The Darwin Runtime team is responsible for building the low-level runtime technologies like Grand Central Dispatch (GCD), secure inter-process communication systems, memory allocator, threading library, and concurrency and synchronization primitives. The team operates at the intersection of operating systems, programming language design, systems security, and high-performance computing. As a Software Engineer on the team, you'll work closely with kernel engineers, security architects, and framework developers to deliver foundational technologies that enable Apple's next-generation computing platforms.The ideal candidate should be self-motivated and effective in operating independently, with a desire to learn and develop technical leadership. Team members are welcome and encouraged to participate in design discussions, code reviews, and development across multiple technologies. Our environment fosters technical innovation, meaningful technology ownership, and a liberating amount of autonomy!

Minimum Qualifications
BS or MS in Computer Science or equivalent degree
0-3+ years of relevant industry experience in low level systems programming
Passion for low-level system technologies
Fluency in the C programming language
Experience with UNIX-like systems
System design and architecture skills
Strong understanding of operating system fundamentals like threading, synchronization primitives, inter-process communication, scheduling, and virtual memory
Excellent collaborative skills, with the ability to work with a team to design system architecture

Preferred Qualifications
Experience with compiler design, including lexical analysis, parsing, semantic analysis, and code generation
Knowledge of capability-based security models, sandboxing, and secure IPC mechanisms
Knowledge of operating system implementation, hardware architecture and assembly programming
Knowledge of Swift or Objective-C
Skilled at interface and/or API design
Experience with lldb or gdb