Darwin Runtime Engineer, Core OS

Apple Inc

Quick summary

Work type
On-site
Location
Cupertino, CA
Salary
$126,800–$220,900 / yr
Posted
56 days ago
Nearby
99+ roles within 25 mi

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Salary context

Competitive pay

How this pay compares to similar roles

Similar $171k
This role $174k
$115k most similar roles pay here $232k

This role pays more than 54% of similar roles. Most pay $136,725–$205,325 — the shaded band above. At the midpoint, this role pays about $174k versus about $171k for comparable roles.

Based on 240 similar postings.

Employer

About Apple Inc

Apple Inc. is a multinational technology company known for designing and manufacturing consumer electronics, software, and online services, including the iPhone, Mac, iPad, and App Store. Industry: Consumer Electronics & Software

Apple Inc currently has 1723 open roles on FindRole.

Listed pay typically runs $162,500–$272,100 across 1398 roles with salary data.

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At a glance

TL;DR · Darwin Runtime Engineer, Core OS

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As a Software Engineer on the Darwin Runtime team in Core OS at Apple, you will work on developing low-level system technologies that form the foundation of Apple’s operating systems. Your responsibilities include designing and implementing new features for runtime technologies like Grand Central Dispatch (GCD), secure inter-process communication (XPC), threading library (pthread), and memory allocator (malloc). You’ll also develop high-performance runtime libraries, optimize code generation and performance, and collaborate with kernel engineers, security architects, and framework developers. The team focuses on operating systems, programming language design, systems security, and high-performance computing, requiring fluency in C, experience with UNIX-like systems, and a strong understanding of threading, synchronization primitives, inter-process communication, scheduling, and virtual memory. Preferred skills include compiler design, capability-based security models, Swift or Objective-C knowledge, and proficiency with lldb or gdb.

Skills

C GCD XPC pthread malloc Swift Objective-C UNIX LLVM Clang lldb gdb CI/CD Git Mercurial JIRA Confluence

What you'll do

  • Design and implement new features for Darwin Runtime technologies like GCD, XPC, pthread, and malloc.
  • Develop high-performance runtime libraries for secure communication and memory management.
  • Optimize code generation and runtime performance to meet strict low-level system requirements.
  • Participate in all phases of the software development cycle from design through debugging.
  • Diagnose and resolve issues across different layers of the stack independently.

What we're looking for

  • Fluent in C programming language for low-level system development.
  • Strong understanding of UNIX-like systems and operating system fundamentals.
  • Experience designing and implementing threading, synchronization primitives, IPC.
  • Ability to work collaboratively on cross-functional teams for system architecture.
  • Knowledge of compiler design and secure inter-process communication mechanisms.
  • Skill in developing high-performance runtime libraries and optimizing memory usage.

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