Barcelona, Barcelona, Spain Machine Learning and AI
Apple's Security Engineering & Architecture organization is responsible for the security of all Apple products. Passionate about safeguarding users, we believe that the best defense requires a great offense. When it comes to securing more than a billion devices running the world's most sophisticated operating systems, that means finding vulnerabilities first. Our mission is to discover, understand, and exploit vulnerabilities across all layers of Apple’s platforms, and we believe that ML techniques significantly enhance our ability to do so. We are seeking an Applied Machine Learning Engineer who will help us invent and deliver these new methods and techniques. This position provides rare exposure to a full‑stack view of security along with direct access to expert knowledge, unique datasets, and cross‑domain experience. Your contributions will materially raise the security of products used by billions and strengthen Apple’s ability to defend against adversaries.



Can you make a difference on this scale? Join our extraordinary group of security researchers, tool developers, and machine learning experts, and help protect all Apple users.
Description
Minimum Qualifications

Solid understanding of machine learning algorithms (supervised, unsupervised, and reinforcement learning) and evaluation methods
Hands-on experience with agentic frameworks such as LangChain, LlamaIndex, or AutoGen to build multi-step, tool-augmented agent workflows
Familiarity with MLOps practices including model versioning, CI/CD pipelines, and experiment tracking tools such as MLflow or similar
Strong software engineering and programming skills in languages like Python, C, C++, Swift, Objective-C
Collaborative and effective problem-solving and analytical skills

Preferred Qualifications

Experience scaling LLM training and fine-tuning (pretraining, SFT, alignment)
Strong enthusiasm for security, especially offensive security
Familiarity with soft

📌 Applied Machine Learning Engineer (Barcelona)
🏢 Apple
📍 Barcelona