University of California, Santa Cruz

University of California Santa Cruz Extension

ITIL

Unix Infrastructure Operations Engineer

Denver, Colorado, United States

- Manage Red Hat Enterprise Linux 7, CentOS 7, and Ubuntu using Chef* Member of Innovation and Initiatives Technology Team, August 2015* Technical Lead for Amazon Web Services evaluation* Member of Docker High Touch Beta Program for Red Hat Enterprise Linux 7, 2014* Member of Red Hat Enterprise Linux 7 High Touch Beta Program, 2013-2014* Manage VMware ESXi hypervisors, including vCenter.* Maintain Unix configuration management and monitoring tools.* Manage 3000+ Unix hosts, including compute clusters and servers using DevOps and Configuration Management tools and practices.* Evaluate and test virtualization and cloud products:  OpenStack, Nebula, OpenNebula, RHEV, oVirt, docker, linux containers, vagrant* Manage Red Hat RDO OpenStack* Manage Nebula OpenStack* Provide documentation, scripts, and teaching demos for OpenStack* Install and configure Unix virtualization and private cloud environments.* Member of Patch and Vulnerability Group (PVG), Unix representative.* Provide Unix cyber security consulting.* Evaluate Unix security alerts and vulnerabilities* Evaluate and install security vulnerability workarounds and patches.* Manage IPv6 OS configuration and ip6tables host based firewall rules* Manage SELinux Mandatory Access Control (MAC) on RHEL7* Manage sVirt SELinux Multi-Category Security (MCS) in RHEL7 KVM and OpenStack

SLAC National Accelerator Laboratory

Unix Systems Platform Lead

- Identify and report Red Hat Linux bugs and collaborate with Red Hat engineering on fixes.* Manage Red Hat Network Satellite Server and Proxy servers* Maintain relationship with Red Hat Technical Account Manager.* Install and manage Red Hat security updates including kernels.* Install and manage AFS kernel modules for RHEL.* Manage RH Kickstart network installation infrastructure.* Customer liaison for SUNCAT and SDC/SSRL scientific groups.* Manage UNIX server remote serial console services and IPMI.* Investigate UNIX system break-ins* UNIX forensic analysis, incident response, root kit analysis, data hiding.* Manage updates of UNIX administrative passwords.* Manage central UNIX system logging service.* Manage central Samba service for UNIX/Windows interoperability.

Principal Unix Systems Engineer

- Managed UNIX BIND DNS and Apache web servers for large Internet portal.* Managed UNIX SSH VPN connecting remote data centers.* Managed Coyote Point Systems hardware load balancers.* Tuned TCP and Apache for more than 2.3 million unique visitors per month.* Provided 24/7 UNIX support with rotating on call pager duties.* Monitored web servers using SiteScope.* Performed cyber security scans and intrusion detection monitoring.* Managed core servers at AboveNet Inc. co-location in San Jose.* Moved corporate data center to new building with minimal downtime.* Managed switches and VLANS on corporate network.

Taos Mountain

Senior Unix Systems Administrator

- Worked with upper management to establish computing policies.* Managed annual budget which was fully recovered via recharges.* Produced monthly recharge reports and invoices.* Led monthly computing meetings with customer contacts and upper mgmt.* Managed UNIX systems support team.* Team lead for UNIX systems administration.

UCO/Lick Observatory

Unix Systems Manager

- Managed all aspects of independent /23 UCSC campus subnet.* Maintained Ethernet punch down wiring closets for 3 story building.* Responsible for DNS, sendmail, NIS, NFS, Web servers for ucolick.org.* Managed 100+ UNIX servers and workstations.* Provided UNIX support on Mount Hamilton Observatory.* Installed, configured, and supported AutoCAD for staff engineers.* Installed, configured, and managed Solaris, Tru64 UNIX, and Red Hat.* Provided UNIX support for all faculty, staff, postdocs, grad students

- Managed Sun Workstations and Servers* Managed public login Unix workstations* Managed Unix documentation* Managed X Terminals* Managed Red Hat Linux, Solaris on SPARC and x86, Digital Unix* Managed storage for Astronomy data

Karl Amrhein