Jobs in the United States

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Added 1 min ago
SO
Senior Solutions Engineer (SASE) - TRANSPARENCY POSTING
State of Colorado
CO
- $110,000 to $125,000 USD / year
The Senior Solutions Engineer (SASE) is a senior technical accessibility leader who provides subject matter expertise and technical guidance for the design, development, testing,…
Added 1 min ago
Software Engineer II, Fintech
Twitch
San Francisco, CA
Twitch's Enterprise Platform & Technology (EPT) organization is looking for a Software Development Engineer II to build agentic AI systems on AWS that power Finance and enterprise functions…
Added 4 mins ago
Mid-level Data Engineer
Amentum
Springfield, VA
As a Mid-Level Data Engineer, you will support an exciting National Security mission to position NGA to be the enterprise and community GEOINT data provider, improving the way analysts,…
Added 4 mins ago
Sr. Data Engineer
Amentum
Springfield, VA
As a Senior Data Engineer, you will support an exciting National Security mission to position NGA to be the enterprise and community GEOINT data provider, improving the way analysts,…
Added 5 mins ago
Software Development Engineer - Developer Platform
Workday, Inc.
CO
The Developer Platform team is building the foundation for Workday's open developer ecosystem. We design and deliver the platform capabilities, APIs, SDKs, and developer-facing services…
Added 5 mins ago
Software Development Engineer - US Federal
Workday Government, LLC
United States
Collaborate with Product Managers and QA Engineers on functional design and analysis of requirements
Added 6 mins ago
Digital Engineer
MANTECH
Remote, United States
MANTECH’s Space Division seeks a Digital Engineer to support the United States Space Force (USSF), Space Systems Command (SSC) in executing the National Security Space Launch (NSSL)…
Added 6 mins ago
Solution Architect, Global Supply Chain
Roche
Indianapolis, IN
Architectural Blueprinting: Design and govern the end-to-end technical architecture for warehouse operations, integrating ERP, WMS, and automated data monitoring tools.
Added 9 mins ago
Pattern Maker
The Normal Brand
St. Louis, MO
…fit, grading, and manufacturing. This person will translate design concepts into production-ready patterns while driving consistency, quality, and technical excellence throughout the…
Added 9 mins ago
Darwin Runtime Engineer, Core OS
Apple
Cupertino, CA
…technologies like Grand Central Dispatch (GCD), secure inter-process communication systems, memory allocator, threading library, and concurrency and synchronization primitives. The team…
Added 9 mins ago
Information Systems Security Manager / Specialist
Node.Digital
Arlington, VA
Must have an active Top Secret Clearance · - Must have an active TS/SCI clearance
Added 9 mins ago
Intelligent Automation/AI-ML Engineer
Node.Digital
Remote, United States
The Intelligent Automation / AI-ML Engineer is the architect and guardian of intelligent automation solutions that incorporate AI/ML technologies, built on open-source AI models and the…
Added 9 mins ago
Intelligent Automation/AI-ML Engineer (Full Stack Engineer)
Node.Digital
Remote, United States
The Intelligent Application / AI-ML Engineer is the architect and guardian of intelligent application solutions that incorporate AI/ML technologies using tools such as open source AI…
Added 9 mins ago
Senior Data Engineer
Node.Digital
Remote, United States
Must have an Public Trust Clearance
Added 9 mins ago
Data Engineer
Node.Digital
Remote, United States
Node is currently seeking a motivated, career and customer-oriented Senior Data Engineer /Data Architect to begin an exciting and challenging career with our large Enterprise Application…
Added 10 mins ago
Controls Engineer (HE)- Dublin, OH
Military Spouse Jobs & VetJobs
United States
…power and energy efficient technologies. We specialize in the design, procurement, manufacturing, installation, startup, testing, and commissioning of critical power and energy management…
Added 22 mins ago
Staff Software Engineer
DQQ Cohesity Inc.
Santa Clara, CA
We’ve been named a Leader by multiple analyst firms and have been globally recognized for Innovation, Product Strength, and Simplicity in Design.
Added 24 mins ago
RU
Sr. Data Engineer (Python, Pyspark, AWS)
Randstad USA
Charlotte, NC
- $60 to $65 USD / hour
We are seeking a highly skilled Senior Data Engineer to join an innovative technology-driven team. This is an exceptional opportunity to enhance your career within the Data and Analytics…
Added 28 mins ago
ASIC Digital Design Engineer-Principal-18710
Synopsys
Austin, TX
…innovate AI-powered products. We deliver industry-leading silicon design, IP, simulation and analysis solutions, and design services. We partner closely with our customers across a wide…
Added 28 mins ago
ASIC Design Engineer, Architect-18711
Synopsys
Austin, TX
…innovate AI-powered products. We deliver industry-leading silicon design, IP, simulation and analysis solutions, and design services. We partner closely with our customers across a wide…
Added 28 mins ago
Sales Account Management (Ansys), Senior Staff
Synopsys
Irvine, CA
…innovate AI-powered products. We deliver industry-leading silicon design, IP, simulation and analysis solutions, and design services. We partner closely with our customers across a wide…
Added 30 mins ago
AC
Senior Azure Cloud Engineer
Aon Corporation
Virtual, IL · Virtual, VA · Virtual, NC · Virtual, TX · Virtual, IN · Virtual, NJ
- $135,000 to $150,000 USD / year
…succeed. What the day will look like The Senior Azure Cloud Engineer will be primarily accountable for the design and architecture of Aon’s public-cloud infrastructure services, with a main…
Added 33 mins ago
Information Systems Security Engineer
The Aerospace Corporation
Colorado Springs, CO
…environment Cybersecurity. As an Information Systems Security Engineer(ISSE) (Information Systems Security Engineer Staff IV), you will be responsible for engineering and maintaining cyber…
Added 33 mins ago
Senior Project Engineer
DPR Construction
San Diego, CA · San Diego
Reviews moderately complex technical aspects of construction projects, ensuring adherence to design specifications and quality benchmarks, while maintaining consistent field presence to…
Added 41 mins ago
Enterprise - Senior Software Engineer - Java
Erias Ventures, LLC
Annapolis Junction, MD
We are seeking a Software Engineer who develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development,…

