Jon Ernster Email & Phone Number

Pinedale, Wy, Us

Irving, Tx, Us

Big Data Consultant specializing in Kubernetes, Elastic, Kafka, Greenplum Database (MPP), Couchbase (NoSQL) and Hadoop (Hortonworks, Cloudera). Architecting, engineering, and supporting on-premise software only solutions, Data Computing Appliance (DCA), Cisco UCS, Bullion and public/private cloud deployed installations (AWS, GCP, Red Hat OpenStack).System/Cluster architecture and design, configuration and deployment, software upgrades, system health checks, performance tuning and optimization, system monitoring, automation, operational best practices and training, application integration and analysis, benchmarking, DDL conversion, data loading, growth assessment, day-to-day maintenance and support.

New York, Ny, Us

• Managed a proprietary data collection and reporting application consisting of a 20 node cluster load balanced through two Coyote Point load balancers set up in a failover configuration. The cluster handled over 1 billion+ requests per month• Managed three environments of a proprietary bid management application which utilized LVS and Coyote Point load balancers in a fail over setup for redundancy. These applications were served up using tomcat, apache, and replicated MySQL installs on the backend in multi-master configurations• Created custom Nagios checks written in Perl.• Configured the Operating System of all new servers that were received. Created a Kick Start configuration file that could be executed over the network to perform the installation and post installation configuration that was required• Assisted in custom development efforts for on boarding new clients with unique needs such as pulling data from third party vendors and manipulating the data to load into our databases via our ETL system• Lead critical application migration from San Francisco datacenter to Phoenix. Managed all operational tasks including configuration of hardware, software and networking. Mirrored 15 server environment on all new HP hardware for seamless migration with minimal downtime and impact to client facing applications• Participated in numerous datacenter moves• Worked very close with the development team in an Agile/Scrum software development environment. Knowledgeable in Software Development Life Cycles (SDLC)• Knowledgeable in ITIL and Change Management processes• Managed two eight segment Greenplum clusters for high traffic, high capacity databases. Developed monitoring scripts to ensure optimal operation and uptime of clusters.• Supported numerous Atlassian products used across the company for bug/task tracking and agile development practices (JIRA), documentation (Confluence), software builds (Bamboo) and code tracking, search and visualization (Fisheye)

Phoenix, Arizona, Us

Managed network for approximately 40 workstations running Windows XP.Managed Nortel BCM Phone SystemManaged network for approximately 15 servers running Windows Server 2003 including web servers, database servers running SQL Server 2000, one replicated MySQL server, domain controllers and one exchange server.Managed network switches and firewall.Imported new files into criminal databases weekly.Verified the functionality of file server and database backups.Set up accounts and configuration for new staff including network, email, phone and voicemail.Ordered and setup new servers and desktop computers as necessary.Provided desktop support for staff as needed.Managed IT related vendors and outsourced service providers Maintained server security by testing and updating service packs and updates via Windows Server Update Services

• Responsible for maintaining, configuring and administering over 400 servers of various types:• Web – IIS6, ASP, ASP.NET 1.1 and 2.0, PHP, Perl, Sharepoint, and ColdFusion MX• SQL – Microsoft SQL Server 2000 and 2005• MySQL – CentOS Linux, MySQL 4.x• Mail/Gateway – SmarterMail 3.x• Statistics – SmarterStats 3.x• DNS – 6 Microsoft DNS Servers, 2 Active Directory Domain Controllers and 4 BIND servers• Handled interdepartmental communication via email and ticket systems• Supervised and trained Level I Server Administrators• Daily responsibilities included: delegate task based work to Level I Server Administrators. Provided instruction regarding departmental procedures and daily duties to Level I Server Administrators• Handled escalated troubleshooting and monitoring for all server types in addition to having 24/7 on call status• Created technical documentation on server build procedures, and various knowledge base documentation to assist Level 1 Server Administrators on troubleshooting techniques• Script and program creation using Perl and batch scripting to automate, manipulate, configure,and collect data from servers

• Responsible for the stability and playback of over 200 digital audio channels, digitally broadcastover satellites worldwide• Monitored and ensured the quality and consistency of the broadcast on all services. This included providing support and troubleshooting with the assistance of the Engineering Department• Worked in direct coordination with all Technology and Programming Departments on various projects and responsibilities to maintain a positive and productive work environment• Ensured that a quality broadcast signal left the Network Operations Center• Provided immediate and proactive solutions to operational issues that could potentially compromise service• General uplink duties (Phone calls, authorizations, email requests, backup tape swap outs)

Bachelor Of Science, Information Systems Security

Education record