Applied ML Engineer ,Localization
Software Engineering, Data Science · Full-time
Barcelona, Spain
Posted on Nov 14, 2026
Summary
The Software Localisation team powers the tooling, features and processes used to create an exceptional localised experience for Apple’s international customers. We are responsible for localisation workflows, framework-level localisation support, localised OS features, and internal localisation tools used to create high quality experience across all of Apple’s software products around the world.
We are looking for a creative, motivated, and passionate engineer who will work cross-functionally and globally to deliver the next generation of ML tooling and Apple Intelligence features for international locales.
Description
As an Applied ML Engineer in the Software Localisation team, you will join an extraordinary team of passionate engineers to design, implement and qualify localisation features, processes and tooling across a wide variety of Apple’s products. We are looking for an exceptional candidate to help architect the future of localising ML models. Your role is to ensure
Apple can deliver world-class software products to millions of users around the world. Your duties include:
Leading the exploration and application of Large Language Models (LLMs) for performing data synthesis and translation tasks
Translating the latest research into high-quality systems and models that can be practically applied to further improve model localisation
Actively engaging in all aspects of model development, from ideation, training, experimentation, evaluation to deployment.
Collaborating with translation, localisation quality, project management and engineering teams to develop and implement solutions
Developing and maintaining features and tools to help facilitate the data and model localisation process
Minimum Qualifications
At Apple, we believe accessibility is a fundamental human right. You’ll find that idea reflected in everything here — in our culture, our benefits and our digital tools. By welcoming as many perspectives as possible, we help you build a career where you feel like you belong.
Learn about accessibility in Apple’s workplace
Role Number: 200694717-0215
The Software Localisation team powers the tooling, features and processes used to create an exceptional localised experience for Apple’s international customers. We are responsible for localisation workflows, framework-level localisation support, localised OS features, and internal localisation tools used to create high quality experience across all of Apple’s software products around the world.
We are looking for a creative, motivated, and passionate engineer who will work cross-functionally and globally to deliver the next generation of ML tooling and Apple Intelligence features for international locales.
Description
As an Applied ML Engineer in the Software Localisation team, you will join an extraordinary team of passionate engineers to design, implement and qualify localisation features, processes and tooling across a wide variety of Apple’s products. We are looking for an exceptional candidate to help architect the future of localising ML models. Your role is to ensure
Apple can deliver world-class software products to millions of users around the world. Your duties include:
Leading the exploration and application of Large Language Models (LLMs) for performing data synthesis and translation tasks
Translating the latest research into high-quality systems and models that can be practically applied to further improve model localisation
Actively engaging in all aspects of model development, from ideation, training, experimentation, evaluation to deployment.
Collaborating with translation, localisation quality, project management and engineering teams to develop and implement solutions
Developing and maintaining features and tools to help facilitate the data and model localisation process
Minimum Qualifications
- Experience with Machine Learning (ML), with a particular emphasis on Large Language Models (LLMs), Natural Language Processing (NLP) and building agentic workflows.
- Strong programming skills in Python, Swift, C or C++ or other language
- BS, MS or PhD in Computer Science, Computational Linguistics, Artificial Intelligence, or Machine Learning
- Proven ability to comprehend, interpret, and apply cutting-edge research into consumer-oriented products
- Comprehensive knowledge and hands-on experience with fine-tuning approaches, prompt optimization and training models
- Experience adapting pre-trained LLMs for downstream tasks
- Proficiency using open-source ML toolkits and frameworks
- Experience in software localisation / internationalisation
- Fluency in English and native-level proficiency in an additional language (reading, writing, and speaking).
At Apple, we believe accessibility is a fundamental human right. You’ll find that idea reflected in everything here — in our culture, our benefits and our digital tools. By welcoming as many perspectives as possible, we help you build a career where you feel like you belong.
Learn about accessibility in Apple’s workplace
Role Number: 200694717-0215