Senior AI Software Engineer, On-Device Siri

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

Job summary

Apple Inc. in San Francisco is seeking seasoned AI Software Engineers to advance on-device app intelligence for Siri. You will design interfaces, model app capabilities, and build on-device software to power Siri's end-to-end experiences across apps.

You will collaborate with app teams, explore new ML approaches, and run scalable experiments to demonstrate performance and reliability while defending architectural choices with working code and measurable results.

Qualifications

• Bachelor's degree or foreign equivalent in Computer Science, Electrical Engineering, Applied Mathematics, or related field.
• 6+ years experience in developing ML/AI driven software.
• Proficiency in Python, Swift, Objective-C, or C++.
• Experience developing and evaluating ML Models and Algorithms using Python, PyTorch, SQL, and Tableau.
• Fluency with agentic coding tools like Claude Code for accelerating engineering productivity.
• Exceptional problem-solving and ability to drive alignment across teams on shared API surfaces.

Responsibilities

• Lead the design and development of software features that enable end to end app experiences in Siri
• Develop ML models and AI driven algorithms for app intelligence to improve Siri capabilities
• Run experiments at scale on complex datasets to evaluate models and algorithms
• Research and evaluate new ML/AI technologies and design performant on-device and cloud modeling approaches
• Implement code that is well designed, easy to debug, and highly performant
• Diagnose failures in end-to-end app experiences and drive measurable quality improvements
• Contribute to the evaluation and telemetry loop to prove changes improved user outcomes
• Help inform architectural choices to support ML/AI features in the software stack
• Proactively optimize code for on-device latency, memory, and power budgets
• Leverage agentic coding to enhance engineering productivity and code quality

Skills

Python

Swift

Objective-C

C++

Education

Bachelor's degree in CS/EE/Applied Math or related field

Tools

Python

PyTorch

SQL

Tableau

Job description

San Francisco Bay Area, California, United States Machine Learning and AI

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 join our team and be part of this mission.

Description

In this role, you will be at the forefront of developing software on device that enables Siri to deliver on app Intelligence throughout the OS. We bring app intelligence to Siri by working directly with app teams to understand what their apps can do, modeling those capabilities so an assistant can use them well, and building the on-device software that makes the resulting experiences reliable and fast. We partner closely with the team that builds Siri's planning and execution engine, and we work the app side of that partnership: what apps can offer, how they express it, and whether the resulting experience is good enough to trust.This is early work. How apps best expose themselves to an assistant is 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

• Lead the design and development of software features that enable end to end app experiences in Siri
• Develop ML models and AI driven algorithms and approaches for app intelligence to make apps better and more capable with Siri
• Run experiments at scale on complex datasets and scenarios and evaluating models and algorithms for app intelligence and Siri integration
• Researching and evaluating new technologies in ML and AI and help design modeling approaches that work in a performant manner both on-device and cloud
• Implement code that is well designed, easy to debug, and highly performant
• Diagnose failures in end-to-end app experiences, and work with the Siri team to turn them into measurable quality improvements
• Contribute to the shared evaluation and telemetry loop that proves whether a change improved user outcomes
• Help inform architectural choices to be made for the software stack to support ML and AI features and help integrate these features in the software stack
• Proactively look for areas of code to further optimize for performance, and hold on-device latency, memory, and power budgets
• Leverage agentic coding to enhance engineering productivity, code quality, and efficiency at scale

Minimum Qualifications

• Bachelor's degree or foreign equivalent in Computer Science, EE, Applied Mathematics, or related field with 6+ years experience in developing ML / AI driven software.
• Proficiency in one or more of the following programming languages: Python, Swift, Objective-C, or C++
• Experience developing software prototypes and features driven by Large Language Models and designing tool and function-calling interfaces, constructing context, and validating model output
• Experience developing and evaluating ML Models and Algorithms using technologies such as a Python, PyTorch, SQL, and visualizing results via dashboards built using tools like Tableau
• Fluency with agentic coding tools like Claude Code for accelerating engineering productivity, with good judgment about where to apply them and how to verify what they produce
• Exceptional problem-solving skills, and the ability to drive alignment across teams on shared API surfaces

Preferred Qualifications

• Experience designing and developing systems that are efficient in resource constrained environments — latency, memory, and power budgets on device
• Experience building key software components and APIs used cross functionally across different applications and platforms, including versioning and compatibility of interfaces that shipped clients depend on
• Proven ability to excel in a fast-paced development team

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