At Apple, we work every day to create products that enrich people's lives. Our Advertising Platforms group makes it possible for people around the world to easily access informative and imaginative content on their devices while helping publishers and developers promote and monetize their work. Today, our technology and services power advertising in Search Ads in the App Store and Apple News. Our platforms are highly-performant, deployed at scale, and setting new standards for enabling effective advertising while protecting user privacy. Ads ML Experimentation team is looking for a Senior Software Engineer to build the next generation of software platform and systems to advance experimentation that connect millions of global users to content from publishers and developers. Your work will drive the experimentation framework development of machine learned algorithm at scale. You will build sophisticated systems essential in the end-end development of predictive algorithms. You will design and engineer tools for managing AB test experiments, for automating distributed model training pipelines, for performing exploratory analysis, for computing data signals in feature stores and for serving real-time prediction that react to real-time signals, while preserving privacy of our customers. Description Partner with business leaders and stakeholders to design, implement and evolve the features of a multivariate experimentation platform. Promote experimentation best practices across the organization. Execute on the experimentation roadmap and future integrations with data-driven prioritization. Exercise strong judgment and make thoughtful decisions with ambiguous situations. Striking the right balance between short-term wins vs. long-term success based on various constraints. You will join and contribute to a culture that emphasizes observability and understandability, reliability, resiliency, simplicity, reusability, extensibility, scalability, velocity and productivity. We are one team, nurturing each other's growth and supporting each other in delivering for our customers and Apple. Minimum Qualifications * Degree in Computer Science, Statistics, Applied Math or related field. * 5+ years of industry experience designing, building, maintaining, and extending web-scale production systems. * Extraordinary software engineering skills designing and building complex large-scale and distributed software systems in cloud computing environments like AWS * Strong experience in machine learning methodology, experimentation frameworks and A/B testing * Fluency in programming languages like Java, Scala, Python and SQL * Experience with event stream processing (ESP) technologies like Spark Streaming, Kafka, Flink or equivalent * Experience with backend object stores, automated data pipelines, cloud-native data storage and processing frameworks * Experience with Spark, Hadoop, HIVE, Kafka, Cassandra or other distributed systems * Hands on experience with top agile methodologies: test driven development and CI/CD environments * Familiarity with data-oriented workflow orchestration frameworks like Airflow, Kubeflow, etc. * Familiarity with statistics and ability to use data analysis techniques to understand data quality, profile system loads, relationships between business metrics, and technical performance * Excellent communication, social and presentation skills * Skilled at operating in a cross-functional organization * Ability to condense complex concepts and analysis into clear and concise takeaways that drive action * Curious business attitude with a proven ability to seek projects with a sense of ownership Preferred Qualifications * Prior experience in advertising industry is a plus Pay & Benefits * At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $175,800 and $264,200, and your base pay will depend on your skills, qualifications, experience, and location. Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation.