As mentioned back in this post, I helped to build Job Bounty Hunter. So, I was quite pleased to see one of my own architecture diagrams appear on this Amazon Web Services blog post.
So, since that particular diagram is now publicly available, I might as well present it here - I did create it, after all ;)
As you can see, we use a number of Amazon Web Services - including EC2, S3, and CloudFront.
I quite like the overall architecture - some might think it is a little bit of overkill, and indeed it is at the moment, but my boss and I both believe strongly in architecting applications for scalability from day one :)