Bug fixing of MS Excel XLA

We need a developer who is experienced at building add-ins for Microsoft Excel to test & fix bugs in an add-in we currently have. The application is described in full at: [[login to view URL]][1] It works as described 70% of the time, but occasionally hangs, and repeatedly creates multiple MS Excel processes We think it will require around 10 hours over the next 2 weeks. If you wish to see the source code before you apply I can send this to you. Because of the complex skillset required, please only apply if you can demonstrate that you have experience here. Compensation is somewhat dependent on the experience you can demonstrate. We are also looking to add extra features after the bugs are resolved.