Darrell Jefferson Email & Phone Number

Northfield Acres, Illinois, United States

• Implemented Enterprise Redis on Redhat OpenShift and configured/monitor the production database used for jet engine testing• Conducted system testing for NPSS simulation with data captured in Redis DB• Created Python scripts to parse raw NPSS data to populate a Postgres database used by engineers for jet engine performance• Created Kafka topics and published NPSS data using Java 8 while extracting data from a Postgres Database• Created Ruby scripts to read and filter out obsolete jet engine data as a precursor to Python processing

San Francisco, California, United States

• Created microservice for Offline TellerView using Kafka to post account transactions to be written to Electronic Journal (EJ) for later batch processing on Mainframe• Managed off-shore team and coordinated work assignments for Java back-end services for support of Off-Line TellerView• Provided technical solutions and guidance for microservices architecture in support of TellerView.• Created a new off-line TellerView application using Visual Studio 2017 written in C# lanagage and WPF to mimic basic functions of the main TellerView System• Created and populated H2 tables from off-line TellerView with transactions from end-to-end testing• Created a window service program to scan H2 tables and package transactions to push to the server for updating Tellerview Databases.• Analyzed Angular 7 code to convert into C# code to retro-fix into the off-line TellerView application• Created UIPath test scripts for Tellerview application regression testing for Trial balance and Electronic Journal (EJ) changes• Worked on JIRA stories for T714 trail balance with changes to Angular Component code and modifications to HTML attribute behavior.Technologies used: Postman, H2 DB, JDK 1.8, Git, SpringBoot 2.0, Java 1.8, Visual Studio 2017 C#, WPF, Angular

• Created new ASP.Net Razor UI screens using Visual Studio 2017 for Pre-Trail defendents using SQL Server 2014 for court preceedings • Implemented a Redis queue for Probation Department to post JSON objects for parolee’s that were consumed by a 3rd party court application• Modified legacy COBOL programs and CICS screens to Java class and JSP modules as part of the modernization project.• Modified Alameda Sheriff’s REST webservices by creating new end-points to provide arrest information for plaintiffs from DB2 databases.• Created java modules to populate RabitMQ queues for Pre-trail information from Sheriff’s SQL Server Databases for Tyler Software visibility• Utilized Asynchronous message queues features in Rabbit MQ to poll jail message for suspect bookings and updated MS Sql database• Converted approximately 30 DB2 stored procedures to T-SQL as part of a project to migrate from DB2 to SQL Server 2014.• Created new Java programs to process XML data from Mule and populate SQL Server tables for the CRIMS database• Created new Jenkins jobs for code deployment to CRIMS test servers as part of the JBOSS migration from IBM WebSphere• Created Spring Batch Java modules for ETL from DB2 to SQL Server and provided run-time analysis of the Spring Batch Job Repository for IT Operations• Created a Spring Batch process to populate MongoDB with Warrant Arrest information for later governmental reporting to the State of California Justice Department.• Created and deployed AWS Lamdba code for processing Bail data and posting to the Tyler Court System Technologies used: Splunk, Postman, DB2, SQL Server 2014, JDK 1.8, Grunt, Git, SpringBoot 2.0, RabitMQ, Jenkins, WebSphere, JBoss, Spring Batch, DB2, SQL Server 2014, TSO, SPUIF

Mountain View, California, United States

• Created Kafka topics and partitions and managed ZooKeeper clusters for (QBOA) for SalesForce integration of Account Tier information.• Implemented Zipkins for distributed Micro Service Monitoring. Integrated Swagger UI and wrote integration test along with REST document.• Created new Angular 8 components and service modules using CLI and implemented logic display (QBOA) tier data from MySQL databases.• Modified GraphQL mutations to support modifications to QBOA tier enhancements to capture additional attributes to post to the client’s database records• Created JavaScript test cases using Sinonjs, Enzyme, and Apollo in support of QuickBooks UI enhancements• Performed UI testing on MacOS using Grunt and Brew for JIRA stories for closures• Integrated a new in-house java SDK for data governance which allows End Users to perform deletion of their data to be compliant with new California legislation. • Created new REST endpoints for QuickBooks Accountants to inquire about their ProAdvisor tier points.• Performed coding changes for existing stories to resolve UI and back-end related bugs with QuickBooks Accountant (QBOA) and Match-Making Services.• Modified micro services configurations for QuickBooks Accountant (QBOA) to utilize new server ports and Hikari settings.• Modified Java code for Kafka consumer classes to process new message types from external vendors that provide certification messages for QBOA clients • Created Docker files to spin-up instances of Monolith (Intuit Core Base App) and tested port accessibility. Attached MySql instances to Docker containers and modified Jenkins deployment jobs for Docker instances.• Created a microservice for publishing QBOA-certified accountants to Sales Forces (SFD) channel to facilitate promotional campaigns• Created new functional React components for featured benefit grid UI for Quickbook Accountants

Foster City, Ca.

• Reviewed and approved Bitbucket pull requests from the Dev team• Created Nodejs code using mongodb package for connectivity to Mongo database• Created Nodejs modules to connect to Linux servers using the Net package to allow Node to ping test servers• Created a Nodejs / python dashboard application for monitoring system health for java Tomcat and node applications• Created Reactjs UI for a dashboard monitoring application used in conjunction with the backend python script.• Created UI templates and reusable components and integrated Reactjs with Node to call Linux server services• Created new Jenkins jobs for Nodejs and java builds and deployment to Linux servers• Created maintenance Jenkins jobs for repetitive Linux sysadmin tasks such as disk space clean-up, checkmarx code coverage and code deployments• Coded Junit/Mockito test cases for VDP api testing and code coverage analysis• Worked on resolving infrastructure errors that hindered testing efforts on numerous Linux servers• Created new testing environments and installed core software components (Java, Nodejs, Oracle) for VDP testing• Created project plans for the Linux server migration efforts and working with Technical Project Managers to approve migration strategies• Migrated numerous VISA applications to Spring Boot and modified maven POM files for all new dependencies. • Externalize hardcoded configurations in Spring Cloud environment using Bitbucket for version control all configuration files.• Created Docker containers for numerous Java and Node Apps for developers to test API enhancements and I setup ports and DNS services• Created Jenkins jobs to deploy Docker containers accross numerous linux servers in VISA server farms and monitoring.