Ask HN: How to get a job as a website optimizer (A/B tester / developer)?

Hey HN,

So I'm a current Stanford student in the HCI CS track looking for work as a freelance "optimizer". Aka someone who helps website owners design and implement A/B testing to help improve revenue / user experience. In addition to the HCI courses I also have prior experience implementing A/B testing through the internship I worked last summer.

That being said there doesn't seem to be many job postings for something like this. The closest thing would probably be interaction designer but that's not quite right either.

Any ideas?