Working in Growth Platform which is a part of Marketing Technology organization.

Agentic AI - Developing Agentic AI application as automation to bring productivity, efficiency, and lowering operations cost for typical operations in Growth Engineering platform.

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.

Technologies:

AI (MCP Server, OAuth/Security, Agentic AI Application, MCP Client, LLMs), Others (Java, Scala, Python, Microservices, GraphQL, Cassandra, Hive, Spark, Kafka, Airflow, Elasticsearch, RDBMS/MySQL, ETL, AWS, GCP and more).

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 sales

and use tax system. Achievements are:

• Built crazy fast microservice APIs improving round trip performance by 15X. Achieved by way to

removing Database calls, caching rules in memory, multi-threading cart, parallel cache building to

replace 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 a

highly 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.