· Developed and maintained Rich Communication Services (RCS) using Spring Boot microservices.· Migrated messaging systems from RabbitMQ to Kafka, enhancing data throughput and scalability.· Implemented microservices using AWS Keyspace and Apache Cassandra to bridge legacy application.

· Designed and maintained RCS messaging services and flow orchestration, using Spring Boot microservices.· Developed various reporting applications using Python, streamlining data reporting for key business metrics.

· Led development of telephony application server, integrating with FreeSWITCH and Asterisk, improving call processing performance.· Managed credit card processing services with a merchant gateway, ensuring secure and reliable transactions.· Spearheaded development and maintenance of RCS services using Spring Boot and managed orchestration components, enhancing message delivery efficiency.

· Built and deployed a Java SWT solution integrating legacy Borland OWL systems.· Developed custom socket servers and implemented JAXB for XML binding.· Maintained legacy C++ applications and initiated porting to .NET, modernizing systems for better functionality and maintainability.

· Developing J2EE (struts, JSP, JDBC, Hibernate, XSLT) based E-learning Web-application· Flash Application development with actionscript 2.0· Built Japanese language learning website using PHP.

· Developed and deployed scalable Java-based application server for internal callcenter use.· Application server utilizes proprietary XML-based protocol and communicateswith various databases through JDBC.   · Implemented database connection pooling and socket thread pooling· Used many standard profiling and testing tools· Developed custom scripting language and engine with a Java-like syntax· Developed connector to EIC/CIC 2.0 telephony sub-system using… Show more · Developed and deployed scalable Java-based application server for internal callcenter use.· Application server utilizes proprietary XML-based protocol and communicateswith various databases through JDBC.   · Implemented database connection pooling and socket thread pooling· Used many standard profiling and testing tools· Developed custom scripting language and engine with a Java-like syntax· Developed connector to EIC/CIC 2.0 telephony sub-system using COM· Solution was provided within timeline and exceeded performance requirements Show less