Madhan Kumar Email & Phone Number

Pleasanton, California, US

Walldorf, BW, DE

• Responsible for end-to-end ownership from requirement analysis, design, develop, automation and component delivery pipeline of SuccessFactors Core HR utilized by 4000 customers and dealing with millions of transactions.
• Architecture data model’s migration to distributed cache providing same performance and reduction in memory footprint by 90%
• Implemented events based inter-module integrations using messaging queue’s for loose coupling and eventual consistency models
• Designed and developed APIs for UI flows, internal & external integrations with scalable restful APIs
• Handled the complex legacy code refactoring flows using TDD and A/B testing alongside with maintaining both versions alongside
• Worked extensively on service layer engine that harmonizes the data entry points between UI, API, Imports and Workflows

Pune, Maharashtra, IN

• Designed and migrated huge volume of complex hierarchical structured objects with writing custom extraction and imports
• Implementation involved with complexities like field type changes, field id changes, converting raw files to blobs, associating backward and forward object references
• Perfected the speed of extract and import using multi-threading and multi-servers
• Identified different memory leakages and performance fixes, that improved application performance by 22%
• Architecture the complex task to handle accumulation of commitments, approvals, orders & actuals on the downstream objects
• Developed monitoring system to handle critical exceptions with notification and automatic handling of application restarts

Pune, Maharashtra, IN

• Handled performance testing using load runner scripts with error handling, Dynamic correlation, Parameterization and Optimization
• Developed Load Runner scripts for Ariba Requisitions, Invoices, & Searches
• Analyzed Transaction Response times, Query Performances (using Confio Ignite), Worker Threads & memory usages
• Few projects that heavily utilized performance testing, (like, Date-Based Pricing, AltaVista Capacity, Database upgrades)
• Contributed to functional and automation testing of enhancements, new features and, bug fixes
• Developed various JavaScript’s & Pl/SQL scripts to fix transactional data issuesDevelopment tools: Java/J2EE, Javascript, Load Runner, Ariba, Hibernate, Spring Framework, SQL, Junit, Weblogic, SVN, Oracle