Sr. GPU Compiler Backend Engineer

As a member of the Apple Silicon GPU Compiler Backend Performance Team, you'll implement improvements to the open-source LLVM mid-level optimizer as well as our LLVM-based machine-dependent code generator for the Apple GPU architecture.

Description

The Apple GPU architecture is part of the silicon that powers macOS, iOS, iPadOS, tvOS, and watchOS devices. The work we do has direct impact on the billions of Apple devices shipped to date. We work with many different organizations within Apple - hardware architecture, silicon engineering, device drivers, application frameworks, and the Xcode developer tools. This kind of collaboration and cross-functional reach allows our team to influence the hardware architecture and software stack. We're part of delivering phenomenal performance, functionality, and robustness for all graphics shaders and compute kernels that run on Apple GPUs.

Our team is focused on improving the end-user experience by maximizing the execution speed of the code generated for Apple GPUs while minimizing energy consumption. We are enabling new GPU architectures, technologies, and applications through innovation in compilers.

Minimum Qualifications

• The ability to communicate clearly and effectively, especially with people less technically proficient in the areas you've gained expertise in
• An inclination toward collaborative approaches to solving complex problems
• Experience writing C++ code in a modern style
• Hands-on experience developing LLVM-based compiler backends (e.g. instruction selection, instruction scheduling, register allocation)
• Experience with instruction selection with either LLVM's SelectionDAG or GlobalISel
• Experience implementing SSA-based optimization passes

Preferred Qualifications

• Experience implementing or improving instruction schedulers and register allocators for CPU or GPU compiler backends
• Knowledge of GPU architectures and how they differ from CPU architectures

Pay & Benefits

• At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $175,800 and $312,200, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation.