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Machine Learning Tools Engineer, Global Siri

Barcelona💼 Full-time🗓 2026-04-09 → 2026-08-06

Core

Design, build, and deploy machine learning systems to advance 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

Scalable LLM-powered solutions, machine learning lifecycle management systems, and data generation pipelines for Siri

Domain

Consumer AI / Natural Language Processing / Mobile Assistant

Deliverable

production ML models

Required skills

Software engineering, system design, large-scale LLM development, NLU, model training, evaluation, data generation methods, academic/research advancement in ML

Preferred skills

Data science and analytics, A/B testing, iOS development ecosystem (Swift, Objective-C, CoreML, SiriKit), localization, internationalization, machine translation

Technologies

LLMs, NLU, CoreML, SiriKit, Swift, Objective-C

Responsibilities

Design and build extraordinary machine learning systems, improve accuracy and capability of Global Siri models, collaborate across teams to serve user needs

Seniority

Senior, hands-on IC

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