Dear,
Here's a SharePoint consultant who has more than 8 years of experience in supporting SharePoint(development, and administration). In fact, I have a very rich experience in SharePoint administration: building farms from scratch, configuring service applications, e.g. Office web apps, Search, UPS, Secure Store, Visio, Excel, BDC, etc.
Moreover, I have experience with other technologies connected to SharePoint e.g. SharePoint designer, InfoPath(design, and development), workflows coding using workflow foundation. Furthermore, I have experience in SharePoint online, and Yammer.
On the other hand, I've worked as a SharePoint developer developing SharePoint custom solutions: farm solutions, sandbox solutions, SharePoint hosted addins, provider hosted addins using C#, .Net, CSOM, JSOM, REST, Javascript, JQuery, CSS, XML, XSLT, VSTA.
It's my pleasure to start working with you in this project. However, I can see in the project title that this is regarding SharePoint online. However, the project description talks about SharePoint server, could you please clarify? Please, give me more details about the Office web app issue you have.
Waiting for your reply.
Best regards,
SharePointer