Apple

Sr Software Engineer, Infrastructure Services (SONiC)

Apple$150K — $180K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of software development experience in C/C++, Python, Go, or similar languages
  • Strong understanding of computer networking fundamentals
  • Experience with network operating systems, switching software, or routing platforms
  • Knowledge of SONiC architecture and key components
  • Familiarity with SAI and its application in programming switching ASICs
  • Strong Linux systems knowledge, including networking
  • Excellent debugging skills and root cause analysis capabilities

Responsibilities

  • Develop and enhance networking software on the SONiC Network Operating System
  • Troubleshoot complex issues across the entire networking stack
  • Work with routing and switching protocols, SAI, and hardware components
  • Build reliable networking platforms for large-scale environments
  • Analyze logs and packet captures to identify networking issues
  • Collaborate on network infrastructure software development
  • Employ debugging techniques to isolate problems across software/hardware layers

Benefits

  • Opportunity to work with cutting-edge networking technologies
  • Engagement in large-scale network environments
  • Collaboration with experts in open-source networking
  • Hands-on experience with industry-leading software architecture
  • Potential for contribution to innovative networking solutions
Full Job Description
Description

We're seeking a Software Engineer with a strong background in networking and systems software to develop, enhance, and troubleshoot networking software on the SONiC (Software for Open Networking in the Cloud) Network Operating System.

The ideal candidate understands networks end-to-end - from the protocol and control-plane layers down to the switching ASIC and packet-forwarding pipeline. This role requires hands-on experience with network operating systems, a solid grasp of SAI (Switch Abstraction Interface) and network ASICs, and excellent debugging and problem-solving skills.

You'll work across the full networking stack - SONiC applications, routing and switching protocols, SAI, ASIC SDK interfaces, Linux networking, and hardware - to build reliable networking platforms and diagnose complex issues in large-scale network environments.

Minimum Qualifications

Strong software development experience in C/C++, Python, Go, or similar systems programming languages.

Strong understanding of computer networking fundamentals.

Experience developing or working with network operating systems, switching software, routing platforms, or network infrastructure software.

Working knowledge of SONiC architecture and its major components.

Working knowledge of SAI and how SONiC uses it to program switching ASICs.

Working knowledge of network switching ASIC architecture.

Strong Linux systems knowledge, including Linux networking.

Excellent debugging and troubleshooting skills, with the ability to systematically isolate problems across multiple software and hardware layers.

Ability to analyze logs, packet captures, database state, protocol state, and ASIC programming state to identify root causes of complex networking issues.

Strong software engineering fundamentals, including data structures, concurrency, APIs, testing, source control, and software design.

Preferred Qualifications

10+ years of software development experience.

Hands-on experience developing or contributing to SONiC.

Experience developing software using SAI APIs.

Experience with one or more switching ASIC families or SDKs from vendors such as Broadcom or NVIDIA.

Experience troubleshooting discrepancies between expected SONiC/SAI behavior and actual ASIC forwarding behavior.

Understanding of ASIC resource limitations, including TCAM, route tables, ECMP groups, next-hop resources, counters, and buffers.

Knowledge of VXLAN/EVPN, data-center networking, leaf-spine architectures, and large-scale network fabrics.

Experience with network validation, traffic generators, packet analysis, or network automation.

Experience developing software for high-scale or highly available networking systems.

Experience contributing to open-source networking projects.

About Apple

Apple is a corporation that designs, manufactures, and markets mobile communication and media devices, personal computers, portable digital music players, and sells a variety of related software, services, peripherals, networking solutions, and third-party digital content and applications. Apple provides many products and services, including iPhone; iPad; iPod; Mac; Apple TV; a portfolio of consumer and professional software applications; the iOS and OS X operating systems; iCloud; and accessories, service, and support offerings. It sells its products worldwide through its retail stores, online stores, direct sales force and third-party cellular network carriers, wholesalers, retailers, and value-added resellers to the consumer and also sells third-party iPhone, iPad, Mac and iPod compatible products, including application software and accessories through its online and retail stores. Introduced in 1984, the Macintosh was the first widely sold personal computer with a graphical user interface (GUI). That feature and others such as an improved floppy drive design and a low-cost hard drive that made data retrieval faster helped Apple cultivate a reputation for innovation. Apple was named as the most admired company in the United States in 2008 and in the world from 2008 to 2012 by the Fortune magazine. The company was founded by Steven Paul Jobs, Steve Wozniak, and Ronald Gerald Wayne on April 1, 1976, and is headquartered in Cupertino, California.

Apple Careers

Join Apple, a place where extraordinary people gather to do their best work. Our ever-expanding global team is at the forefront of innovation and leadership in the tech industry. At Apple, we're not just building products—we're crafting the kind of wonder that revolutionizes entire industries. It's the diversity of our people and their ideas that inspires the innovation that runs through everything we do, from amazing technology to industry-leading environmental efforts. Work You’ll Do Embark on a journey with Apple’s market-leading team to help some of the world’s most influential companies navigate their path to digital mastery with cutting-edge technology and services. Transform industries and touch lives with your unique ideas at Apple. Here, you’ll lead through a unique position at the intersection of technology, creativity, and robust industry expertise. Collaborate with a global team of professionals who are at the top of their game in technology and design. Apple isn’t just a company, it’s a community of innovators and passionate thinkers. Introducing the Apple Innovation and Leadership Initiative We are building a market-leading team to drive our efforts in delivering groundbreaking solutions and services. At Apple, job opportunities are abundant, offering you the chance to explore diverse roles from engineering to marketing, all designed to empower your career growth. Do Innovative Work Join the largest group of creative and technical experts in the world—professionals dedicated to redefining what’s possible through technology and innovation. Deliver targeted solutions through a depth and breadth of expertise that’s unmatched, driving forward our commitment to excellence and leadership in every project we undertake. Be Part of a Great Team Engage in a wide range of projects utilizing Apple’s technology and resources. Harness the unparalleled capabilities, global scale, and joint solution development that only Apple can offer. Future-Proof Your Career Advance your career with limitless opportunities at Apple. Go as far as your ambition takes you with unmatched training, development, and certification support. Explore Discover how Apple is leading the way in tech innovation: [With iOS] Businesses can streamline operations and enhance customer interactions... READ MORE Smart home technology integration that sets the standard for convenience and security... READ MORE The Apple Experience Our combined service capabilities, global scale, and joint solution development help clients overcome challenges and lead transformation in their industries. Clients worldwide look to Apple for new strategies and solutions that drive growth and innovation in the digital era. Stay Connected Join Our Team Search open positions that match your skills and interests. We look for passionate, curious, creative, and solution-driven team players. Whether you’re seeking a professional role, an internship, or a leadership position, Apple offers a variety of employment opportunities. SEARCH APPLE JOBS Keep Up to Date Stay ahead with career tips, insider perspectives, and industry-leading insights you can put to use today—all from the people who work here. READ CAREERS BLOG Job Alert Emails Personalize your subscription to receive job alerts, latest news, and insider tips tailored to your preferences. See what exciting and rewarding opportunities await at Apple, a company committed to diversity, innovation, and leadership. Explore job opportunities, employment benefits, and the culture of growth and innovation at Apple. Prepare your resume, hone your interview skills, and ready yourself for a career at one of the most prestigious companies in the world. Join us in pushing the boundaries of what is possible.
Learn more about Apple
Size
154,000 employees
Market Cap
$2,074.3 billion
Industry
Net Income
$63.9 billion
Founded
1976
5 Year Trend
+11.5%
Revenue
$294.1 billion
NASDAQ

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