Mariselvam Murugesan
Senior Technical Lead
Chennai
Summary
Staff Software Engineer with 15+ years of experience in product engineering, platform architecture, and cloud-native system design. Strong expertise in building large-scale distributed systems, workflow platforms, and enterprise microservices across banking and retail domains. Currently focused on AI-driven platforms, Agentic AI, and intelligent automation, with proven experience in designing LLM + RAG-based systems, chaos engineering platforms, and OCR solutions. Recognized for driving architectural innovation, improving system resilience, and enabling engineering productivity at scale.
Overview
16
16
years of professional experience
6
6
years of post-secondary education
Work History
Staff Software Engineer
Walmart Global Tech India
Chennai
05.2024 - Current
- Leading AI-driven platform innovation and resilience engineering, building intelligent systems aligned with enterprise-scale efficiency, reliability, and automation goals
- Designed and built a ServiceNow Code Review AI Assistant (Agentic AI) that automates update-set governance using LLM-based reviewer agents and orchestration workflows, delivering context-aware feedback and reducing manual review effort and turnaround time by ~70%; recognized with Excellence Award and hackathon win
- Ideated and delivered Chaos-IQ, an Architect Forward (ATF)-selected AI chaos engineering platform, leveraging LLMs + RAG to convert historical incidents (ServiceNow, Confluence) into executable chaos experiments, improving system resilience and recovery readiness
- Designed advanced retrieval pipeline including:Embedding enrichment & metadata summarization for signal-rich vector representations
Semantic N-gram filtering for domain-aware retrieval
MMR-based reranking to balance relevance and diversity
- Established evaluation framework using RAG metrics (Precision, Recall, MRR) combined with automated + manual validation pipelines, and enforced strict YAML output validation to minimize hallucination and enable direct execution
- Led the delivery of RACE, an AI-powered OCR and document extraction platform on Azure Document Intelligence, replacing legacy Captiva systems and driving significant cost and efficiency improvements
- Designed and implemented polyglot microservices (Java, Python, .NET) for scalable, fault-tolerant AI platforms
- Driving GenAI adoption and engineering excellence by leading architecture reviews, mentoring engineers, and enabling teams to build AI-first, resilient, and observable systems
Senior Software Engineer
Walmart Global Tech India
Chennai
04.2022 - 04.2024
- Owned the design and development of a cloud-native workflow/process engine (Java, Spring Boot) supporting 4,000+ enterprise workflows across finance domains (AP, AR, GL), enabling scalable orchestration of complex business processes
- Integrated workflow platform with enterprise systems (SAP and others), enabling seamless end-to-end automation across distributed services
- Led the modernization of IBM BPM UI by building a React-based workflow management platform, contributing to full decommissioning of legacy BPM systems and driving significant licensing and infrastructure cost savings
- Applied distributed systems and cloud-native architecture principles to ensure high availability, scalability, and operational reliability of the platform
- Designed and delivered a Zero/No-Code API Test Automation Framework, enabling teams to define and execute API tests without manual coding, significantly improving developer productivity and reducing maintenance effort
- Drove Engineering Excellence initiatives including:technical debt reduction
vulnerability remediation
performance optimization
- Led cloud cost optimization efforts, achieving approximately $300K annual savings through benchmarking, right-sizing, and system performance improvements
- Mentored engineers and conducted architecture/design reviews, elevating engineering standards and enabling faster delivery across teams
Software Engineer III
Walmart Global Tech India
Chennai
03.2021 - 04.2022
- Led a team of 8 engineers in a large-scale modernization initiative, migrating legacy mainframe and .NET systems to 20+ Java Spring Boot microservices on the Walmart Cloud Native Platform
- Designed and delivered cloud-native microservices architecture with a focus on scalability, high availability, reliability, and fault tolerance, following modern distributed system principles
- Played a key role in data modernization, migrating from DB2 to Azure Cosmos DB and Azure SQL, and designing integrations using Azure Blob Storage and Azure Data Lake
- Enabled a scalable platform supporting 4,000+ enterprise workflows across finance domains (AP, AR, GL), improving flexibility and operational efficiency
- Collaborated across UI, platform, product, and architecture teams to design and integrate dynamic form and workflow designers on top of IBM BPM, enabling configurable business processes
- Ensured production stability and smooth migration through strong cross-team coordination, system validation, and operational readiness practices
Senior Technical Leader
Intellect Design Arena Ltd.
Chennai
05.2017 - 03.2021
- Led architecture and development of iTurmeric, a cloud-native, API-first low-code enterprise integration platform for BFSI domain, enabling rapid development of microservices and enterprise applications
- Designed and integrated BPMN 2.0-based workflow engine using JBPM (v7.6.0), building custom wrappers around runtime components (KieBase, KieSessions, RuntimeEnvironment) and extending persistence to support pluggable relational databases
- Implemented transaction management using Bitronix Transaction Manager, ensuring reliable execution of distributed workflows
- Developed execution tracking, logging, and monitoring components, and exposed core workflow operations (start, claim, complete, etc.) as REST APIs, along with dashboard enquiry APIs
- Designed and built an ORM-based domain framework enabling dynamic mapping of virtual objects to relational tables and automatic generation of CRUD REST APIs, significantly accelerating development
- Implemented event-driven architecture using Apache Kafka, enabling asynchronous workflow execution and improving system scalability
- Owned API and web security architecture, integrating OAuth 2.0 flows and message-level security (RSA, SHA, AES, PGP), and leveraging Keycloak for IDAM
- Designed and developed APIExchange Portal using Swagger, providing centralized API documentation and improving developer experience across products
- Led and mentored a team of 8 engineers, providing technical direction, architecture guidance, and implementation reviews
- Supported customer implementations and production deployments for major banking clients including Yes Bank, IDBI Bank, HUDCO, and Swaziland Bank
Team Lead
Intellect Design Arena Ltd.
