Apple has posted up a job listing for a Plastics Design Engineer, and that has, of course, sparked questions about whether or not Apple is planning to produce a budget iPhone using a plastic case. The job listing is looking for a Manufacturing Design Engineer with a focus in Advanced Plastic Tooling and Process.
Identify, develop and launch new tooling and process capabilities in support of new Apple product developments. Areas of focus will be "non-traditional" Apple plastic processing such as thermoforming, foam molding, blow molding, etc., and their application to new Apple products. The successful candidate will have demonstrated history of bringing new process and tooling technologies through a full development cycle and launch into high volume production.
Of course, an engineer hired at this late date would be unlikely to be working on a device rumored to launch later this year, though they could be working on future designs. Most of Apple's products have utilized aluminum, though plastic is still used in keyboards, Apple TV, Airport Extreme, and other accessories.
If you happen to be a Manufacturing Design Engineer, you can find the job listing on Apple's website.