Denis Tidrick

Well-educated, organized, efficient, effective, experienced, skilled, and able to listen as well as direct/contribute.


Praises help jobseekers showcase strengths and stand out to employers.

Work experience
Diversified Technical Services, Inc
Senior Systems Administrator

Projects: Air Force Recruiting Information Support System - Total Force (AFRISS-TF)

*Key contributor to Risk Management Framework (RMF) program Authority to Operate (AtO).
*WebLogic12c cluster and Alfresco Community Edition administrator. Experience with retired IBM WebSphere, ArcGIS, Subversion, and Lotus Forms.
*Otherwise, same duties and responsibilities as AFRISS - Legacy below (except no current Oracle11g R2 Real Application Cluster, known as RAC, and all 17 AFRISS-TF servers use RHEL, not HP-UX).

Diligent Consulting, Inc. Company
Senior Systems Integrator

Projects: Air Force Recruiting Information Support System - Legacy (AFRISS-L)

*Served as information systems project and platform integration consultant, project deployment leader, systems management advisor and administrator, hardware architect/technician, and software engineer for automated information systems (AIS) at Air Force Recruiting Service (AFRS). Implemented and managed 40+ external Web-based, database-to-database, and Secure File Transfer Protocol interfaces to other authorized commercial and Federal Government AIS.
*Provided both direct and indirect support for current and planned AIS at AFRS, including Continuity of Operations site, the Data Warehouse, and associated training, development, and test environments and related projects including Department of Defense (DoD) Information Assurance Certification Accreditation Process (DIACAP) package preparation for AtO and the Federal Information Security Management Act (FISMA) annual compliance reviews in these areas:
*business and technical requirements development and analysis
*platform technology migration feasibility with risk and benefit analyses
*hardware and software product analysis and evaluation
*hardware and software platform design and costing
*briefings for management with decision-support documentation
*systems planning, documentation, administration, and scaling
*implementation planning, documentation, and management
*equipment inventory, software licensing, and product registration
*hardware installation, configuration, testing, and integration
*software installation, configuration, testing, and integration
*security planning, implementation, documentation, and reporting
*Serviceguard cluster integration with Oracle9i - Oracle11g RAC
*cluster management, control, and maintenance
*process scheduling, tracking, and maintenance
*storage management, tracking, and maintenance
*performance monitoring, analysis, troubleshooting, tuning, and reporting
*preventive and remedial hardware, firmware, and software maintenance
*external AIS interface development, deployment, and maintenance
*shell script development, testing, deployment, and maintenance
*information systems continuity planning, protection, and documentation
*daily disk-to-disk and disk-to-tape backups of sensitive, mission-essential data
*online recovery images of 16 cluster nodes and one standalone server following the periodic (usually, monthly) preventive maintenance periods
*management of online archives for firmware and software updates, operating system patches, and technical documentation and drawings (product and configuration references, procedures, practices, conventions, and standards)

Single-handedly managed six clusters of 16 HP Integrity servers running Oracle11g R1 RAC on HP-UX 11.31 and Serviceguard 11.18 and six storage arrays with management servers and a total raw capacity exceeding 110TB, a library of over 2400 customized fileset objects (scripts, configuration files, and reference files), a shared library of hardware, firmware, and software technical documents plus 90 locally produced practices, procedures, and guides, and all backup operations to disk and tape. Primarily responsible for survival of all current and archived production data through two disasters and one major hardware outage with minimal impact to application availability and no data loss. Successfully managed database platform migrations twice (different hardware and operating systems, successive migrations from Oracle8 to Oracle11g R1, distributed to Web-enabled centralized architecture), three major hardware technology migrations, and four major operating system and clusterware upgrades, plus played a key support role during four major upgrades of Oracle software, the last three including RAC.

MTC, Inc. + Command Technologies, Inc. + CENTECH Company
Senior Systems Analyst Senior Software Engineer Senior Systems Administrator

Projects: Procurement Management Information System (PROMIS) II + AFRISS-L

Served as chief technical adviser for PROMIS II, a distributed Oracle6-based transaction processing and management reporting system at over 1300 continental and overseas locations; as co-leader and technical advisor of engineering, implementation, system administration, and data communications planning groups; as a member of the security, logistics, training, and database planning groups; and as the platform architect responsible for requirements definition and analysis, solution design and prototyping, installation, integration, configuration, administration, testing, tuning, maintenance, data communications and database synchronization, and documentation of the standard hardware and software reference models needed to satisfy various deployment scenarios. Sole AFRS representative in negotiations for an eight-year Small Business Administration 8A $25M contract for the equipment and services, resulting in a 20% life-cycle savings over the allocated program funding. Integrated ACM/Mlink and Multi-channel Memorandum Distribution Facility (MMDF) software with UNIX-to-UNIX Copy (uucp) and locally developed C programs to provide batch and on-demand inter-site communications capability. Developed configuration management, software update, and distribution and installation process and supporting software used to deploy and activate firmware upgrades, hardware reconfigurations, four major software releases, and a locally developed trouble detection and reporting facility. Developed numerous shell scripts for system administration, monitoring, and control; wrote the training plan and materials, and taught classes for 40 administrators; and dealt with product and service suppliers for all technical issues.

AT&T Information Systems, Inc
Senior Technical Consultant

Provided UNIX operating system and office automation technical support throughout the design, acquisition, and implementation aspects of numerous projects for major accounts in the western six states of the Southern Region. Managed technical library and provided technical assistance to a dispersed group of 35 Technical Specialists, plus interfaced with hardware and software product engineering groups on problem escalations. Prepared and delivered executive presentations, designs with costs, and written responses to Requests for Proposal for complex integrated solutions to business problems. Assured the technical accuracy of hardware and/or software sales proposals and the technical success of project implementations, which typically involved UNIX computer deployment or integration of voice/analog and data/digital equipment and signals, for government and large business customers. Participated in the quality assurance of internal systems.

Diligent Consulting, Inc.
Platform Architect
I am exact and make sure my work is mistake-free.
I am able to effectively and respectfully communicate with superiors, colleagues, and staff.
I am able to adapt to new requirements, situations, or environments.

Trinity University

San Antonio College