Zack Dannar Email & Phone Number

Bozeman Montana

Bozeman Mt.

As a member of Pulsara, I automate application code and infrastructure deployments using principles of immutable infrastructure. I specialize in creating repeatable processes to eliminate traditionally manual systems administration tasks including but not limited to: machine image creation, firewall management, network operations, security, and data archival.Company Impact:* Replaced single point of failure database node with highly available Galera MySQL cluster split across AWS availability zones.* Split web servers and utility traffic across AWS availability zones to improve high availability.* Create and use Chef Solo recipes for server image provisioning. Provisioning is used by Vagrant, Amazon Web Services and Google Cloud Platform for server image creation.* Implemented Datadog monitoring to gather machine performance and monitor systems. This includes the creation of custom monitors and metrics.* Implemented OSSEC host based IDS system for security. Designed OSSEC key exchange/registration process using beanstalkd for automated deployment. Notifications are presented in Slack versus traditional email system.* Documented and streamlined creation of infrastructure and stack updates using AWS Cloud Formation and Google Deployment Manager.* Updated production web server deployment process to minimize impact for customers and provide continuous up-time during production deployments.* Updated TLS profiles on Elastic load balancers to allow only acceptable cipher sets.* Rebuilt entire Pulsara software and infrastructure stack on Google Cloud Platform using GCP Deployment Manager. This included reworking cloud provisioning into a single source template based provision system.* Reduce product latency by continually reviewing MySQL slow log for problem queries and queries not using indexes.* Engineered solution for database server image updates using rolling updates. Rolling updates provide zero to minimal customer impact.

Bozeman Mt.

As a SysAdmin for RightNow, I administered, engineered and deployed systems for development and quality assurance testing. This included firewalls, F5 LTMs, physical and virtual server environments. I Deployed and tested new architectures to support the RightNow CX product before promotion to production. As a member of a team, I engineered and maintained automation systems and processes to allow product testing. I deployed, maintained and monitored 400 plus virtual servers and 30 plus physical servers.Company Impact:* I was one of four employees who knew how to deploy a "Cloud Pod", full product supporting environment, from the ground up. Created and maintained documentation for processes and systems deployment of product support environments.* Enhanced, debugged, patched and deployed updates and bug-fixes to Python based hosting management system.* Created a web based automation system to allow QA Engineers to recreate and manage their own automated regressions runs.* Increased the QA automation run by 200% by deploying additional Windows hosts and extended product environment to facilitate parallelism.* Created an updated Python based MySQL database management system to monitor and resolve replication issues.* Became go-to guy for MySQL, Python, Git and MS Powershell information and issues.* Created Git repositories to manage source code of back-end automated processes.* Created YUM repository to package and deploy RPMs to maintained systems.* Created tools to aid in automation of system deployment using Python, Bash, Powershell, YUM and RPMS.* Created VMware ESXi reports using MS Windows Powershell and PowerCLI.* Created a sudo like C++ executable allowing fine grain access to product files while separating access to operating system files. This allowed for auditable access to product files while allowing QA Engineers convenient access.* Debugged and solved network issues on firewalls, F5 LTMs and pod infrastructure.

Bozeman Mt.

As Team lead for the Tools (processes and automation) group of Zoot's systems administration department, I developed and maintained all Python, Bash and Perl back-end support systems for Zoot's credit decisioning engine and loan origination platform. I was responsible for design, implementation and fulfillment of analytics, statistics and monitoring of Zoot's ASP processes. I was the primary administrator for SSH/SFTP, Connect Direct, FTP, PGP and CVS on Linux systems. I worked with configuration management staff in maintaining Python and Perl module support.Company Impact:* Enhanced coding standards for Python and Bash programming including code installation and management in CVS.* Designed and reimplemented back-end ASP support systems.* Secured FTP and SFTP external client accounts with proper configuration and use of rssh and jailkit change root(chroot) systems.* Created and maintained automated enterprise billing and reporting service.* Adapted Bugzilla, an open source software management system, to include a poster board. This included Perl/CGI and MySQL changes.* Aided in the acquisition of a new client by contributing to specialized implementation team. Created environment and manipulated production data to facilitate load and performance run of client data against new code base.* Created production environment for co-located third party software. This included creation of user accounts, environment setup, log archival, automation of billing processing and full automation of cascading update/monitoring service for software product.* Repaired and configured applications on new customer test servers meeting strict client deadlines. Project would have been tabled for three months if deadline was not met.* Started organized development and version management of rc startup scripts for production services on production and internal test Linux servers.* Provided training to technical support staff.* 3 years on 24-7 production server support.

Bozeman Mt.

As a Systems Engineer for Zoot, I developed and maintained client software platforms using a proprietary scripting language for an instant credit decisioning engine. I provided consulting and troubleshooting for 7 of the 10 largest financial institutions in the United States.Company Impact:* Developed tools in Perl and Bash scripting languages for testing and development which increased both job performance and efficiency.* Supported source changes to proprietary scripting language for Microsoft SQL Server to Oracle database conversion. This included debugging errors found in stored procedures during conversion.* Became a respected resource with the department regarding system wide technologies and behaviors.

Bsce, Computer Engineering

Bsee, Electrical Engineering