AI/ML & Data Science Leader

Driving AI solution and execution at enterprise scale.

As Senior Manager of Data Science at Lowe’s, I direct the roadmap and deployment of advanced ML, Generative, and Agentic AI to transform complex retail operations and deliver measurable business value.

Balaji Nagarajan

About me

I transform complex data science and AI into enterprise-ready products.

With over 19 years in data science and AI, my expertise spans from traditional machine learning and MLOps to orchestrating modern, autonomous AI frameworks. My foundation was built on large-scale analytics ecosystems like Hadoop and Spark, which evolved into a deep focus on the underlying architecture: designing enterprise data platforms and the intelligent data products they power.

Building on this foundation, my current work focuses on driving the AI/ML strategy and execution across store operations, store inventory management, and asset protection to deliver measurable business outcomes.

  • Author of Breaking Into AI
  • Published researcher on applied AI
  • M.Tech, Data Science & Engineering, BITS Pilani

Core expertise

Data ScienceMachine LearningGenerative & Agentic AILLMs & RAGMLOpsAI/ML Strategy & Leadership

Also work with

TensorFlowPyTorchVertex AIPythonGCPAzureKubernetesDockerClouderaApache SparkKafka & StreamingAirflowBigQueryDelta LakeApache IcebergDruidDatabricksData ArchitectureJavaMicronautReactMobile Apps
0+
Years of experience
0+
Countries with solutions deployed
0+
Enterprise AI/ML products
0
Published book

Areas of expertise

AI Strategy & Team Leadership

Directing high-performing data science teams, defining enterprise AI/ML roadmaps, and bridging the gap between complex technical architecture and strategic business outcomes.

Generative & Agentic Ecosystems

Orchestrating autonomous execution loops, Text-to-SQL validation frameworks, and LLM-as-a-Judge quality systems to power intelligent enterprise applications.

Enterprise MLOps & Production AI

Scaling machine learning lifecycles and resilient model deployment strategies across enterprise platforms, leveraging Vertex AI, Kubeflow, and MLflow.

Retail Analytics & Business Intelligence

Delivering metadata-driven business intelligence, advanced forecasting, and automated insights that drive store-controllable KPIs and asset protection.

Scalable Data Architecture

Designing robust streaming and batch processing ecosystems utilizing modern lakehouse and data-mesh paradigms to power decision-ready products.

Cloud Infrastructure Strategy

Architecting distributed, highly available, and cost-optimized data processing infrastructures across GCP, Azure, and Databricks.

Work that shipped

Optimization at Scale

AI-Powered Space Optimization

Directed the architecture of a machine-learning engine that optimizes product placement and shelf-space utilization across a national retail fleet. I orchestrated a heavily parallelized, distributed compute pipeline that unlocked enterprise-scale optimization, directly improving space utilization and sales performance. Backed by published research.

Read the paper →
Generative AI

Conversational Analytics Agent

Architected a Generative AI agent powered by advanced Text-to-SQL validation frameworks, enabling business leaders to query enterprise data warehouses in natural language. It democratized data access, turning complex metadata into instant, actionable insights for non-technical teams.

AI Quality

GenAI Quality Platform

Championed and deployed a unified AI quality platform built on an LLM-as-a-Judge framework. The automated system proactively surfaces quality and reliability issues, ensuring safety and compliance across production Generative AI applications.

ML in Retail

AI-Driven Replenishment

Scaled predictive machine-learning models that intelligently prioritize shelf replenishment. The initiative replaced manual, scan-based methods with automated forecasting, streamlining complex operational workflows across a large-scale retail footprint.

Real-time Analytics

Real-Time Store Performance Platform

Led the development of a 360° store-performance platform powered by real-time POS streaming, establishing a single source of truth for store-controllable KPIs and driving data-informed operational decisions across the retail fleet.

My journey

Experience

Mar 2025 - Present
Senior Manager, Data Science
Lowe’s Inc. · Charlotte, NC
Feb 2018 - Mar 2025
Principal Data Engineer
Lowe’s Inc. · Charlotte, NC
Apr 2010 - Feb 2018
Big Data Solution Architect
Nielsen · Chicago, IL
Aug 2006 - Apr 2010
Sr. Software Engineer
HTC Global Services · Chennai, India

Education

2023 - 2024
M.Tech, Data Science & Engineering
BITS Pilani, India
2008 - 2009
MBA
University of Madras, India
2002 - 2006
B.Tech, Information Technology
Anna University, India

My book

Breaking Into AI cover Breaking Into AI

Breaking Into AI

The Complete Roadmap to Becoming an AI Engineer from Scratch: LLMs, Agents, RAG, and a 90-Day Action Plan for Software and Data Engineers.

A practical, no-fluff roadmap for software and data engineers who want to become AI engineers. It covers LLMs, agents, RAG, and a concrete 90-day action plan drawn from nearly two decades on the front line of every major platform shift.

View on Amazon →

Let's connect

Always glad to exchange ideas on AI, data, and building teams - or to talk through an interesting problem. Find me on LinkedIn.

Connect on LinkedIn →