Mahendra Avudiyappan

AI / ML Engineer

AI / ML Engineer, helping organizations unlock insights from data using machine learning and AI.

Mahendra Avudiyappan

About Me

I’m an AI / ML Engineer based in Chicago who enjoys building practical machine learning solutions that help organizations make better decisions with data. My work focuses on applied machine learning, where I take real-world datasets and turn them into reliable, interpretable models. I have hands-on experience designing end-to-end ML pipelines, including data cleaning, feature engineering, model training, evaluation, and interpretation. A key part of my work has been building anomaly detection systems for healthcare workflows, where I used deep learning models to identify delays, inconsistencies, and operational patterns in complex processes.

I also work with GenAI and LLM-based applications, evaluating open-source language models and building Retrieval-Augmented Generation (RAG) systems to produce more accurate and context-aware outputs. I’m currently seeking entry-level AI / ML Engineer roles where I can continue learning, collaborate with experienced teams, and contribute to building data-driven, real-world AI systems.

1+

Years Experience

30+

Data Sets Analyzed

Professional Experience

AI / ML Engineer

Research Assistant (DePaul University)
Jun 2025 - Dec 2025 • 7 months
ML engineer Intern
Jul 2023 - Dec 2023 • 6 months
20%↑
Accuracy
80%↑
Issues Fixed
40%↑
Efficiency

Role Overview

Led applied machine learning initiatives to improve data reliability and support real-time analytics. Standardized and validated large-scale healthcare workflow data using automated checks. Designed anomaly detection and feature engineering pipelines with Python and PyTorch to improve predictive accuracy. Built and evaluated LLM and GenAI solutions, including RAG-based workflows, and streamlined experimentation using MLflow and containerization.

Key Achievements

↑ 30% ETL Performance Improvement

Optimized data preprocessing pipelines across 115K+ healthcare records

Standardized 110K+ Records

Improved data reliability using automated validation and drift checks

↑ 8.9 Macro-F1 & ↑ 15% Recall

Enhanced anomaly detection using PyTorch MLP with focal loss

↓ 22% False Positives

Improved anomaly precision through class weighting and feature design

40+ Predictive Features Engineered

Temporal, workload, insurance, and rolling-window features

MLflow + Docker Pipeline

↑ 11% throughput and ↓ 18% verification queue time

LLM & RAG Systems Built

Improved response accuracy and ↓ 50% latency in GenAI applications

↑ 15–20% Forecast Accuracy

Applied ML and time-series modeling for budget planning systems

Industry Tools & Platforms

Programming

Python SQL

Machine Learning

PyTorch TensorFlow Scikit-learn Feature Engineering

Anomaly Detection

Temporal Features Class Imbalance Handling Focal Loss SHAP

GenAI & LLMs

LLaMA DeepSeek RAG Hugging Face

MLOps & Deployment

MLflow Docker Azure REST APIs

Data Processing

Pandas NumPy Apache Spark Data Validation

Projects

Pharmacy Anomaly Detection

Real-Time Anomaly Detection in Pharmacy Workflows

Built an end-to-end machine learning system to detect delayed and incomplete prescription workflows using 115K+ real-world healthcare records. Improved macro-F1 by 8.9 points and reduced false positives by 22% using a PyTorch MLP with focal loss.

Python PyTorch Anomaly Detection Feature Engineering MLflow Docker
LLM Recommendation Chatbot

LLM-Powered University Recommendation Chatbot

Designed and evaluated LLM-based recommendation systems using LLaMA and DeepSeek models. Integrated Retrieval-Augmented Generation (RAG) to improve response accuracy and reduce latency by 50%.

LLMs RAG GenAI Hugging Face REST API
Brain Tumor Detection

Brain Tumor & Alzheimer Detection Using Deep Learning

Developed CNN and UNet-based deep learning models for MRI image classification and segmentation, achieving 97.36% accuracy. Published results in a peer-reviewed journal.

CNN UNet Computer Vision Deep Learning
Budget Forecasting ML

Budget Forecasting & Financial Analytics

Built supervised ML and time-series models to improve budget forecasting accuracy by up to 20%, supporting data-driven financial planning for $100K+ budgets.

Machine Learning Time Series Regression Financial Analytics

Technical Skills

Programming

Python
SQL
JavaScript
HTML5
CSS

Machine Learning & Deep Learning

PyTorch
TensorFlow
Scikit-learn
CNN / UNet
Feature Engineering

LLMs & GenAI

LLaMA
DeepSeek
RAG
Hugging Face

Data & ETL

Pandas
NumPy
Apache Spark
Data Cleaning & Validation

MLOps & Deployment

MLflow
Docker
Azure
REST APIs
CI/CD

Tools

Git
GitHub
VS Code
Jira / Slack

Drop me a line

Let’s Connect!

I’m always open to collaborating on impactful AI and machine learning projects or exploring new opportunities in applied data science. Whether you have a problem to solve or would like to connect, feel free to reach out—I’d be glad to chat.

mahendraavudiyappan@gmail.com
Chicago, Illinois, USA
+1 (312) 545-9342

© 2025 by Mahendra Avudiyappan. All rights reserved.