Thomas Leichenauer Email & Phone Number

Maintenance and enhancement of proprietary payroll software for an airline and financial clients. Upgrading and enhancement of proprietary financial software for various institutions. Documenting and tracking of project tasks to achieve client goals. Modification and redesign of commercial applications. Training of personnel from various groups. On-call support.

Bentonville, Arkansas, Us

Conversion and modification of point-of-sale (POS) systems to provide extended capabilities and capacities for a very large retail company. Application internationalization, problem analysis and diagnosis. Conversion and redesign of legacy application systems to comply with client requirements.

Indianapolis, In, Us

Embedded SQL programming and Unix shell scripting. Conversion and modification of software programs, scripts and database tables for a state healthcare contract. Troubleshooting and correction of project applications and database redesign.

Bentonville, Arkansas, Us

Analysis and maintenance of financial entries regarding accounting categories and financial balance of stores for a large international retail firm. Troubleshooting of business application code. Maintained and supported database tables, entries and scripts as required for production support of point-of-sale (POS) systems. Extensive client contact and support.

Bethesda, Md, Us

In support of Instrument Flight Procedures Automation (IFPA) group, assisted in determining system problems. Provided and evaluated recommended changes. Developed Data System Change Proposals (DSCP) from Technical Orders sent from FAA Flight Standards. Performed unit and regression testing of system changes to ensure consistent and correct data in compliance. with FAA Order in producing Standard Instrument Approach Procedures (SIAP). • Create and/or update IFPA User's Manuals to provide instruction to the end user.

Responsible for the installation, configuration and testing of MQSeries and various vendor products on z/OS, HP-UX, Linux and Windows systems. Provided technical support to customer groups in the design, deployment, troubleshooting and support of middleware applications. Monitoring and servicing of various application queues for various software systems to assure high availability. Design and development of specialized applications and utilities to aid in administration of Websphere MQ. Coordination of software requirements and servicing of change requests with project teams.

Responsible for the installation, upgrade, and configuration of Websphere MQ product on z/OS, AIX, HP-UX, Linux and Windows systems. Monitored various queues, queue managers and other subsystems to assure high availability for feeds of various customer data. Unit testing and integration. Analysis and performance tuning. Design and development of specialized applications and utilities to aid in administration of Websphere MQ. Provided technical support to customer groups in the design, deployment, troubleshooting and support of MQSeries applications in standalone, Websphere Application Server (WAS) and Web Service environments. Submission and monitoring of trouble tickets to vendors.

Washington, Dc, Us

Configured and implemented MQSeries publish/subscribe applications in customer development, certification and production environments. Developed architectural specifications for Websphere MQ in a clustered Websphere Application Server (WAS) environment. Submission and monitoring of trouble tickets to vendors. Troubleshooting of production applications. Development of utilities to aid in MQSeries administration. Provided technical expertise to management and client application groups.

Provided administration, support, monitoring and configuration of MQSeries on over 600 systems of various platforms throughout North America. Redesigned and implemented employee time-clock system using TCP/IP (sockets), MQSeries and IMS to provide GMT orientation and usage across all U.S. time zones. Enhanced middleware multi-threaded encapsulation routines for multiple protocols and platforms. Developed multi-threaded database application (MQSeries, ITOC, and TCP/IP secure sockets) APIs to provide customer performance, maintainability, and provide more rapid application deployment (SOA). Produced user manuals for customer group usage of developed APIs. Development of custom applications for various customer groups. Performance monitoring and servicing of critical application queues. Real-time network application monitoring and analysis using packet sniffer utilities. System analysis and performance tuning. Coordination of requirements with project teams for both in-house and COTS software. Submission and monitoring of trouble tickets to vendors. Servicing of customer change requests and troubleshooting for various applications.

Research of middleware suitability to provide project requirements. Development, troubleshooting, and maintenance of two-tier and three-tier multi-threaded client/server applications. Architectural design and development of middleware encapsulation routines for multiple protocols and platforms. Developed multi-threaded APIs to provide customer performance, maintainability and provide more rapid application deployment. Design, development and support of special purpose high-level APIs using MQSeries and TCP/IP encapsulation routines as a base API, providing easy-to-use API bridges to IMS, ARINC, and PARS client/server processing. Performance monitoring and servicing of various critical application queues. Development of custom applications for various customer groups. Produced user manuals for customer group usage of developed APIs. Responsible for software builds and configuration of MQSeries products on various platforms. Provided development and support of system for handling of work orders for aircraft equipment maintenance using MQSeries; yielding a 40% improvement in request service time. Implemented employee time-clock system using TCP/IP, MQSeries and IMS. System analysis and performance tuning. Led design, development and support of MQSeries system for handling customer purchases and flight update data, increasing ticket sales capacity and providing more accurate and timely customer feedback. Mentored team and customer group personnel in various aspects of API design, implementation and usage. Conferred with customer groups to design effective solutions. Provided extensive client contact and support.

Arlington, Va, Us

Design, development, and maintenance of real-time digital signal processing simulation applications for the US military. System generation and performance tuning on various scale midrange systems in both standalone and networking environments. Low-level and device driver performance tuning. Troubleshooting and resolution of operating system, compiler, and hardware errors. Interfacing with hardware group to provide top performance of simulation and on-board systems. Design and implementation of real-time simulations for environmental, navigation, and embedded weapon delivery systems related to various aircraft. Regression testing and analysis in simulation environment as prelude to actual flight testing. Submission and monitoring of trouble tickets to vendors. Produced documentation and other utilities within MIL-STD-2167A guidelines resulting in a 60% to 80% timesaving in user and analysis time. Performed hardware/software feasibility studies and recommended hardware upgrades and enhancements later implemented. Received merit award for analysis and upgrade suggestion and implementation.