Expert in computer operating system performance, database performance, application performance, capacity planning, computer hardware, network and software problem troubleshooting and performance testing. Expert at developing performance requirements and performance validation test plans in accordance with ISO 9000 standards. Extensive experience in optimizing application architecture, benchmarking hardware and software.
Accurately predicted required hardware for a wide variety of high volume applications.
Found ways to reduce deployment costs by improving performance during the development process for a wide variety of applications on Solaris, Linux, AIX and HP/UX
Rapidly tested various hardware and software options to optimize application performance and minimize deployment cost.
Rapidly fixed production problems for a wide variety of high volume real-time applications running worldwide.
Performance testing and capacity planning for networks of Red Hat Linux HP machines using ActiveMQ in varying configurations to transfer high volumes of messages rapidly across multinational network. Determined performance requirements, wrote tests in Java using agile development, planned project using Mingle, diagnosed bottlenecks using nmon and visualvm. Identified bugs in leveldb, ActiveMQ and the application.
Capacity planning and performance testing for a real time telephony application running on a distributed network across the US. IBM hardware with AIX operating system. Application was written with agile development in Java with Oracle TimesTen database. Planned and executed performance tests and diagnosed problems using topas, JProfiler and network sniffers. Conduted wide area network simulations with Shunra and identified bugs in application and third party software.
Capacity planning and performance testing for worldwide network of real time systems supporting telephony operations using IBM hardware with AIX, Oracle and TimesTen database. Accurately estimated hardware required for customer RFP's. Optimize application design for minimal deployment cost and best possible performance. Stress testing. Rapid troubleshooting of network, hardware and software problems in both development and production. Wrote performance requirements and performance validation test plans in accordance with ISO 9000 standards. Executed tests and debug problems using Quantify, Purify, topas, network sniffers, Oracle awr reports.
Capacity planning and performance testing for international deployment of a data warehouse application using Sun hardware, Oracle database and Solaris operating system. Developed performance requirements, wrote and executed performance validation plan in accordance with ISO 9000 standards. Diagnosed problems using Oracle awr reports. Extensive SQL tuning.
Capacity planning, performance testing and troubleshooting for real time, high volume telephony applications using HP/UX, Solaris, AIX and Oracle.Tools used include JProfiler, Purify, Quantify, Glance, Oracle awr reports ,Silk Performer, Loadrunner.
Capacity planning, performance testing and troubleshooting for real time telephony application written in C+ on HP/UX using Purify, Quantify, Oracle awr reports and network sniffers.
IBM mainframe capacity planning and performance for development data center supporting 6,000 programmers using Quantify, SAS, MICS, MXG, SMF, RMF and database analysis tools. Reduced number machines required with extensive virtual memory, database, operating system and applicatino tuning. Evaluated new hardware and software for cost effectiveness. Rapidly fixed production problems.
MVS MXG SAS DB2 IMS Capacity Planning for 5 data centers using IBM mainframes for billing systems for approximately 100M customers. Project leader of 6 people using SAS, MICS, MXG, SMF, RMF. Performed extensive tuning of databases and applications.to reduce production costs.
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