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Machine Learning Tools Engineer, Global Siri

Barcelona, Spain💼 Full-time🗓 2026-05-13 → 2026-09-28

Core

Design, build, and deploy scalable machine learning systems and tools to enhance the intelligence and capabilities of Apple's Global Siri assistant across all languages and markets.

Role type

Senior IC machine learning tools engineer (LLM & NLP)

Builds

End-to-end ML product engineering, data platforms, and ML modeling systems for Siri

Domain

Consumer AI / Large Language Models / Natural Language Understanding

Deliverable

production ML models

Required skills

LLM/foundation model development, ML lifecycle management, data generation, model training and evaluation, system design, software engineering (Java/C++/Swift/Python), deep learning frameworks (TensorFlow/PyTorch/CoreML)

Preferred skills

iOS ecosystem experience, localization/internationalization, language technologies, data science/analytics, A/B testing

Technologies

TensorFlow, PyTorch, CoreML, SiriKit, Java, C++, Swift, Python, Ruby, bash

Responsibilities

Design and build extraordinary machine learning systems, improve model accuracy and capability, collaborate across teams to ship ML products, dive into latest academic/research advancements in ML and NLP

Seniority

Senior, hands-on IC with leadership potential

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