Machine Learning Engineer, Siri Speech

Join the team redefining what a deeply personal and integrated assistant can be.

As part of the Siri organization, you will help shape one of the worlds most widely used AI assistants, powered by our next-generation of Apple Intelligence, with capabilities like personal context understanding and on-screen awareness, built with privacy from the ground up. Your work will have direct, meaningful impact for users across iOS, iPadOS, macOS, watchOS, tvOS, and visionOS.

This is a rare opportunity to build at the intersection of cutting-edge AI and human-centered design, shipping technology that is centered around users and their needs.

Join the Siri Speech team and play a part in the next revolution in human-computer interaction. You'll help create groundbreaking technology for large-scale systems, spoken language, big data, and artificial intelligence, building production-quality models that power natural voice experiences used by millions. In this role, you will design and develop machine learning models, fine tune deep learning systems for speaker recognition and multimodal understanding, and collaborate across software engineering, data science, and product to integrate solutions into production. We are looking for a talented ML Research Engineer who is excited to work on SiriAI, which is used by millions of users across variety of Apple devices. Our Engineers are creative, inspired, innovative, energetic, self motivated people who love making and shipping products. Are you one of us? You will be responsible for improving multimodal algorithms that decide if a user is interacting with Siri or not. These algorithms include speaker recognition techniques. To succeed in this role, you must be a strong collaborator, and a creative problem solver who thrives in a fast-paced environment, working across teams and organizations.Develop and build multilingual, multimodal LLMs to improve speech and conversational experiences for Apple customers worldwide. Advance the state of the art in multimodal modeling. Design and build robust speech-centric LLM systems that enable next-generation conversational assistant features across Apple platforms. Collaborate closely with cross-functional partners in research, engineering, design, and production to deliver scalable, high-quality ML products. Stay current with emerging research and industry trends, and help define the future direction of AI-powered Siri experiences Experience in developing, training/tuning large generative models or LLMs Experience with machine learning frameworks such as JAX and/or PyTorch Proficient programming skills in Python Strong problem-solving skills and ability to work independently as well as in a team environment. Excellent written and verbal communication skills.M.S. in Electrical Engineering, Computer Science or related fields 1-2+ years experience in Machine Learning Experience in reinforcement learning Experience with Speech LLMs or other Multimodal LLMs Experience with building & deploying AI agents and LLMs Experience with large scale machine learning training/evaluation Data-centric vision and hands-on experience in developing and scaling foundation models