Apple

Apple

Posted via Apple Careers

Systems & Kernel Software Engineer, SEAR

Always Hiring

Posted Aug 4, 2026

Role at a glance

Salary
$150.4K – $277.6K/yr
Location
Cupertino, California, United States
Work arrangement
On-site
Employment
Full-time
Experience
Experience writing low-level software, such as kernels, drivers, firmware, bootloaders, hypervisors, or runtimes.
Education
BS in Computer Science or a related field, or equivalent experience.

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Role Summary

AI-generated

The SPEAR Systems & Kernel team in Apple's Security Engineering & Architecture organization develops security defenses for lower-layer software including bootloaders, drivers, firmware, and kernels. The Systems & Kernel Software Engineer partners with teams across the software stack to design and implement changes that improve the security of Apple devices while balancing performance, memory footprint, compatibility, and reliability.

What You'll Do

  • Design hardening approaches for codebases, including memory safety technologies, mitigations, and broad refactors.
  • Ramp up on unfamiliar codebases and write production-quality low-level code in C, C++, or Swift.
  • Balance security goals with performance, memory footprint, compatibility, and reliability requirements.
  • Test thoroughly, debug carefully, and partner with QA on end-to-end validation.
  • Use modern tooling, including LLMs, while evaluating its output with systems and security expertise.
  • Create documentation and training materials for partner teams.

Generated from the employer's posting. Verify important details before applying.

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Qualifications

BS in Computer Science or a related field, or equivalent experience; working knowledge of C and expertise in one or more systems programming languages (C, C++, Rust, Zig, or Swift); experience writing low-level software; understanding of how low-level code is compiled to machine code and interacts with hardware; experience with, or an interest in, software security; strong written and verbal communication.

Required

  • BS in Computer Science or a related field, or equivalent experience
  • Working knowledge of C
  • Expertise in one or more systems programming languages: C, C++, Rust, Zig, or Swift
  • Experience writing low-level software, such as kernels, drivers, firmware, bootloaders, hypervisors, or runtimes
  • Understanding of how low-level code is compiled to machine code and interacts with hardware
  • Experience with, or an interest in, software security
  • Strong written and verbal communication

Preferred

  • Understanding of the security properties of common systems languages
  • Understanding of common vulnerability exploitation and mitigation techniques
  • Experience designing, implementing, or evaluating software security mitigations
  • Deep expertise in C programming
  • Experience using LLMs to accelerate security engineering
  • Experience with compiler security features, static analysis, or fuzzing
  • Contributions to open-source systems or security projects

Original job description

Content provided by the employer

Summary

The SPEAR Systems & Kernel team in Apple's Security Engineering & Architecture organization is hiring a collaborative systems engineer with a drive to improve the security of end user devices. We take on software engineering projects to make progress on Apple's most pressing security challenges, anywhere in the lower layers of the stack: bootloaders, drivers, firmware, and the kernel.

Our goal is to eliminate whole classes of software vulnerabilities, securing our systems against even the most advanced and well-resourced adversaries. We've done wholesale rewrites of codebases into memory safe languages, deployed static and dynamic analysis to prevent bugs, and undertaken bespoke rearchitecture of critical codebases. We continue to refine our approach to best protect our users against rapidly evolving threats.

Description

As a Systems & Kernel Software Engineer in SPEAR, you will partner with teams across the lower layers of the software stack to design security defenses that meaningfully improve the security of Apple devices. Working in a small team of SPEAR engineers, you will collaborate on a design that upholds a high security standard without compromising on system performance or user experience.

Then, you will go hands-on. You and your team will ramp up on the partner team's codebase and implement the design.

A day on the job might involve:
- Designing the hardening approach for a given codebase, from surgical adoptions of memory safety technologies, to mitigation deployment, to broad refactors that reorient key system components.
- Ramping quickly on unfamiliar codebases and writing production-quality low-level code in C, C++, or Swift.
- Balancing security goals against the realities of working on code that ships to hundreds of millions of devices: performance, memory footprint, compatibility, and reliability.
- Testing thoroughly, debugging carefully, and partnering with QA on end-to-end validation.
- Using modern tooling, including LLMs, where it helps us move faster, while applying the systems and security depth needed to evaluate what those tools produce.
- Creating the documentation and training materials the partner team needs to maintain and build on the changes.

Minimum Qualifications

BS in Computer Science or a related field, or equivalent experience.
Working knowledge of C and expertise in one or more systems programming languages (C, C++, Rust, Zig, or Swift).
Experience writing low-level software, such as kernels, drivers, firmware, bootloaders, hypervisors, or runtimes.
Understanding of how low-level code is compiled to machine code and interacts with hardware.
Experience with, or an interest in, software security.
Strong written and verbal communication.

Preferred Qualifications

Understanding of the security properties of common systems languages.
Understanding of common vulnerability exploitation and mitigation techniques.
Experience designing, implementing, or evaluating software security mitigations.
Deep expertise in C programming.
Experience using LLMs to accelerate security engineering.
Experience with compiler security features, static analysis, or fuzzing.
Contributions to open-source systems or security projects.

Pay & Benefits — Cupertino, California, United States

At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $150,400 and $277,600, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple’s discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple’s Employee Stock Purchase Plan. You’ll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses — including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

Application Deadline

Apple accepts applications to this posting on an ongoing basis.

Apple

About the company

Apple

Large Enterprise

Apple Inc. is a global technology company known for its innovative products and services, including the iPhone, iPad, Mac computers, and Apple Watch. Founded in 1976, Apple has continuously pushed the boundaries of design and functionality, earning a reputation for high-quality consumer electronics and software solutions like iOS and macOS. With a strong commitment to user experience and privacy, Apple also leads in digital services, offering platforms such as the App Store, Apple Music, and iCloud. The company's focus on sustainability and corporate responsibility further enhances its standing as a leader in the technology sector.