Language Engineer (Spanish), Global Siri

Experteer Overview Join the Siri Global team to shape the future of Siri for Spanish users.You will bridge ML, data, and software engineering to deliver multilingual, culturally aware experiences at scale.You’ll work with LLMs, GenAI, and speech technologies to improve end-user interactions and personalize responses.This role anchors the Spanish market, leading large-scale ML initiatives and collaborating with cross-functional teams across Apple.You’ll contribute to the foundation of Siri AI for users worldwide.Compensaciones / Beneficios * Lead work streams to design and implement large-scale ML and GenAI solutions for the Spanish market * Architect and deliver end-to-end ML software that enhances user experience * Collaborate with partner teams across Apple to account for international market nuances * Apply LLMs, agentic systems, tool calling, and retrieval-augmented generation in production * Work on speech technologies (ASR, TTS, pronunciation modeling) and multilingual modeling * Prototype, evaluate, and communicate solutions; translate research into scalable products * Contribute to datasets curation, experimentation, and data-driven decision making * Ensure software quality and maintainability within large production codebases Responsabilidades * Hands-on experience with large language models: fine-tuning, prompt/context engineering, evaluation, and inference optimization * Experience with speech technologies (ASR, TTS, pronunciation modeling) * Multilingual/cross-lingual modeling, transfer learning, or low-resource settings * Ability to formulate research problems, design experiments, implement and communicate solutions * Strong product focus and end-user experience orientation * Proficiency in Python, Swift, Objective-C, C++, or C (Apple platforms preferred) * M.S in Computer Science or related field, or equivalent practical experience * Professional fluency in Spanish with deep cultural familiarity * Experience applying ML/NLP techniques to product delivery and data-driven decisions * Strong software design and programming skills across paradigms, including testing and maintainability * Experience working with data at scale, including dataset curation and analysis Requisitos principales *

modeling, transfer learning, or low-resource settings * Ability to formulate research problems, design experiments, implement and communicate solutions * Strong product focus and end-user experience orientation * Proficiency in Python, Swift, Objective-C, C++, or C (Apple platforms preferred) * M.S in Computer Science or related field, or equivalent practical experience * Professional fluency in Spanish with deep cultural familiarity * Experience applying ML/NLP techniques to product delivery and data-driven decisions * Strong software design and programming skills across paradigms, including testing and maintainability * Experience working with data at scale, including dataset curation and analysis Requisitos principales *

Barcelona, España

Experteer Overview Join the Siri Global team to shape the future of Siri for Spanish users. You will bridge ML, data, and software engineering to deliver multilingual, culturally aware experiences at scale. You’ll work with LLMs, GenAI, and speech technologies to improve end-user interactions and personalize responses. This role anchors the Spanish market, leading large-scale ML initiatives and collaborating with cross-functional teams across Apple. You’ll contribute to the foundation of Siri AI for users worldwide.