Apple

Sr. Linux Engineer - DNS and Global Server Load Balancing, Infrastructure Services

Apple$145K — $175K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of experience in operating Linux systems in production environments.
  • Strong understanding of networking fundamentals and troubleshooting of TCP/UDP issues.
  • Experience with configuration management tools like Salt, Ansible, or Terraform.
  • Familiarity with observability tools such as Prometheus or Grafana.
  • Proficiency in programming languages for automation, like Python or Go.
  • Bachelor's degree in Computer Science or equivalent experience.
  • Willing to participate in a 24x7 on-call rotation.

Responsibilities

  • Operate and extend bare-metal and cloud systems in distributed environments.
  • Define observability, alerting, and service-level objectives.
  • Build automation to reduce operational toil.
  • Plan fleet capacity and manage hardware lifecycles.
  • Mentor junior engineers and collaborate with cross-functional teams.
  • Manage incidents and processes in shared on-call responsibilities.
  • Ensure system reliability for DNS and global server load balancing services.

Benefits

  • Opportunity to work on infrastructure that serves hundreds of millions of people worldwide.
  • Access to a collaborative team focusing on both technical excellence and team dynamics.
  • Involvement in mentoring and leadership opportunities within the engineering team.
  • Work in a dynamic environment with exposure to advanced technologies and scalable systems.
  • Participation in significant projects with a global impact.
Full Job Description
Infrastructure Services is part of IS&T and the foundation of Apple's global network operations - managing data center equipment and systems to deliver compute, storage, and networking services for teams across Apple, including its internal developer community. From individual facilities to a worldwide network, Infrastructure Services ensures the technology underneath everything works without question

Apple's services reach hundreds of millions of people every day, and Edge Services builds and runs the authoritative DNS and global server load balancing infrastructure that sits at the front door of all of them. Every request to an Apple service begins here, in the first few milliseconds where our systems decide how and where to answer. The reliability, correctness, and performance of that front door directly shape the experience people have with Apple, and keeping it fast and dependable at global scale is the work of our team.

We're looking for a thoughtful, experienced engineer to bring technical leadership to this infrastructure. You'll operate and extend bare-metal and cloud systems distributed across dozens of data centers and network points of presence worldwide, build deep traffic and resolution visibility, drive performance and capacity planning, and create the automation that keeps our 24x7 operations calm and reliable. You'll also mentor engineers across the team and partner closely with our software, network, and product engineering groups. We believe great systems are built by great teams and care as much about how we work together as about what we ship. If you're energized by owning the reliability of critical infrastructure at global scale, we'd like to hear from you.

Description

This is a senior individual-contributor role and a technical anchor for the Edge Services DNS and GSLB systems. The essential functions of the job are to operate and extend distributed Linux infrastructure as code across geographically dispersed sites; to define and maintain the observability, alerting, and service-level objectives that keep the systems healthy; to build automation that removes operational toil; to plan fleet capacity and hardware lifecycle across globally distributed sites; and to mentor engineers while partnering across software, network, and product teams. The role includes incident and process management and participation in a shared 24x7 production on-call rotation.

Minimum Qualifications

Demonstrated experience operating Linux systems in production, including software deployment and CI/CD workflows.

Working knowledge of networking fundamentals, with hands-on experience troubleshooting TCP/UDP and common layer 2-3 issues.

Experience with configuration management or infrastructure-as-code tooling (for example, Salt, Ansible, Puppet, or Terraform) and with observability tooling (for example, Prometheus and Grafana, or equivalents).

Proficiency in at least one programming language used for automation and tooling (for example, Python, Go, Rust, or Swift).

Willingness to participate in a shared 24x7 on-call rotation.

Bachelor's degree in Computer Science or a related field, or equivalent practical experience.

Preferred Qualifications

Extensive experience operating large-scale infrastructure across multiple data centers or network points of presence.

Expertise with anycast routing and BGP, and a strong understanding of how DNS, load balancing, and the network layer interact.

Depth in Linux internals, including kernel networking, and in package management and software deployment at fleet scale.

Experience defining service-level objectives and indicators (SLOs/SLIs) and driving reliability programs across distributed systems.

Familiarity with secure-by-default operations, such as DNSSEC key management, change safety, and progressive configuration rollout.

Experience with scale and performance testing, disaster recovery, and capacity planning.

Experience managing hardware lifecycle across edge and regional network environments.

Track record of leading end-to-end projects, defining technical roadmaps, and driving cross-functional alignment on architecture and best practices.

Experience mentoring engineers and leading code reviews.

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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