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Database Design

$40/hr Starting at $25

Lead architect for CMG (Portfolio Sample Link 2)and designed and developed the latest incarnation of their payroll system, which pays 60% of the people in the UK. The system is a distributed system with it's core running under MS SQL Server/VB.NET. The system includes: * a Web Component with implementations using SOAP and ASPx.NET (IIS)/PHP (Apache) * Office integration (Excel/Word/Outlook/Access) For VirginCars I was a consultant providing Troubleshooting and then QA (Portfolio Sample Link 3)on a system developed in ColdFusion/VB/MS SQL Server. I was brought in to troubleshoot their application a few days before the system was to go live and spent 3 days (20 hours a day) to fix bottlenecks and performance problems. The system would only support 3 concurrent users and had transaction times in excess of 90 seconds before I arrived. After analysis and on the spot fixes were applied the system supported >9000 concurrent users and transaction times were less than 0.25 seconds.

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$40/hr Ongoing

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Lead architect for CMG (Portfolio Sample Link 2)and designed and developed the latest incarnation of their payroll system, which pays 60% of the people in the UK. The system is a distributed system with it's core running under MS SQL Server/VB.NET. The system includes: * a Web Component with implementations using SOAP and ASPx.NET (IIS)/PHP (Apache) * Office integration (Excel/Word/Outlook/Access) For VirginCars I was a consultant providing Troubleshooting and then QA (Portfolio Sample Link 3)on a system developed in ColdFusion/VB/MS SQL Server. I was brought in to troubleshoot their application a few days before the system was to go live and spent 3 days (20 hours a day) to fix bottlenecks and performance problems. The system would only support 3 concurrent users and had transaction times in excess of 90 seconds before I arrived. After analysis and on the spot fixes were applied the system supported >9000 concurrent users and transaction times were less than 0.25 seconds.

Skills & Expertise

AccessAmazonAnalyticsApacheApplication DesignASPASP.NETColdFusionDesigneBay Store ManagementEcommerceExcelIisInvestment BankingMicrosoft SQL ServerMsOutlookPayrollPHPQaSecuritySoapSQLTroubleshooting

2 Reviews

  • Brandon_Tanner

    Brandon_Tanner says,

    This was a simple educational project where David simply described in writing the main differences between several popular programming languages. Obviously David knows what he is talking about - he did a very good job!

    for Need overview of programming languages on Apr 04, 2007

  • joshgerlick

    joshgerlick says,

    David was a fantastic contractor who not only completed the job within the timeframe, but outlined a set of milestones so that we had an expectation at every step of the project. He's a pro, and we hope to maintain an ongoing relationship with him!

    for Dedicated Web Server Update/Maintenance on Apr 03, 2007