Nitish — Data Scientist & ML Engineer

About

Turning data into
decisions.

Nitish Rohilla

Associate Data Scientist

I'm a Data Scientist & ML Engineer based in Gurugram, India, currently working at SkillUpTech. I specialize in end-to-end AI solutions — from NLP pipelines and LLM fine-tuning to cloud deployments on AWS and GCP.

I hold a B.Tech in Computer Engineering (Data Science) from J.C. Bose University, YMCA Faridabad. I'm driven by the challenge of turning messy, real-world data into clear, actionable insights.

Outside of work, I contribute to open-source game mods, build personal projects, and always have something new in the queue to learn.

Get in touch Resume

Core Skills

Python

SQL

ML / Deep Learning

LLM Fine-Tuning / RAG

JavaScript / C++

1yr+

Professional ML experience

Projects shipped

Cloud platforms (AWS, GCP, n8n)

Experience

Where I've worked.

March 2025 — March 2026

SkillUpTech

Associate Data Scientist

Spearheaded end-to-end design and deployment of production-grade AI solutions, driving measurable business impact across NLP, LLM fine-tuning, and intelligent automation.

n8n AI Agent Automation: Architected multi-agent workflows with deep expertise in JSON schema design, agent chaining, and tool/memory integration. Built a fully autonomous Password Reset Agent with secure OTP generation and token-based authentication.

GCP Vertex AI — Gemini Fine-Tuning & RAG: Fine-tuned a Gemini model on Google Cloud Vertex AI for domain-specific tasks. Designed a RAG agent integrating embedding models and vector search — significantly reducing hallucination rates.

AWS Cloud AI: Leveraged SageMaker for scalable spaCy model training and Lambda for serverless inference endpoints — enabling cost-efficient, auto-scaling deployments.

Projects

Things I've built.

+5% BERTScore F1

Qwen 2.5 LLM Fine-Tuning with QLoRA

Fine-tuned a Qwen 2.5 0.5B instruction model on local hardware using QLoRA (4-bit quantization + LoRA adapters via PEFT/TRL) on the DialogSum conversational summarisation dataset. Achieved a +5% gain in BERTScore F1 (0.8381 → 0.8805) — demonstrating resource-efficient LLM specialization.

PyTorch QLoRA PEFT / TRL HuggingFace BERTScore

n8n AI Agent & GCP Vertex RAG

Designed and deployed a multi-agent password reset workflow in n8n with OTP generation and token auth. Separately, built a Gemini-based RAG agent on GCP Vertex AI with vector search — significantly reducing LLM hallucinations.

n8n GCP Vertex AI Gemini RAG

Insurance Claim Prediction

ML web application predicting insurance claim approvals using Decision Trees and Random Forest. Achieved 89% accuracy — a 20% improvement over baseline predictions. Visualized with Matplotlib.

Random Forest Pandas Matplotlib

Real-Time Chat Application

Live messaging platform with bidirectional WebSocket communication via Socket.IO. Flask backend, dynamic HTML/JS frontend. Message latency consistently under 200ms.

Socket.IO Flask WebSockets Node.js

Handwritten Digit Recognition

CNN-based MNIST digit classifier achieving 97% test accuracy. Used TensorFlow/Keras with Logistic Regression and SVM baselines. Supports real-time input recognition.

TensorFlow Keras CNNs

Sentiment Analysis

NLP model detecting depressive/negative sentiment in social media posts. NLTK preprocessing, Logistic Regression, WordCloud visualizations. 82% accuracy on 10,000+ tweets.

NLTK NLP WordCloud

Sales Analysis & Forecasting

EDA on historical sales data using Pandas, Seaborn, and Matplotlib. Interactive dashboards built in Tableau and Power BI. Resulted in a 15% forecast accuracy improvement.

Pandas Tableau Power BI EDA

Hi, I'm Nitish

Turning data into
decisions.

Core Skills

Tools I work with.

Where I've worked.

Associate Data Scientist

Things I've built.

Let's work together.

Hi, I'm Nitish

Turning data intodecisions.

Core Skills

Tools I work with.

Where I've worked.

Associate Data Scientist

Things I've built.

Let's work together.

Turning data into
decisions.