9to5Mac says there were Mesa job listings on Apple's site that have been removed. I'm still seeing 3 job listings. Based on the job descriptions it sounds like more than just glass for home buttons.
Manufacturing Design Engineer- Mechanical Enclosures
Job Summary
The Manufacturing Design Engineer is accountable for driving the development of key mechanical manufacturing processes across Apples worldwide supply base. In this highly visible hands-on role as the expert technical member of the Manufacturing Design Team you will have direct frequent communication and collaboration with Apple Industrial Design, Product Design, Manufacturing Design partners and worldwide suppliers.
Key Qualifications
Process Development Focus Areas:
Apple is looking for world class engineers that will provide end to end manufacturing and process solutions for key design features. This includes incorporating all aspects of equipment, consumables, key parameters and process set-up and qualification.
Surface Finishing - Develop new processes are the area of blasting, tumbling, polishing, lapping, anodizing etc.
Glass Processing - Develop new processes for glass scribe/break, CNC grinding, lapping, chemical strengthening, ink decoration, PVD coatings etc.
Automation - Develop new automation across manufacturing. Identify automation opportunities and justify automation projects, identify world-class automation integrators, define automation project scope and deliverables, support the qualification of equipment at suppliers.
CNC machining - Develop all CNC milling and turing processes. Scope appropriate CNC equipment to be used, develop CNC fixtures, implement touch probing, own the reduction of cycle time, development of advanced cutters and coatings, High Speed Machining implementation, support the programming and optimization of all CNC-related activities at contract manufacturers worldwide
Painting - Develop all paint processes to achieve cosmetic and surface durability requirements. Scope and specify paint equipment, environmental clean room requirements, evaluate and select most appropriate paints and painting parameters to ensure quality and yield requirements are met.
Mechanical Supplier Quality Engineer
Job Summary
In this highly visible and highly hands-on role, you will enjoy the key decision making combined with the on-site hands-on problem solving that comes with owning the quality for some of the highest quality and highest visibility products in the world today. You will be responsible for developing and implementing quality tools and systems for cutting edge product designs in a cosmetically demanding environment.
Technical Product Manager
Job Summary
The Technical Product Manager (TPM) is responsible for the managing and guiding of development activities of a highly skilled product development, operations, and quality team within Apple to develop and manufacture mechanical enclosures. The TPM will guide the team to develop processes for building world-class products from existing and new ideas based on business needs. The TPM should possess a blend of business and technical knowledge, have a big-picture vision and the drive to make the vision into reality.