Open to opportunities

Nikhil Kumar

@nikhilkumar30

Message

I build production RAG, voice AI, and scalable FastAPI systems for enterprise applications.

India

Message

What I'm looking for

I'm looking to build production-grade generative AI, RAG, voice AI, and scalable backend systems where I can solve real-world problems with modern AI platforms.

I've built enterprise AI systems at Vylt Technologies and QuyTech Technologies, including RAG chatbots, voice ordering automation, and real-time conversational assistants. My work has supported document search across 50K+ documents and 1K+ concurrent users.

At Vylt, I developed LangChain and OpenAI-powered document search, designed asynchronous FastAPI microservices that reduced latency by 35%, and implemented Redis caching and retrieval optimization. I also delivered vehicle-hire prediction, logistics optimization, and computer-vision pipelines for warehouse safety and theft detection.

Most recently, I built an AI voice ordering system using GPT-4o-mini function calling, FastAPI, Redis, MongoDB, Twilio, and ElevenLabs. I enjoy applying AI research, competitive programming, and problem-solving to build reliable production systems.

Experience

Work history, roles, and key accomplishments

AI Engineer

QuyTech Technologies Private Limited

Jan 2026 - May 2026 (4 months)

Built AI voice ordering system using FastAPI, GPT-4o-mini function calling, Redis sessions, and MongoDB for conversational food ordering automation. Integrated Twilio and ElevenLabs for real-time order automation.

fastAPI GPT 4o Redis MongoDB Twilio ElevenLabs

AI Engineer

Vylt Technologies Pvt. Ltd.

Jan 2023 - Jul 2025 (2 years 6 months)

Developed enterprise-grade RAG chatbot using LangChain, OpenAI APIs, FAISS, and Azure AI services for intelligent document search across 50K+ documents. Designed FastAPI microservices and asynchronous processing pipelines reducing response latency by 35%.