Conshohocken, PA - Monetate
We're a SaaS provider of testing, targeting, and personalization tools to internet marketers.  We're currently hiring Javascript engineers for front-end development and backend engineers (we use Python) - and we have fun web and data problems at scale.
We're having fun and growing fast.
3 people on our team have found us through here and we always look forward to talking to more fellow HNers.
Feel free to email me any questions - tjanofsky monetate com