Job Description

We are looking for an innovative Software Engineer to develop intelligent, on-device experiences that integrate large language models (LLMs) for Apple devices. This role involves designing and deploying systems that enhance user interactions while ensuring privacy and performance.

Requirements

Experience working with on-device LLMs or other on-device ML models (e.g., using Core ML, TensorFlow Lite, or PyTorch Mobile)
Hands-on experience with agentic frameworks or tool-use architectures (e.g., LangChain, custom agents)
Strong skills in Swift (desired) and at least one other object-oriented programming language
Experience with on-device databases (e.g., Core Data, Realm, SQLite)
Experience with multi-platform development or building systems that operate across different operating systems
Knowledge of model quantization, pruning, and other on-device optimization techniques
Experience with distributed systems and client-server communication
A track record of leading complex technical projects from concept to launch
A passion for building innovative user experiences
Exceptional problem-solving and analytical skills
Excellent communication and collaboration skills

Responsibilities

Architect and Develop Agentic Systems: Design and build the core architecture for on-device agents and the tools they will use.
On-Device LLM Integration: Integrate on-device LLMs to run efficiently on iOS devices, managing memory, power consumption, and compute resources.
Hybrid On-Device/PCC Architecture: Engineer a seamless system that can execute agentic workflows and tool calls both on the user's device and on a personal computer.
On-Device Data and Input Integration: Design and build robust integrations with on-device databases and other device inputs.
Tool Building and Management: Create a flexible and scalable tooling framework that allows agents to interact with various applications and data sources.
Performance and Privacy Optimization: Continuously monitor and optimize the performance of the on-device agents.
Technical Leadership: Serve as a technical leader within the team, providing guidance and mentorship to other engineers.
Cross-Functional Collaboration: Partner with product managers, UX designers, and ML researchers to translate product requirements into technical specifications.

Benefits

Employees at Apple are often offered comprehensive benefits that support physical and mental well-being—flexible medical plans, confidential counseling, onsite wellness centers at major campuses, and resources for fitness and daily life. Families typically receive fertility support, paid parental leave with gradual return, caregiving leave, and dependent-care guidance, while financial perks commonly include stock grants (with purchase discounts), 401(k) matching, and income-protection coverage. Employees also see robust time off, Apple University learning and tuition reimbursement, donation matching and paid volunteer hours, and deep product and partner discounts.