University of Illinois Urbana-Champaign

Senior Systems/Integration Analyst

• Provide level 3 customer troubleshooting Web application Firewall (WAF) products based on Nginx, Apache, PERL and SQLite.
• Built appliances on AWS, Centos and BSD platforms that offer Security as a Service (SAAS) across a server farm with thousands of customer systems. 
• Provide scripting with BASH and PERL on AWS, Centos, Mac OS X and BSD to update software, monitor status and analyze logs.
• Document solutions, software issues, training material and bug reports.

Alert Logic

Senior Linux Engineer

• Developed OO PERL CGI application software on CentOS Linux with Apache web server.
• Provided technical leadership for implementation of technology  for business collaboration. 
• Built servers using Vmware, VirtualBox and CentOS Linux for development, testing and integration.
• Provided MySQL administration and software testing.

Contract Consulting

Senior Integration Analyst

• Provided maintenance support for data center with Oracle database servers with Veritas VxFS disk storage on Solaris operating systems. 
• Created performance and fault monitoring scripts to automate log summaries and report issues.
• Provided patch installation and updates for Solaris and vendor products.  
• Configured SAN storage for use with Oracle Database instances.
• Provided troubleshooting and coordinated with vendors for hardware replacement under service agreements.

Houston Metro / Sigma Solutions, Inc.

Senior Systems Analyst

• Built servers with Redhat Linux, Landmark products and collaboration software for testing and integration of customer solutions.  
• Provided troubleshooting for audiovisual hardware for servers, projectors, Video switches, Fibre DVI video and KVM extension hardware to support collaboration/presentation rooms.  
• Provided Pre/Post Sales installation support for Collaborative Work Environment tools and solutions for enhanced remote operations.
• Provided technical leadership for evaluation and implementation of technology in the Collaborative Work Environments group.  
• Built servers with Windows Server 2003/2008 OS for evaluation, integration and testing of video conferencing server and collaboration software.  
• Collaboration server software was integrated and tested with Oracle databases, Active Directory, LDAP and storage servers.  

Accomplishments:
• Developed graphical software using Perl/TK to control projectors, displays, Vista SpyderX20, video switches and control equipment for user-friendly presentation room control.  
• Deployed a multi-server Collaboration Demo installation in Malaysia as part of a winning proposal for Halliburton Landmark to provide services to remotely manage oil production platforms for the Taiwan oil company.
• Performed market analysis and evaluation of collaboration software tools intended to provide a rich environment for global team meetings.

Halliburton Landmark Graphics / Apex Systems Inc.

• Provided Linux and Solaris Administration, Infrastructure design, implementation and troubleshooting.
• Provided Citrix Server Administration to provide a secure remote Solaris desktop access.  
• Provided Oracle Server Administration to support Landmark applications.

Accomplishments:
• Implemented architecture for LDAP and DNS with redundant failover.   
• Configured OpenLDAP to provide directory services and secure (ldaps/ TLS) authentication to migrate away from NIS services in order to provide SOX compliant Solaris and Linux client user authentication.
• Provide OO Perl development using Net::LDAP and Net::SMTP to create a central password aging solution and web based UNIX password change for SOX compliance.

Mariner Energy Inc./ Sigma Solutions, Inc.

• Configured a SAM-QFS on a Solaris 2.10 cluster to manage the SAN storage, L25 (5 Tb) Tape library, near-line LTO-3 tape backups and provided NFS storage for a Linux cluster.  
• Configured SAN storage consisting of SE3511 fibre raid arrays and Qlogic 5200 fibre switches.  
• Provided performance tuning, testing and benchmarking for customer acceptance.

Accomplishments:
• Provided post sale install and configuration of SAM-QFS v4 cluster on Solaris 10 V210 servers to provide 12 Terabytes storage at 1Gig/s throughput for a 48 node Linux high performing cluster solution for the National Resource Center, Canada.

Sun Microsystems, Canada / Crescent Solutions

• Built web development systems using secure (https) Apache, Tomcat, openldap, openssl, PHP, PERL and Mysql on the FreeBSD, Redhat Linux and Windows 2000 platform. 
• Installed Linux systems using PXE and Kickstart.  
• Developed web applications for data analysis products using Tomcat, JSP and PHP.  Tested and integrated software environments.   
• Integrated Linux workstations and Linux clusters to perform analysis on network data.  
• Integrate storage systems to provide near-line access to terabytes captured network data.  
• Provided Perl programming for automated analysis and log management.  
• Developed documentation for server software configuration control.

Phoenix Associates

• Designed and implemented enterprise storage systems to meet required performance, reliability and cost, for archiving and accessing seismic data files, email, database images, and backup images.  
• Provided pre-sales demonstrations, post-sales installations and customer support for storage systems used to process seismic data for oil exploration.  Evaluated and integrated new product lines for solutions.
• Tested & Integrated high availability SAN disk storage using Sun V880 servers with dual FC-HBA, redundant Fibre switches and T3 RAID storage arrays, SAMFS/QFS HSM software and tape library hardware to provide hundreds of terabytes of near-line storage.  
• Provided level two support for customer production storage systems with performance tuning, maintenance and troubleshooting.  
• Assembled, configured and tested storage systems using Solaris/SAMFS and Red Hat Linux cluster based SpinServers, with SAN disk storage using Brocade Fibre channel switches and LSI Logic disk arrays.
• Provided system administration and consulting for the development group, controlled source code and built Solaris packages, Ported C applications from Solaris C compiler to Gnu C compiler on Red Hat Linux, developed technical documentation using, IIS and Apache web servers.  

Accomplishments:
• Supported customer on-site PEMEX, Villahermosa, Mexico in resolving issues with older media and migrating hundreds to terabytes of Seismic data to new media and upgraded tape library.
• Provided on-site support for customers Unocal and Conoco in upgrading and migrating large Seismic data archives to SAMFS/QFS near-line storage systems.

Ovation Data Services, Inc.

• Provided project management and technical leadership in the design and build of the Houston Operations web infrastructure using, Iplanet, IIS and Apache web servers on Windows, Red Hat Linux and Solaris platforms.
• Built and administered systems for the development, test and production instances of the web infrastructure.  
• Provided systems administration for MySQL and Oracle database servers on Windows and Solaris. 
• Provided second level support, performance analysis, troubleshooting, software development, software integration, security audits, backups for the production infrastructure. 
• Documented policies for Disaster Recovery and Automated scripts to perform warm and cold database backups, refresh backup boot partitions, disk to disk, and tape library backups.
• Automated shell and OO PERL scripts to monitor systems, provide email summaries and pager notifications related to system security, TCP wrappers, Tripwire, Cracklib, performance and maintenance
• Developed multi-tier web database applications using Java, PERL, TCL/TK shell scripts and Oracle.  
• Developed directory administration tools to manage the LDAP server using PERL-LDAP, PERL-DBI and Java-JNDI.
• Developed tools to provide load balancing for web servers and to forward web browsers through firewall ports using PERL.

Accomplishments :
• Implemented OpenLDAP to manage users on multiple web servers resulting in $250k savings in license fees and thousands of man-hours over 5 years.
• Implementation of the internal corporate CA saved $50k in certificate fees and considerable time in annually procuring the certificates over 5 years.
• Received commendations for Y2K and Disaster Recovery Team.
• Received commendations from customer, NASA Johnson Space Center, for outstanding performance on projects.
• Security Clearance granted by DISCO.

Todd Wiersema