Darwin Runtime Engineer, Core OS

Cupertino, CA, United States

The base pay range for this role is between $129,300 and $225,300, and your base pay will depend on your skills, qualifications, experience, and location.

Apply on jobs.apple.com About employer

Applications open in a new tab.

Job details

Pay: The base pay range for this role is between $129,300 and $225,300, and your base pay will depend on your skills, qualifications, experience, and location.
Experience: 0-3+ years of relevant industry experience in low level systems programming
Posting language: English
Posted: Nov 10, 2026

Original job description

Summary The people here at Apple don’t just build products, we build the kind of wonder that revolutionise entire industries. Imagine what you could do here! Do you have a passion for understanding how each line of code affects all the others? In the Core Operating Systems group ensuring the OS is inseparable from each device’s identity as a whole. That’s because this group is committed to building fully integrated operating systems that combine hardware, software, and apps into a single Apple experience. Your dedication to cross-disciplinary collaboration will help develop groundbreaking technologies, such as iOS, macOS, watchOS, and tvOS. By crafting these distinct, complete user experiences, you’ll continue to uphold and advance the excellence people expect from Apple devices! The Darwin Runtime team in Core OS is looking for enthusiastic engineers interested in developing low-level system technologies for Apple’s operating systems.

Description The Darwin Runtime team is responsible for building the low-level runtime technologies like Grand Central Dispatch (GCD), secure inter-process communication systems, memory allocator, threading library, and concurrency and synchronization primitives. The team operates at the intersection of operating systems, programming language design, systems security, and high-performance computing. As a Software Engineer on the team, you'll work closely with kernel engineers, security architects, and framework developers to deliver foundational technologies that enable Apple's next-generation computing platforms.The ideal candidate should be self-motivated and effective in operating independently, with a desire to learn and develop technical leadership. Team members are welcome and encouraged to participate in design discussions, code reviews, and development across multiple technologies. Our environment fosters technical innovation, meaningful technology ownership, and a liberating amount of autonomy.

Responsibilities

You will be responsible for working on a range of technologies that form the foundation of Apple’s operating systems. The work would include responsibilities such as: Design and implement new features and APIs for Darwin Runtime technologies like GCD, XPC, pthread, and malloc Design and implement IDL compiler frontend and backend systems, including lexical analysis, parsing, semantic analysis, and code generation for both C and Swift targets Develop and maintain high-performance runtime libraries that handle secure communication, memory management, and component lifecycle across different execution environments Optimize code generation, runtime performance, and memory usage to meet strict performance requirements for low-level systems

An engineer in the Secure Runtime team would regularly:

Participate in all phases of software development cycle: from problem definition and design, through implementation, testing, and debugging Diagnose and resolve issues across different layers of the stack Work with cross functional teams to enable developer and product requirements

Minimum Qualifications BS or MS in Computer Science or equivalent degree 0-3+ years of relevant industry experience in low level systems programming Passion for low-level system technologies Fluency in the C programming language Experience with UNIX-like systems System design and architecture skills Strong understanding of operating system fundamentals like threading, synchronization primitives, inter-process communication, scheduling, and virtual memory Excellent collaborative skills, with the ability to work with a team to design system architecture

Preferred Qualifications Experience with compiler design, including lexical analysis, parsing, semantic analysis, and code generation Knowledge of capability-based security models, sandboxing, and secure IPC mechanisms Knowledge of operating system implementation, hardware architecture and assembly programming Knowledge of Swift or Objective-C Skilled at interface and/or API design Experience with lldb or gdb

Pay & Benefits 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 $129,300 and $225,300, 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.

EEO Statement Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant

Accessibility At Apple, we believe accessibility is a fundamental human right. You’ll find that idea reflected in everything here - in our culture, our benefits and our digital tools. By welcoming as many perspectives as possible, we help you build a career where you feel like you belong.

Learn about accessibility in Apple’s workplace

Learn about reasonable accommodations for job applicants

Application Deadline Apple accepts applications to this posting on an ongoing basis.

Apply on jobs.apple.com About employer

More about this job

Skills

Oracle Darwin
Apple macOS
Communication skills
Leadership
IDL
C
Swift
Debugging
Computer science
UNIX
Scheduling
Assembly
Objective C
API development

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Work requirements

Jobs in the United States