AI-Powered Application & Backend Developer

I am looking for freelance projects involving **AI application development, Python backend development, RAG systems, voice AI, chatbots, API development, and business automation**.

I specialize in building practical AI-powered applications using:

- Python & FastAPI
- AI agents and conversational AI
- RAG and knowledge retrieval systems
- PostgreSQL, pgvector & Redis
- REST APIs and WebSockets
- Speech-to-Text and Text-to-Speech
- Voicebots and telephony integrations
- WhatsApp and Google Calendar integrations
- SQLAlchemy & Alembic
- Automated testing with pytest
- Git & GitHub

### What I can build

**AI & RAG**
- Custom AI chatbots
- Document-based RAG systems
- Knowledge-base assistants
- AI agents
- Business AI automation

**Voice AI**
- AI receptionists
- Multilingual voice assistants
- Voicebots
- Speech-to-text / text-to-speech systems
- Real-time audio applications
- Telephony integrations

**Backend Development**
- FastAPI applications
- REST APIs
- WebSocket applications
- PostgreSQL database systems
- Redis-based services
- Third-party API integrations
- Authentication and business logic

**Automation**
- Appointment booking systems
- Customer notification systems
- WhatsApp automation
- Calendar integrations
- Lead capture
- Post-call processing

### Relevant Project

I developed **Vaani**, a multilingual AI voice receptionist backend supporting English, Hindi, and Hinglish.

The project combines FastAPI, RAG-based knowledge retrieval, local speech processing, PostgreSQL/pgvector, Redis, WebSockets, Exotel telephony, WhatsApp integration, Google Calendar, Docker, and automated testing.

I am interested in working with clients who need a **custom AI solution rather than a basic chatbot**, including startups, businesses, researchers, and developers looking to integrate AI into an existing product.

I can work on both **complete projects and individual development tasks**, including debugging, API development, AI integration, backend development, and deployment preparation.