AI Software Engineer, App Intelligence

Apple, Inc.; Cupertino (CA); On-site; USD 185,000 - 325,000; Full time

Benefits offered by this job

Medical and dental coverage

Retirement benefits

Apple stock programs

Tuition reimbursement

Relocation assistance

Job summary

Apple seeks seasoned AI Software Engineers to build the on-device Siri platform that powers apps across iOS, iPadOS, macOS, watchOS, and visionOS. You will design and implement the on-device runtime required for end-to-end Siri experiences, shaping architecture and ensuring fast, reliable performance through collaborating with internal teams and real app partners.

Join a team that tackles ambiguity, defines interfaces, and proves concepts with working software and measurable results, influencing

Qualifications

• BS or MS in Computer Science or equivalent practical experience, with 5+ years developing and shipping production software.
• Strong proficiency in C++, Swift, or Objective-C, with a solid understanding of object-oriented programming and software design principles.
• Strong understanding of OS internals, concurrency, multithreading, and memory management.
• Strong familiarity with Large Language Models (LLMs) and AI assistants, with fluency in agentic coding tools such as Claude Code, and good judgment about where to apply them and how to verify what they produce.
• Experience with system performance analysis and optimization techniques.
• Ability to work independently, solve complex problems, and learn new technologies quickly.
• Excellent communication skills, with experience collaborating across different technical teams and driving alignment on shared API surfaces.

Responsibilities

• Design, develop, and maintain the robust on-device runtime platform that enables end-to-end Siri experiences.
• Implement code that is well-designed, scalable, maintainable, highly testable, easy to debug, and highly performant, ensuring best practices in engineering.
• Contribute to and help shape key architecture decisions that enable the product to scale.
• Debug, profile, and optimize system performance to ensure high-quality, responsive interactions, holding on-device latency, memory, and power budgets.
• Diagnose failures in end-to-end Siri experiences, and turn them into measurable quality and reliability improvements in the platform.
• Contribute to the shared evaluation and telemetry loop that proves whether a platform change improved user outcomes.
• Design and evolve the interfaces between the runtime and the model — tool and function-calling schemas, context construction, and validation of model output — so that what the planner decides is executed reliably.

Skills

C++/Swift/ObjC

LLMs & AI assistants

OS internals

Performance optimization

Independent problem solving

Cross-team communication

Education

BS/MS in Computer Science

Job description

Cupertino, California, United States Software and Services

Do you want to build the layer that lets every app on the device do its best work for the user through Siri? App Intelligence is the on-device system that turns app capabilities into things a user can simply ask for — and makes the assistant reliable enough to be trusted with them.We are engineers, scientists, and problem solvers bringing smarter, faster, and more natural interaction with apps to Siri. We are looking for seasoned AI Software Engineers to build the on-device platform behind it, with direct impact across iOS, iPadOS, macOS, watchOS, and visionOS.

Description

We partner closely with the team that builds Siri's planning and execution engine, and we own the app side of that partnership: what apps can offer, how they express it, and whether the resulting experience is good enough to trust. As a platform engineer, you will build the on-device software this depends on and make the resulting experiences reliable and fast. This is early work. How apps should best expose themselves to an assistant is still an open question — you will help answer it by designing the interfaces, proving them out with real app partners, and iterating as we learn. Expect real ambiguity, and expect to form your own view of the right architecture and defend it with working software and measured results.

Responsibilities

• Design, develop, and maintain the robust on-device runtime platform that enables end-to-end Siri experiences.
• Implement code that is well-designed, scalable, maintainable, highly testable, easy to debug, and highly performant, ensuring best practices in engineering.
• Contribute to and help shape key architecture decisions that enable the product to scale.
• Debug, profile, and optimize system performance to ensure high-quality, responsive interactions, holding on-device latency, memory, and power budgets.
• Diagnose failures in end-to-end Siri experiences, and turn them into measurable quality and reliability improvements in the platform.
• Contribute to the shared evaluation and telemetry loop that proves whether a platform change improved user outcomes.
• Design and evolve the interfaces between the runtime and the model — tool and function-calling schemas, context construction, and validation of model output — so that what the planner decides is executed reliably.

Minimum Qualifications

• * BS or MS in Computer Science or equivalent practical experience, with 5+ years developing and shipping production software.
• * Strong proficiency in C++, Swift, or Objective-C, with a solid understanding of object-oriented programming and software design principles.
• Strong understanding of OS internals, concurrency, multithreading, and memory management.
• Strong familiarity with Large Language Models (LLMs) and AI assistants, with fluency in agentic coding tools such as Claude Code, and good judgment about where to apply them and how to verify what they produce.
• Experience with system performance analysis and optimization techniques.
• Ability to work independently, solve complex problems, and learn new technologies quickly.
• Excellent communication skills, with experience collaborating across different technical teams and driving alignment on shared API surfaces.

Preferred Qualifications

• Proficiency with Swift and Xcode, with experience building applications for Apple platforms.
• Experience designing and developing systems that are efficient in resource-constrained environments — latency, memory, and power budgets on device.
• Experience working on AI software runtimes or agent orchestration frameworks, or on voice assistants / conversational AI systems leveraging LLMs.
• Experience building software features driven by LLMs, including designing tool and function-calling interfaces, constructing context, and validating model output.
• Experience with API design or framework development, including key software components and APIs used cross-functionally across different applications and platforms, and versioning and compatibility of interfaces that shipped clients depend on.
• Experience with evaluation or telemetry infrastructure that measures the end-to-end quality of LLM-driven features (e.g., Python, SQL, dashboards).
• Experience leading the design of complex features or driving architectural decisions across teams (for candidates at the more senior end of the range).

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 $184,700 and $324,800, 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.

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

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

Apple accepts applications to this posting on an ongoing basis.