Application Development• Developed a framework for batch processing of files to minimize the development effort to just adding configurations for new file formats.• Enhanced logging to capture the user behavior by streaming the log messages to HDFS file system in real time for log mining using log4j and flume appender.• Enhanced the existing payment file processing framework, message receiving and processing frameworks to incorporate new business requirements.• Collaborated on the design and implementation of new features and coordinated installation of software.• Integrated with real time payment systems and clearing house systems using webservices and messaging service. • Drove continual improvement to system architecture by refactoring legacy code.Optimization• Optimized the payment authorization process by performing in-depth technical analysis to overcome the server time out problem when authorizing payments containing more than 10K transactions. • Decreased the processing time of reports containing more than 300K transactions exponentially, which used to take around 4 hours, to 2 minutes by removing the redundancies and efficient memory management.Security and Stability• In-depth analysis of vulnerabilities in application reported by Veracode scan and penetration testing. Provided mitigation and fixes for flaws to make application secure and stable.• Worked with security experts to identify security flaws like cross site scripting, sql injection, command injection etc. and discussed on the preventions recommended by OWASP.Leadership• Oversaw a 5-person team working on $2 million project for new payment system.• Worked with project managers and business analysts to finalize the requirements and involved in breaking down requirements into tasks with estimation.

Application Integration • Designed, developed and deployed the webservices for a client (PF Concept) for order management. Created a dedicated tool for testing webservices. • Built REST APIs for mobile application development.Web Application Development• Conducted a full life cycle development in multiple software environments like Java, Linux, C# etc.• Involved in database designs and index optimization.• Worked with project owners to analyze the customer feedback.DevOps• Configured the application server. Worked with system administrators to configure the load balancer.