A well-known Bay Area enterprise company we are friendly with is seeking some Cassandra developers. The target scale is hundreds of machines per cluster, with a focus on various online data mining and analytics tasks of a sensitive nature. You would work on developing and operationalizing Cassandra alongside the research team building the algorithms. Security clearance not necessary, and telecommuting is a possibility. The company is open-source friendly, and will be able to contribute changes back to the core.
Contact me for more details. -ryan