Michael Ha Email & Phone Number

Redmond, Washington, Us

Oakland, California, Us

Developed POCs for client’s next generation software architecture.Utilized event-sourcing pattern with Kafka to establish a data pipeline for prototype databases Deployed and modeled multiple NoSQL databases including Cassandra and CouchDBPersonally met and organized meetings with database vendors (Datastax, IBM) to try to solve and optimize databases (configurations,queries,etc.) for client’s use casesImplemented Java scripts to generate fake JSON data to stress and analyze databases using the standard industry healthcare modelEstablished POC using HDFS, HIVE, IMPALA, KUDU, HBASE using Cloudera’s Data Hub to determine viability and ease of use Developed applications backend REST APIs to interact with the databases in NodeJSPOC application’s backend developed using NodeJS and REST APIPOC application’s front end developed in ReactJS

Chicago, Il, Us

Developed and maintained the backend of an app using Java built with Apache MavenDesigned and updated the frontend using JSF+PrimefacesHelped develop and maintain REST API for devices, alerts, and user settings using a Spring FrameworkImproved and adjusted database queries to halve the calls in Cassandra using CQL Sustained an ETL pipeline to ingest data using Kafka, Zookeeper, and Redis for data transferCreated unit and integration tests with Spock and Groovy to increase code coverage of many microservices from <50% to +80%Deployed Docker containers leveraging a microservice architecture for better fault isolationUpdated mock device simulators using lightweight M2M protocol in Eclipse Leshan using a JSON data modelCreated scalability solutions for microservices for multi-node containersUsed Atlassian and Jira to collaborate with the team for Agile software developmentIntegrated Git, BitBucket, and Jenkins for code collaboration and testingUtilized Kibana and Grafana to monitor logs/performance to detect and resolve urgent issuesMaintained and fixed multiple defects for a second project using Kotlin, React, and PostgreSQL