• Developed the user configuration website, using Angular 6, Scala and Node.JS• Designed and Built some features like advanced search and End-to-End Web recording while communicating with our support engineers and customers in order to collect more use cases

• Redesigned and refactored the current monolithic inventory service. Built a new streamlined one with Kafka and Elasticsearch. Improved the scalability and modularity.• Built Elasticsearch cluster, created index life cycle management. Kept the high availability of Elasticsearch.• Used kv-store to implement the leader election mechanism and distributed lock. Saved system resources and kept the high availability of services.• Set up Systemd configuration by puppet to deploy services easily.• Used Blocking Query and Redis to optimize the process of fetching data.• Used Prometheus and Grafana to build a metric dashboard, tracked the latency and payload of messages. Analyzed the behavior of the service.• Implemented a login system with OAuth and JWT token to improve the system security.• Debugged with Nginx, analyzed the error log and resolve any router problems.• Set up Disaster Recovery configuration and created failover, failback rules.• Kept on optimizing the efficiency of the system. Monitored the memory usage and solved threads leak problems.• Ingested and synced experience product information from 3rd party partners to new supplier platform• Provided auto translation for all published products and human translation for frequently viewed products• Responsible for site reliability for entire experience platform to identify bottleneck and improve performance etc.