It's a steatoda nobilis, commonly known as a false widow. They can bite (and it certainly may not be a pleasant experience...but then what bites are?), but generally only tend to do as a last resort against being crushed to death when trapped in clothing & the like. A bite may leave the victim feeling mildly unwell for a short time but they are not dangerous. Females tend to be quite docile & mainly hang around their webs.