Viraj Weerasinghe

Colombo,Sri Lanka

Summary

Title: Senior Software Engineer Experience: 5+ years Industries: Software, Security, and Web

Overview

years of professional experience

Certification

Work History

Senior Software Engineer

WSO2 Inc

01.2022 - Current

Analyzing customer issues to identify the causes and develop solutions using Java, Web Socket APIs, SOAP and REST APIs and Apache synapse
Deep understanding in RESTful Web Services and troubleshooting skills in the code level and network level
Experienced in deep analyzing and troubleshooting skills in multi threading and capturing and thread dump analyzing skills
Experienced in deep analyzing and troubleshooting skills in network related issues using TCP dumps and load balancer issue troubleshooting skills
Experienced in SSL related issues debugging issues and troubleshoot certificates related issues
Database related issue analysis including enabling show queries and understanding and handling deadlock scenarios with MYSQL, Oracle and NoSQL
Deep understanding and experience in troubleshooting authentication related issues including OAuth, OAuth2 and user provisioning issues
Experience in Amazon S3, EC2, SQS and integration with WSO2 Products and AWS Java SDK
Experience in cloud technologies including Microsoft Azure, AWS
Experience in the kubernetes environment issues troubleshooting including working with Deployment, Services, ConfigMaps, Pods and Clusters
Deep analyzing skills with debug codes and provide patches to runtime java applications and troubleshoot the issues
Proven communication skill with clients via calls to provide support when they want troubleshoot issues
Being an effective team member with good communication skills

Software Engineer

Zincat Technologies

Developing and maintaining a MicroService for grabbing data from AWS S3 using Spring Boot, MongoDB, and the AWS SDK, including a chunking mechanism to handle large files
Developing and maintaining a MicroService for data querying from the database, including data caching with Spring Boot, MongoDB, Ehcache, and MongoDB Aggregation to improve performance
Developing and maintaining a MicroService for sending messages using Kafka, Spring Boot, and MongoDB
Developing a MongoDB data backup AWS Lambda function using Zappa, Python, and AWS Lambda, to ensure data resiliency
Providing support to the team in risk assessment and providing fixes
Maintaining detailed documentation of development activities and communicating progress to stakeholders

Associate Software Engineer

Virtusa Pvt Ltd

12.2018 - 01.2021

Designed and developed a REST API for Rally CA (Agile Tool) using Spring Boot, Spring JPA, REST API, and MySQL, including scheduling, data manipulation, and data extraction
Maintained a Jira plugin and enhanced the UI using AngularJS and Spring Boot
Worked with DevOps technologies such as Jenkins, Docker, and Kubernetes
Followed Agile (SCRUM) methodologies, including continuous integration and continuous development
Led the database migration of the application from Oracle to PostgreSQL, which involved migrating over 400 terabytes of data
Conducted research and development of database layer functions to support the existing codebase using PostgreSQL and Spring Boot
Implemented an API automation framework using Rest Azure and Spring Boot
Worked with CI/CD pipelines and Agile work environments
Conducted performance testing using JMeter

Education

Bachelor's degree - Information Technology

Sri Lanka Institute Information Technology

06.2018

Skills

Core Java
Spring Boot
Spring JPA
Hibernate
Gradle
Maven
NoSQL
MongoDB
Oracle
PostgreSQL
MySQL
AngularJS
HTML5

JQuery
WordPress
Microservices architecture
RESTful API design and development
Git
Jira
Kafka apache
Jenkins
Docker
Kubernetes
AWS
Microsoft Azure
NGINX