Darwin Runtime Engineer - Low-Level OS

Apple; Little Rock (AR); On-site; USD 57,308,160 - 85,962,240; Full time

Benefits offered by this job

Health and dental insurance

Retirement benefits

Employee stock purchase plan

Tuition reimbursement

Job summary

Apple is seeking a Software Engineer in Little Rock to contribute to the Darwin Runtime team, developing low-level machine technologies and core OS foundations. You will work on GCD, XPC, pthread, and malloc, helping shape the stack from kernel upwards.

The role emphasizes independent work, research, and collaboration in design discussions and code reviews. The ideal candidate will have a BS/MS in CS or equivalent, strong knowledge of OS fundamentals, and experience with threading,

Qualifications

• Knowledge of operating system implementation, hardware architecture and assembly programming.
• Familiar with debugging tools such as LLDB or GDB.
• Experience with open source technologies and development communities (e.g., Darwin, FreeBSD, Linux).

Responsibilities

• Design and implement new capabilities and APIs for Darwin Runtime technologies like GCD, XPC, pthread, and malloc.
• Analyze Apple's operating systems to understand the software structure and apply that knowledge to make deep changes across the stack.
• Architect high-safety environments to improve user security and privacy.
• Participate in all stages of the software development cycle: problem definition, design, implementation, testing and debugging.

Skills

Low-level device technology

English fluency

UNIX-like systems

Device design & architecture

Threading & synchronization

Collaborative architecture discussions

Education

BS/MS in computer science or equivalent

Tools

lldb

gdb

Job description

Apple is seeking a Software Engineer in Little Rock to contribute to the Darwin Runtime team, developing low-level machine technologies and core OS foundations. You will work on GCD, XPC, pthread, and malloc, helping shape the stack from kernel upwards.

The role emphasizes independent work, research, and collaboration in design discussions and code reviews. The ideal candidate will have a BS/MS in CS or equivalent, strong knowledge of OS fundamentals, and experience with threading,