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 Software Engineer - OS Networking - Cupertino, California, United States

Job information
Posted by: Apple 
Hiring entity type: Retail 
Work authorization: Not Specified for United States
Position type: Direct Hire, Full-Time 
Compensation: ******
Benefits: See below
Relocation: Not specified 
Position functions: Computers - Programming Languages
Computers - Platforms
Computers - Networks
Computers - Software Engineer
Travel: Unspecified 
Accept candidates: from anywhere 
Languages: English - Fluent
Minimum education: See below 
Minimum years experience: See below 
Resumes accepted in: English
Cover letter: No cover letter requested
Job code: 200256976 / Latpro-3840174 
Date posted: Nov-11-2021
State, Zip: California, 95014


Software Engineer - OS Networking

Santa Clara Valley (Cupertino) , California , United States

Software and Services


Posted: Aug 5, 2021

Weekly Hours: 40

Role Number: 200256976

Apple is looking for a talented and energetic software engineer for the Core Networking team to participate in the architecture and development of the next generation networking technologies. The team is responsible for designing, enhancing and maintaining the core networking stack OS components used in the majority of Apple's platforms, including but not limited to macOS, iOS, iPadOS, watchOS and tvOS. Specific areas of responsibility include: networking APIs and protocols, as well as performance optimizations of various networking layers. The ideal candidate should possess an excellent conceptual understanding of networking stack internals and their interactions within the Operating System, both towards applications, as well as network device drivers. Good working knowledge of TCP/IP and system level software design and implementation experience is also essential. The position will require the right candidate to determine the appropriate compromise between several competing factors such as; performance (throughput and latency), energy efficiency, ease of use and security.

Key Qualifications

  • Commercial networking software and/or hardware products development experience
  • Strong software design and development skills, including C or C++ programming language experience
  • Up-to-date and thorough knowledge of:
  • Link-layer technologies (e.g. Ethernet, Wi-Fi, Cellular, etc.)
  • TCP/IP protocol suite
  • Networking stack implementations (e.g. BSD, Linux/Android, Solaris, etc.)
  • System level and network troubleshooting skills
  • Excellent communication and interpersonal skills


The candidate needs to be able to work in a fast paced environment, operate gracefully under stress, handle multiple assignments in parallel, and be self driven to be effective in an environment with little overhead. The candidate also needs to show initiative, be able to take ownership of a problem area, and demonstrate an ability to understand the role of the group's technology in the larger context of the product and network environment. The position has cross-functional aspects and the candidate will need to show excellent interpersonal and communication skills.

Education & Experience

BS in Computer Science, Electrical Engineering or equivalent networking software development experience.

Additional Requirements

  • Preferred Experience:
  • * System level development experience on iOS or macOS
  • * Experience with user-space networking stack technologies and frameworks (e.g. netmap, DPDK, VPP, etc.)
  • * IP routing and NAT/Firewall
  • * Software switches
  • * API development experience
  • * Hardware offload experience
  • * Wireless networking technologies and standards (Wi-Fi and cellular)
  • * Network debugging tools (e.g. packet sniffers, protocol analyzers)
  • * System profiling and performance optimization experience


See job description


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