Chennai
07.2015 - 04.2017
- Led a team of 5 engineers in building an online banking application for credit card management for Majid Al Futtaim (Dubai), delivering across desktop, mobile, and tablet platforms
- Provided technical leadership, task planning, and day-to-day coordination, ensuring timely delivery and quality across the full development lifecycle
- Designed and developed application features using Angular and Cordova (frontend) and Java with Oracle (backend), supporting critical banking operations
- Collaborated closely with business analysts and stakeholders to translate requirements into scalable technical solutions
- Played an active role across the entire SDLC, including requirements analysis, development, testing coordination, and user demonstrations
- Supported User Acceptance Testing (UAT) on-site in Dubai and worked directly with customers to resolve issues, ensuring smooth system rollout and production stability
- Designed and developed a online desktop ,mobile and tablet banking application for credit card management services called ENAJM and lead 3 personnel working on Angular , HTML, CSS , Java, Cordova and Oracle for Majid Al Futtaim, Dubai (NBFC Customer)
- Collaboratively worked with business analyst and users to understand and implement requirements and delivered them on-time with good quality
- Have good knowledge in credit card management services
- Involved in various phase of SDLC life cycle - Requirement Gathering & Analysis , Design , Implementation , Testing , Deployment and Production Support.
- Resolved production issues on-time and providing solution/workaround to user queries
- Have provided demo of the product/feature to Users & Support team for better understanding and enabling support team for faster resolution
Software Developer
Intellect Design Arena Ltd.
Chennai
05.2010 - 06.2015
- Contributed to the development of Small and Medium Enterprise (SME) and Loan Management systems for banking clients, supporting core lending operations
- Designed and developed business-critical UI screens using the Struts framework, enabling accurate data capture and workflow execution for enterprise banking applications
- Implemented and maintained Oracle PL/SQL components (packages, procedures, functions) to support backend processing and system integrations
- Actively involved in application deployment and environment support across WebSphere, WebLogic, JBoss, and Apache Tomcat servers
- Participated in database migration and performance optimization initiatives, improving system stability and responsiveness in production environments
- Worked across the full SDLC, including development, testing support, deployment, and production issue resolutionHave good knowledge in Small Medium Enterprise System and Loan Management System Banking domain for HDFC Bank
- Designed and developed various UI screens like Master/Authorization/Entry to capture data from users using struts framework
- Have strong experience in Relational Database and Involved in System Performance Optimization
- Hands-on in writing Packages, Functions, Stored Procedures and Anonymous Procedures Involved in Oracle Database migration
- Hands-on in configuring and deploying applications in WebSphere server,Weblogic , Jboss and Tomcat
Education
Bachelor of Technology - Computer Engineering
SRM University
Chennai 06.2011 - 12.2014
Diploma - Computer Science
Ramakrishna Mission Polytechnic College
Chennai 06.2007 - 04.2010
Skills
AI & Intelligent Platforms : Agentic AI Large Language Models (LLMs) Retrieval-Augmented Generation (RAG) Prompt & Model Evaluation Chaos Engineering Automation OCR & Document AI Azure Document Intelligence AI-Driven Workflow Systems
Backend & Platform Engineering : Java Spring Boot Spring Cloud Microservices Distributed Systems Platform Architecture Workflow Engines (BPMN, JBPM) RESTful APIs ORM & Domain Modeling
Cloud, Data & Storage : Microsoft Azure Azure Cosmos DB Azure SQL Azure Blob Storage Azure Data Lake Oracle PostgreSQL MySQL PL/SQL Data Processing (Presto, Hive)
Integration, Security & Event Systems : Apache Kafka Event-Driven Architecture Enterprise Integration (SAP, APIs) OAuth 20 Keycloak (IDAM)
Frontend, Tools & Engineering Practices : React Angular Cordova Swagger / API Documentation Performance Optimization Cost Optimization Technical Debt Reduction System Reliability SDLC Technical Leadership Mentoring
Timeline
Staff Software Engineer
Walmart Global Tech India
05.2024 - Current
Senior Software Engineer
Walmart Global Tech India
04.2022 - 04.2024
Software Engineer III
Walmart Global Tech India
03.2021 - 04.2022
Senior Technical Leader
Intellect Design Arena Ltd.
05.2017 - 03.2021
Team Lead
Intellect Design Arena Ltd.
07.2015 - 04.2017
Bachelor of Technology - Computer Engineering
SRM University
06.2011 - 12.2014
Software Developer
Intellect Design Arena Ltd.
05.2010 - 06.2015
Diploma - Computer Science
Ramakrishna Mission Polytechnic College
06.2007 - 04.2010