Staff AI Software Engineer, Siri Core Modeling
Apple
Software Engineering, Data Science
Cupertino, CA, USA
Posted on Feb 24, 2026
Do you have a passion for building the software platform on device that enables Siri to deliver intelligent experiences throughout the OS? We are engineers, scientists, and problem solvers working on bringing smarter, faster, and more natural human interaction capabilities to Siri. We are looking for a seasoned AI Software Engineer to join our team and be part of this mission.
In this role, you will be at the forefront of developing the software platform on device that enables Siri to deliver on Apple Intelligence throughout the OS.
- Lead the design and development of software features that enable end to end Siri experiences
- Implement code that is well designed, easy to debug, and highly performant
- Proactively look for areas of code to further optimize for performance
- Develop software that interfaces with LLMs and on-device intelligence to enhance Siri capabilities
- Leverage LLMs and AI assistants to enhance engineering productivity, code quality, and efficiency at scale
- 8+ years experience in developing and shipping production software
- Strong proficiency in C++, Objective-C, or Swift
- Strong understanding of software design principles, OS internals, concurrency and multi-threading, and memory management
- Strong familiarity with Large Language Models (LLMs) and AI Assistants
- Exceptional problem-solving and interpersonal skills
- Proven ability to excel in a fast-paced development team
- Experience designing and developing systems for resource constrained environments
- Experience working on AI software runtimes
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.