Extra AI feature integration
(+ 5 Days)
+$499
Custom admin dashboard
(+ 7 Days)
+$599
Stripe subscription billing setup
(+ 5 Days)
+$399Frequently asked questions
About Gaurav
AI/ML Engineer & Full Stack Developer | RAG | GPT Integration | Mobile
Noida, India - 1:43 pm local time
What I bring to your project:
Full Stack Development -> End-to-end product development with React Native (Expo), React, NodeJS/Express, FastAPI, and MongoDB. I architect scalable systems that handle real users and real traffic.
AI Engineering & LLM Integration -> Hands-on experience building production AI pipelines with GPT-5, computer vision, OCR, and multimodal processing. I design prompt systems that deliver consistent, high-quality results.
RAG (Retrieval Augmented Generation) -> Custom RAG implementations for domain-specific AI assistants, including vector stores, semantic search, and context-aware response generation.
Mobile App Development -> Native-quality cross-platform apps using React Native & Expo SDK 54, with in-app purchases (iOS & Android), deep linking, and offline-first architecture.
Cloud & DevOps -> AWS (Elastic Beanstalk, S3, ElastiCache), Docker, Redis, real-time streaming (SSE), and production monitoring with Sentry.
Recent project highlights:
- Built an AI-powered video analysis platform processing thousands of videos monthly with GPT vision models
- Developed a real-time product extraction pipeline with parallel detection, deduplication, and affiliate integration
- Created a multi-region mobile app with subscription billing, device-based auth, and quota management
- Implemented production RAG systems for AI assistants with custom knowledge bases
- I write clean, maintainable code with proper error handling, security best practices, and comprehensive documentation. Let's build something great together.
Completed Projects -
1. AI-Powered Video Analysis Platform - Built a full-stack mobile application that uses GPT vision models to analyze video content in real-time. The system processes videos from multiple social platforms, extracts meaningful data using computer vision and OCR, deduplicates results using AI, and presents actionable insights to users.
Tech -> React Native, Expo, FastAPI, Python, GPT-4/5, OpenAI Vision API, MongoDB, Redis, AWS
2. Production RAG System for AI Assistant - Designed and implemented a Retrieval Augmented Generation system that powers an intelligent assistant. Features include custom knowledge base management, semantic search, context-aware responses, and streaming output for real-time interaction.
Tech -> Python, FastAPI, OpenAI API, Vector Embeddings, Redis, SSE Streaming
3. Multi-Region Subscription Mobile App - Developed a cross-platform mobile app with complex subscription management supporting multiple regions and currencies. Implemented device-based authentication, in-app purchases for iOS and Android, quota management with timezone-aware calculations, and real-time WebHook processing for subscription events.
Tech -> React Native, Expo SDK 54, NodeJS, Express, MongoDB, Apple StoreKit, Google Play Billing
4. Real-Time Data Processing Pipeline - Architected a scalable async job processing system with SSE-based progress streaming, circuit breakers for external API resilience, distributed locking, and parallel processing workers. Handles thousands of requests daily with 99.9% uptime.
Tech -> FastAPI, Python asyncio, Redis, Docker, AWS Elastic Beanstalk
Steps for completing your project
After purchasing the project, send requirements so Gaurav can start the project.
Delivery time starts when Gaurav receives requirements from you.
Gaurav works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery call and requirements review
I review your product idea, features list, and brand assets. I ask clarifying questions to fully understand scope, user flows, and AI integration points. We align on deliverables and timeline.
Architecture and technical planning
I design the database schema, API structure, AI pipeline plan, and UI wireframes. You review and approve the technical plan before any code is written. Changes are easy at this stage.