Working with multiple stakeholders within the company, integrating data, providing business solutions using big data technologies. Growth Engineering Platform – Working on monetization of business data through customer segmentation. Big Data – Use multiple big data technologies (Hive, Spark, Airflow, ETL, Elasticsearch etc.), RDBMS, Java/Scala/Python, APIs, and more in AWS cloud environment. Cloud Infrastructure Building – spending fair amount of time in building and/or migrating existing cloud technologies to newest and efficient technologies. Business Solutions – analyze various data across web, mobile, life cycle products, Coupang eats, Coupang play, etc. to expand and promote further business growth opportunities through advertisements and promotions.

Worked as Principal Architect/Software Engineer on Data Science in innovating, simplifying, and automating BNY Mellon old generation software systems in private cloud. Worked on building following initiatives/APIs: BRI (Business Resiliency Intelligence) - Real time analytics dashboard building using live event data from various businesses, enriching and presenting on an UI. Metadata API - Provides information of all of the datasets in existence in the data lake.Report Engine - Common API to retrieve data from various sources; e.g. RDBMS, REST API, CSV, Files etc. as batch and stream.Workflow Engine - Workflow design for all approval process using ACTIVITI engine.TECHNOLOGIES: Java, Code writing/reviewing, Architecture, Design, Application Security, Kafka, Hazelcast/distributed cache, Activiti Workflow Design and Building (ACTIVITI/RDBMS, Custom using MongoDB), Spring Boot, Spring AOP, Automation, REST API, Vertica, Data Science, FinTech, Event processing, CI/CD (Git, Jenkins, Docker, Kubernetes), Performance/Availability/Reliability of APIs.

Co-founded in building state of the art, crazy fast, e-commerce micro service APIs on cloud for salesand use tax system. Achievements are:• Built crazy fast microservice APIs improving round trip performance by 15X. Achieved by way toremoving Database calls, caching rules in memory, multi-threading cart, parallel cache building toreplace new rules data with old cache with zero downtime of the system.• Designed and build both Android and iOS mobile apps makes use of the back-end REST APIs.• Automated system tests to measure and monitor quality issues resulting faster execution and ahighly reliable software system.• Simplified complicated infrastructure system towards high performance, scalability, and stability.• Ensured zero downtime.Technologies:Java, J2EE, OOP/OOD, Spring Boot, GitHub, AWS Cloud (Route 53, LB, EC2, SES, SNS, MKS,BeanStalk, CodePipeLine, S3, ElastiCache, MongoDB/DocumentDB), REST API Building, API design,Application Security, Mobile App design and building, XCode (iOS), TDD/CI/CD, Android Developer(Android), Startup company skills, Multi-team coordination, application performance and availability,unit test, integration test, test automation.

I worked in eBay Checkout Platform. - I was leading, innovating and managing sales and use tax microservice API technology.- Checkout platform testing automation - Leading PayPal payment API integration error handling and reliability issues with eBay checkout platform APIs.Technologies: Java/J2EE, SOA, REST APIs, Clear case, OOD, OOP, Eclipse, IntelliJ, SOAP, JAXB, WSDL, JMS, Event, Cloud, XML, UML, Big Data, Hadoop, Big Data, Mongo DB, NoSql, Jenkins/Hudson, Test automation, Performance analysis, PayPal payment APIs, Vertex micro services.

Leader in Oracle EM platform technologies, was leading ClearApp and BTM (Business Transaction Management) applications. Technologies: Java, Java Swing UI, J2EE, AOP (AspectWerkz), Application Servers (Oracle WebLogic, IBM WebSphere, Tomcat), Databases (Oracle 11g), Oracle SOA Suite, Oracle JDeveloper, Agile, Scrum, REST APIs, RDBMS.

Worked on various projects such as Open View – Network Node Manager, Customer Service Call Tracking System, Automation of Banking Operations, and Common Message Transfer Services (CMTS)Duration: April, 1995 – Mar, 2002Employer: Hewlett-PackardRole: DeveloperWorked on various projects in HP as software development engineer.Environment: C/C++, Java, J2EE, CGI, Servlet, JDBC, PL/SQL, JNI, Swing, Shell/Perl Scripting, SYBASE, HTML, OFS (ObjectView Framework), ClearCase, UML, HP-UX, Windows