# Sanjai Kumar

Sanjai Kumar is a remote worker on Himalayas, AI Intern at NSIC, based in India.

Source: https://himalayas.app/@sanjaikumar3

```text
Generative AI Engineer building a financial-document RAG system with 86% retrieval accuracy and an LLM security-testing framework.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | India |
| Authorized to work in | India |
| Salary expectations | 372k+ INR |
| Job categories | Generative AI Engineer, Agentic AI Engineer |
| Skills | Generative AI, Large Language Models, RAG, AI Agents, Agentic AI, Prompt Engineering, RAG Evaluation, Guardrails AI, Embeddings, Semantic Search, Document Chunking, Structured JSON outputs, Rule Based Evaluation, Report Automation, Python |
| LinkedIn | https://linkedin.com/in/sanjaikumar-perumal |
| GitHub | https://github.com/sanjaikumar-perumal |

## What I'm looking for

```text
I’m seeking a GenAI or Agentic AI Engineer role where I can build reliable, production-ready LLM systems.
```

## About

```text
At NSIC, I built a Python interview assistant with modules for technical explanations, question generation, and interview-answer evaluation. It returns structured feedback with scores, strengths, and suggestions.

I engineered the AI Financial Research Assistant, a RAG pipeline that searches 50 financial reports using embeddings and ChromaDB. On the project test set, it reached 86% retrieval accuracy and reduced hallucinated responses by 82%.

I also developed RAG Guardian, a Python framework for testing LLM applications against prompt injection, unauthorized access, unsupported responses, and valid-answer scenarios. With defenses enabled, it passed all four tests and generated reports with evidence and severity for each result.

I work with Python, LangChain, LangGraph, and FastAPI to build and evaluate LLM applications. I’m seeking a GenAI or Agentic AI Engineer role focused on reliable, production-ready LLM systems.
```

## Experience

### AI Intern

NSIC. Dec 2024 - Nov 2025

```text
Built a GenAI-powered interview assistant in Python with modules for technical explanations, dynamic question generation, and answer evaluation. Designed structured JSON outputs and implemented request validation and error handling for reliable processing.
```

Skills: Python, Groq-API, LLM, JSON, Dotenv

## Education

### Vel Tech High Tech Engineering College, Anna University

Bachelor of Engineering, Electronics and Communication Engineering. 2022 - Present. Grade: 8.07

```text
Pursuing a Bachelor of Engineering in Electronics and Communication Engineering with a CGPA of 8.07.
```

### HackerRank

SQL (HackerRank), SQL

```text
Earned a SQL certification from HackerRank.
```

### HackerRank

Python (HackerRank), Python

```text
Earned a Python certification from HackerRank.
```

### Simplilearn

Prompt Engineering (Simplilearn), Prompt Engineering

```text
Completed a Prompt Engineering certification from Simplilearn.
```

## Tech stack

- AWS IAM
- Amazon EC2
- Amazon S3
- GitHub
- NumPy
- Pandas
- React
- JavaScript
- Python
- Streamlit
- FastAPI
- pytest
- Git
- SQL
- Google Colab
- Hugging Face
- LangChain
- Ollama
- ChromaDB
- Google Gemini API
- Guardrails AI
- Faiss
- LangGraph
- Matplotlib
- AWS
- REST APIs

To contact Sanjai, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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