Job Description

Locations

• New York City, New York, United States 10022

Salary

Skills Required

• machine learningintermediate
• information retrievalintermediate
• large-scale modelingintermediate
• applied MLintermediate
• deep learningintermediate
• retrieval systemsintermediate
• Large Language Models (LLMs)intermediate
• Reinforcement Learningintermediate
• representation learningintermediate

Required Qualifications

• 4+ years of experience applying machine learning and statistical modeling at scale, preferably in ad tech, recommender systems, or web-scale search/retrieval (experience, 4 years)
• Deep experience with neural network architectures (e.g., Transformers, DNNs, RNNs) and training pipelines using TensorFlow, PyTorch (experience)
• Practical understanding of reinforcement learning, explore/exploit strategies, and bandit-based optimization (experience)
• Experience working with high-volume data pipelines, A/B testing infrastructure, and performance measurement at scale (experience)
• Proficient in Python and familiar with SQL, Scala, or Java for production environments (experience)
• Ability to translate abstract ideas into concrete, high-impact solutions (experience)
• Bachelor's, or equivalent experience, in Computer Science, Machine Learning, Artificial Intelligence, Information Retrieval, or a related field. (experience)

Preferred Qualifications

• MS or PhD, or equivalent experience, in Computer Science, Machine Learning, Artificial Intelligence, Information Retrieval, or a related field. (experience)
• Great foundation in information retrieval, including query-document matching, embedding-based ranking, and learning-to-rank algorithms is a plus (experience)

Responsibilities

• We're is looking for a highly skilled and motivated Machine Learning Engineer to join our Predictions group. We build the core machine learning models that power ad predictions and monetization across Apple’s App Store and News platforms. The ideal candidate will bring deep expertise in machine learning, information retrieval, and large-scale modeling, and will thrive in a fast-paced, privacy-first environment.
• You’ll work at the intersection of applied ML, deep learning, and retrieval systems—developing models that predict user interaction, optimize marketplace outcomes, and scale across billions of queries. You'll also explore and operationalize emerging techniques in Large Language Models (LLMs), Reinforcement Learning, and representation learning to advance Apple’s ad prediction systems.
• Design and implement ML models to improve predictions of user interaction, click-through rate (CTR), and conversion rate (CVR)
• Develop and optimize retrieval algorithms, leveraging techniques from classical IR and modern deep learning
• Contribute to core modeling areas such as deep neural networks, contextual bandits, multi-task learning, and LLM-based ranking signals
• Work with large-scale, distributed datasets to identify new signals and improve model accuracy and robustness
• Collaborate with cross-functional teams across engineering, infrastructure, and product to scale models to production
• Participate in designing and running large-scale experiments to validate new model architectures and learning strategies

Tags & Categories