The Pirie Street office in Adelaide is absolutely gorgeous, well-maintained facilities and workspaces. KBR is very flexible with the dress code, they emphasise that they are happy for you to wear whatever is comfortable, providing it is work-appropriate (as in no political messages, sexual content, etc). In saying that, most people still wear smart casual, but it is nice having the option to come in a t-shirt or jumper and not be shunned for it.